Patent Description:
Kettlebells are used to perform various types of exercises, such as deadlift, hang clean, lunges, push press, rows, snatch, and squat, among others. Due to the number of exercises that may be performed with kettlebells, users often need many kettlebells with different weights to perform an exercise routine. However, obtaining an arrangement of kettlebells can be costly, and storing the arrangement of kettlebells can require a vast amount of space.

In response to at least these issues, adjustable kettlebells have been designed that allow a user to selectively adjust the weight of a kettlebell prior to exercising. For example, Taiwan patent publication number <CIT> discloses an adjustable weight kettlebell. Different arrangements of weights typically are attached to the kettlebell depending on the desired total weight of the kettlebell. However, in some circumstances, the weights may become detached from the kettlebell during exercise and cause injury to the user.

Hence, a substantial need exists for an improved adjustable weight kettlebell. <CIT> describes a kettlebell with adjustable weight. <CIT> describes a combined exercise apparatus. <CIT> describes a separable weight adjustable medicine ball. <CIT> describes a multi-function fitness apparatus.

According to an aspect of the disclosure, there is provided an adjustable weight kettlebell as defined in claim <NUM>. Optional features are described in the dependent claims.

A kettlebell system is described although does not fall within the scope of the claims. The kettlebell system may include an adjustable weight kettlebell and a base configured to support the kettlebell. The kettlebell may include a lock mechanism, which is configured to prevent rotation of the weight selector when the kettlebell is off the base. The kettlebell may be configured to automatically unlock the weight selector for adjustment upon placement of the kettlebell on the base. The kettlebell may automatically lock for adjustment upon removal of the kettlebell from the base. The automatic locking and unlocking may be achieved using one or more movable components, such as one or more plungers, operatively arranged to transmit an actuation force from the base to the kettlebell.

A method of adjusting the weight of a kettlebell is described, although this does not fall within the scope of the claims. The method may include rotating a rod, coupling one or more weights to a body of the kettlebell via rotation of the rod, and automatically locking and unlocking a lock mechanism responsive to removal of the kettlebell from the base and placement of the kettlebell on the base, respectively.

This summary of the disclosure is given to aid understanding. Each of the various aspects and features of the disclosure may advantageously be used separately in some instances, or in combination with other aspects and features of the disclosure in other instances. Accordingly, while the disclosure is presented in terms of examples, individual aspects of any example can be claimed separately or in combination with aspects and features of that example or any other example.

This summary is neither intended nor should it be construed as being representative of the full extent and scope of the present disclosure. The present disclosure is set forth in various levels of detail in this application and no limitation as to the scope of the claimed subject matter is intended by either the inclusion or non-inclusion of elements, components, or the like in this summary.

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate examples of the disclosure and, together with the general description given above and the detailed description given below, serve to explain the principles of these examples.

In certain instances, details unnecessary for understanding the disclosure or rendering other details difficult to perceive may have been omitted. In the appended drawings, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a letter that distinguishes among the similar components. The claimed subject matter is not necessarily limited to the particular examples or arrangements illustrated herein.

Various embodiments of the present disclosure are directed to an adjustable weight kettlebell. The kettlebell may include one or more safety features to ensure the one or more weights of the kettlebell do not become detached from the kettlebell during exercise. In various embodiments, the kettlebell may include a selector rod that selectively couples individual weights to the kettlebell depending on the rotational position of the rod relative to the weights. To ensure the individual weights are properly coupled to the kettlebell, the rod may selectively engage a base upon which the kettlebell is supported. When a desired amount of the weight is properly coupled to the kettlebell, the kettlebell may be removed from the base, and the rod may be locked in its rotational position to ensure the rod does not rotate relative to the weights during exercise.

<FIG> and <FIG> are perspective views of a kettlebell system <NUM> including an adjustable weight kettlebell <NUM> and a base <NUM> in accordance with various embodiments of the present disclosure. The base <NUM> may be positioned on, and in various embodiments secured to, a support structure, such as a floor, a stand, or other structure. When not in use, the kettlebell <NUM> may be positioned on the base <NUM>. As illustrated in <FIG> and <FIG>, the kettlebell <NUM> may be supported by the base <NUM> such that the kettlebell <NUM> is oriented in an upright position with a grip or handle <NUM> of the kettlebell <NUM> directed upward to facilitate grasping by a user.

With continued reference to <FIG> and <FIG>, the kettlebell <NUM> may include a cap <NUM> configured to be manipulated by a user to set the amount of weight of the kettlebell <NUM>. For example, the cap <NUM> may be rotatably coupled to a body <NUM> of the kettlebell <NUM>. As illustrated in <FIG> and <FIG>, the cap <NUM> may be located on top of the body <NUM>. By rotating the cap <NUM> relative to the body <NUM>, the user may adjust the amount of weight attached to the body <NUM> of the kettlebell <NUM>. The kettlebell <NUM> may include an indicator, such as arrow <NUM> provided on the cap <NUM> and markings <NUM>, such as weight amounts (see <FIG>), provided on the body <NUM>, to facilitate the user in selecting a desired amount of weight. By virtue of the cap <NUM> being movably coupled to the body <NUM>, the user may adjust the weight of the kettlebell <NUM> by aligning the arrow <NUM> with a marking <NUM> indicating the desired amount of weight, after which the user may lift the kettlebell <NUM> from the base <NUM> and begin exercising. The kettlebell <NUM> may be configured such that, when the arrow <NUM> is not aligned with any of the individual markings <NUM>, the kettlebell <NUM> is not removable or separable from the base <NUM>, e.g., due to a safety feature of the kettlebell system <NUM>, as discussed below in more detail.

<FIG> and <FIG> are exploded views of the kettlebell system <NUM> in accordance with various embodiments of the present disclosure. The kettlebell system <NUM> may include one or more removable weights. In the example illustrated in <FIG> and <FIG>, the kettlebell <NUM> is configured to removably couple to or receive any number of a plurality of weights <NUM>. In the illustrated example, the kettlebell <NUM> is configured to receive a first weight <NUM>-<NUM>, a second weight <NUM>-<NUM>, a third weight <NUM>-<NUM>, a fourth weight <NUM>-<NUM>, and a fifth weight <NUM>-<NUM>. However, the kettlebell <NUM> may be configured to receive fewer or greater number of weights to provide a weight adjustable kettlebell with different characteristics, such as to vary the total weight and increments between weight settings of the kettlebell.

Referring to <FIG>, the body <NUM> of the kettlebell <NUM> may define an internal cavity <NUM> configured to house or receive the weights <NUM>, such that the weights <NUM> coupled to the body <NUM> are positioned in the cavity <NUM> during exercise. When received in the cavity <NUM>, the weights <NUM> may be non-rotatable relative to the body <NUM>. For example, as illustrated in <FIG>, the weights <NUM> may have a non-circular shape (e.g., triangular, rectangular, pentagonal, or other suitable regular or irregular shape) that may correspond to the shape of the cavity <NUM> such that the walls <NUM> of the body <NUM> defining the cavity <NUM> inhibit the weights <NUM> from rotating relative to the body <NUM>. In various embodiments, the weights <NUM> may have a generally circular shape, but the weights <NUM> may be keyed to the body <NUM> during insertion of the weights <NUM> into the cavity <NUM>. For example, the weights <NUM> and the body <NUM> may include corresponding keying structures (such as one or more corresponding grooves and ribs) that inhibit rotation of the weights <NUM> relative to the body <NUM> when the weights <NUM> are positioned in the cavity <NUM>.

Referring to <FIG> and <FIG>, the kettlebell <NUM> may include a weight selector assembly <NUM> configured to selectively couple one or more of the weights <NUM> to the body <NUM>. The weight selector assembly <NUM> may include a selector rod <NUM> coupled to the body <NUM>. For example, the rod <NUM> may be rotatably coupled to the body <NUM> such that the rod <NUM> is rotatable relative to the body <NUM>. In various embodiments, the rod <NUM> is non-rotatably coupled to the cap <NUM> such that rotation of the cap <NUM> causes rotation of the rod <NUM>.

The rod <NUM> may be operable to selectively couple weights <NUM> to the body <NUM> of the kettlebell <NUM>. For example, the rod <NUM> may be rotatable relative to weights <NUM> positioned in the cavity <NUM> to couple one or more of the weights <NUM> to the body <NUM>. The rod <NUM> may be positioned at least partially in the internal cavity <NUM> of the body <NUM> and to extend through apertures <NUM> formed in the weights <NUM>. Engagement members, such as pins <NUM>, may be coupled to the rod <NUM> for connecting the weights <NUM> to the rod <NUM>. The pins <NUM> may be spaced apart from one another along a length of the rod <NUM> and may be oriented cross-wise or transverse (e.g., perpendicular) to the rod <NUM>. A separate pin <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> may be provided for each weight <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, respectively. A first pin <NUM>-<NUM> may be configured to selectively engage the first weight <NUM>-<NUM>, a second pin <NUM>-<NUM> may be configured to selectively engage the second weight <NUM>-<NUM>, a third pin <NUM>-<NUM> may be configured to selectively engage the third weight <NUM>-<NUM>, a fourth pin <NUM>-<NUM> may be configured to selectively engage the fourth weight <NUM>-<NUM>, and a fifth pin <NUM>-<NUM> may be configured to selectively engage the fifth weight <NUM>-<NUM> depending on the rotational position of the pins <NUM> relative to the weights <NUM>.

The weights <NUM> may be configured to selectively allow passage of the pins <NUM> through the weights <NUM> depending on the rotational position of the pins <NUM> relative to the weights <NUM>. As illustrated in <FIG>, <FIG>, and <FIG>, each weight <NUM> may include a passageway <NUM> configured to allow passage of one or more of the pins <NUM>. For example, the first weight <NUM>-<NUM> may include a first passageway <NUM>-<NUM>, the second weight <NUM>-<NUM> may include a second passageway <NUM>-<NUM>, the third weight <NUM>-<NUM> may include a third passageway <NUM>-<NUM>, the fourth weight <NUM>-<NUM> may include a fourth passageway <NUM>-<NUM>, and the fifth weight <NUM>-<NUM> may include a fifth passageway <NUM>-<NUM>.

The passageways <NUM> may provide selective passage of one or more of the pins <NUM> during removal of the kettlebell <NUM> from the base <NUM> depending on the rotational position of the rod <NUM> relative to the weights <NUM>. For example, in one rotational position of the rod <NUM>, the passageways <NUM> may allow passage of the pins <NUM> through the weights <NUM>, thereby not coupling any of the weights <NUM> to the body <NUM> of the kettlebell <NUM>. In another rotational position of the rod <NUM>, the first pin <NUM>-<NUM> may engage the first weight <NUM>-<NUM>, but the passageways <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> of the remaining weights <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> may allow passage of the remaining pins <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, thereby coupling only the first weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>. In another rotational position of the rod <NUM>, the first pin <NUM>-<NUM> may engage the first weight <NUM>-<NUM> and the second pin <NUM>-<NUM> may engage the second weight <NUM>-<NUM>, but the passageways <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> of the remaining weights <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> may allow passage of the remaining pins <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, thereby coupling only the first weight <NUM>-<NUM> and the second weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>. In another rotational position of the rod <NUM>, the first pin <NUM>-<NUM> may engage the first weight <NUM>-<NUM>, the second pin <NUM>-<NUM> may engage the second weight <NUM>-<NUM>, and the third pin <NUM>-<NUM> may engage the third weight <NUM>-<NUM> but the passageways <NUM>-<NUM>, <NUM>-<NUM> of the remaining weights <NUM>-<NUM>, <NUM>-<NUM> may allow passage of the remaining pins <NUM>-<NUM>, <NUM>-<NUM>, thereby coupling only the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, and the third weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>. In another rotational position of the rod <NUM>, the first pin <NUM>-<NUM> may engage the first weight <NUM>-<NUM>, the second pin <NUM>-<NUM> may engage the second weight <NUM>-<NUM>, the third pin <NUM>-<NUM> may engage the third weight <NUM>-<NUM>, and the fourth pin <NUM>-<NUM> may engage the fourth weight <NUM>-<NUM>, but the fifth passageway <NUM>-<NUM> of the fifth weight <NUM>-<NUM> may allow passage of the fifth pin <NUM>-<NUM>, thereby coupling only the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, the third weight <NUM>-<NUM>, and the fourth weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>. In another rotational position of the rod <NUM>, the first pin <NUM>-<NUM> may engage the first weight <NUM>-<NUM>, the second pin <NUM>-<NUM> may engage the second weight <NUM>-<NUM>, the third pin <NUM>-<NUM> may engage the third weight <NUM>-<NUM>, the fourth pin <NUM>-<NUM> may engage the fourth weight <NUM>-<NUM>, and the fifth pin <NUM>-<NUM> may engage the fifth weight <NUM>-<NUM>, thereby coupling the weights <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>.

Referring to <FIG>, <FIG>, and <FIG>, the passageways <NUM> may be differently sized to provide selective passage of one or more of the pins <NUM> during removal of the kettlebell <NUM> from the base <NUM> depending on the rotational position of the rod <NUM> relative to the weights <NUM>. For example, the first passageway <NUM>-<NUM> may be the narrowest passageway and may be sized to allow passage of the pins <NUM> in one rotational position of the rod <NUM> relative to the weights <NUM>. The second passageway <NUM>-<NUM> may be wider than the first passageway <NUM>-<NUM> but narrower than the other passageways <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, and may be sized to allow passage of the second pin <NUM>-<NUM>, the third pin <NUM>-<NUM>, the fourth pin <NUM>-<NUM>, and the fifth pin <NUM>-<NUM> in two rotational positions of the rod <NUM> relative to the weights <NUM>. The third passageway <NUM>-<NUM> may be wider than the first passageway <NUM>-<NUM> and the second passageway <NUM>-<NUM>, but narrower than the other passageways <NUM>-<NUM>, <NUM>-<NUM>, and may be sized to allow passage of the third pin <NUM>-<NUM>, the fourth pin <NUM>-<NUM>, and the fifth pin <NUM>-<NUM> in three rotational positions of the rod <NUM> relative to the weights <NUM>. The fourth passageway <NUM>-<NUM> may be wider than the first passageway <NUM>-<NUM>, the second passageway <NUM>-<NUM>, and the third passageway <NUM>-<NUM>, but narrower than the fifth passageway <NUM>-<NUM>, and may be sized to allow passage of the fourth pin <NUM>-<NUM> and the fifth pin <NUM>-<NUM> in four rotational positions of the rod <NUM> relative to the weights <NUM>. The fifth passageway <NUM>-<NUM> may be the widest passageway and may be sized to allow passage of the fifth pin <NUM>-<NUM> in five rotational positions of the rod <NUM> relative to the weights <NUM>. Accordingly, based at least in part on the geometry of the passageways <NUM>, no weights <NUM> may be coupled to the body <NUM> of the kettlebell <NUM> in a first rotational position of the rod <NUM>; the first weight <NUM>-<NUM> may be coupled to the body <NUM> in a second rotational position of the rod <NUM>; the first weight <NUM>-<NUM> and the second weight <NUM>-<NUM> may be coupled to the body <NUM> in a third rotational position of the rod <NUM>; the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, and the third weight <NUM>-<NUM> may be coupled to the body <NUM> in a fourth rotational position of the rod <NUM>; the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, the third weight <NUM>-<NUM>, and the fourth weight <NUM>-<NUM> may be coupled to the body <NUM> in a fifth rotational position of the rod <NUM>; and the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, the third weight <NUM>-<NUM>, the fourth weight <NUM>-<NUM>, and the fifth weight <NUM>-<NUM> may be coupled to the body <NUM> in a sixth rotational position of the rod <NUM>.

<FIG> is a perspective view of the body <NUM> of the kettlebell <NUM> exploded from a stack of the weights <NUM> supported by the base <NUM> in accordance with various embodiments of the present disclosure. As illustrated in <FIG>, the apertures <NUM> may be centrally located in weights <NUM> and may be arranged along a longitudinal centerline of the kettlebell system <NUM>. Similarly, the rod <NUM> may be arranged along a longitudinal centerline of the kettlebell <NUM>, such that the rod <NUM> may extend through the apertures <NUM> when the body <NUM> of the kettlebell <NUM> is placed over the stack of weights <NUM> (see <FIG>). The passageways <NUM> may extend radially outward from the apertures <NUM> in the respective weights <NUM> to permit passage of the pins <NUM> protruding laterally from the rod <NUM>.

<FIG> is a top plan view of the kettlebell <NUM> in accordance with various embodiments of the present disclosure. As the cap <NUM> is rotated relative to the body <NUM>, different arrangements of the weights <NUM> (see <FIG>) may be coupled to the body <NUM> via the rod <NUM>. For example, in <FIG>, the kettlebell <NUM> provides six different weight settings: a first weight setting <NUM>-<NUM> (e.g., <NUM> pounds), a second weight setting <NUM>-<NUM> (e.g., <NUM> pounds), a third weight setting <NUM>-<NUM> (e.g., <NUM> pounds), a fourth weight setting <NUM>-<NUM> (e.g., <NUM> pounds), a fifth weight setting <NUM>-<NUM> (e.g., <NUM> pounds), and a sixth weight setting <NUM>-<NUM> (e.g., <NUM> pounds). The first weight setting <NUM>-<NUM> may correspond to the weight of the kettlebell <NUM> with none of the weights <NUM> coupled to the body <NUM>. The second weight setting <NUM>-<NUM> may correspond to the weight of the kettlebell <NUM> with one of the weights (e.g., the first weight <NUM>-<NUM>) coupled to the body <NUM>. The third weight setting <NUM>-<NUM> may correspond to the weight of the kettlebell <NUM> with two of the weights (e.g., the first weight <NUM>-<NUM> and the second weight <NUM>-<NUM>) coupled to the body <NUM>. The fourth weight setting <NUM>-<NUM> may correspond to the weight of the kettlebell <NUM> with three of the weights (e.g., the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, and the third weight <NUM>-<NUM>) coupled to the body <NUM>. The fifth weight setting <NUM>-<NUM> may correspond to the weight of the kettlebell <NUM> with four of the weights (e.g., the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, the third weight <NUM>-<NUM>, and the fourth weight <NUM>-<NUM>) coupled to the body <NUM>. The sixth weight setting <NUM>-<NUM> may correspond to the weight of the kettlebell <NUM> with five of the weights (e.g., the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, the third weight <NUM>-<NUM>, the fourth weight <NUM>-<NUM>, and the fifth weight <NUM>-<NUM>) coupled to the body <NUM>. The kettlebell <NUM> may include a different number of weight settings and increments depending on, for example, the number of weights <NUM> provided with the kettlebell <NUM> and/or the amount of each weight <NUM>.

To couple the weights <NUM> to the body <NUM>, the cap <NUM> may be rotated relative to the body <NUM> to select a desired amount of weight of the kettlebell <NUM>. The rod <NUM> (see <FIG> and <FIG>) may rotate with the cap <NUM>, thereby causing the pins <NUM> to rotate relative to the weights <NUM> and selectively engage one or more of the weights <NUM> depending on the rotational position of the pins <NUM> relative to the weights <NUM>. The indicator (e.g., arrow <NUM>) may identify the amount of the weight based on the rotational position of the cap <NUM> relative to the body <NUM>.

In <FIG>, the cap <NUM> has been rotated relative to the body <NUM> (see rotation arrow <NUM>) to select the second weight setting <NUM>-<NUM> (e.g., <NUM> pounds) for the kettlebell <NUM>. <FIG> are cross-sectional views of the kettlebell <NUM> taken through weights <NUM>-<NUM> - <NUM>-<NUM>, respectively, for the second weight setting <NUM>-<NUM> selected in <FIG>. As illustrated in <FIG>, in the second weight setting <NUM>-<NUM>, the first cross pin <NUM>-<NUM> is misaligned with the first passageway <NUM>-<NUM> in the first weight <NUM>-<NUM> such that the first cross pin <NUM>-<NUM> is positioned at least partially beneath the first weight <NUM>-<NUM> to couple the first weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>. The position of the first pin <NUM>-<NUM> in the first weight setting <NUM>-<NUM> (aligned with the first passageway <NUM>-<NUM>), the third weight setting <NUM>-<NUM> (misaligned with the first passageway <NUM>-<NUM>), the fourth weight setting <NUM>-<NUM> (misaligned with the first passageway <NUM>-<NUM>), the fifth weight setting <NUM>-<NUM> (misaligned with the first passageway <NUM>-<NUM>), and the sixth weight setting <NUM>-<NUM> (misaligned with the first passageway <NUM>-<NUM>) relative to the first weight <NUM>-<NUM> also are illustrated in <FIG> for reference purposes. The weights <NUM> may define recesses or seats for the cross pins <NUM> to be seated when misaligned with the passageways <NUM> to facilitate retention of the cross pins <NUM> in a given weight setting.

As illustrated in <FIG>, in the second weight setting <NUM>-<NUM>, the second cross pin <NUM>-<NUM> is aligned with the second passageway <NUM>-<NUM> in the second weight <NUM>-<NUM> such that the second cross pin <NUM>-<NUM> passes through the second passageway <NUM>-<NUM> without coupling the second weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>. The position of the second pin <NUM>-<NUM> in the first weight setting <NUM>-<NUM> (aligned with the second passageway <NUM>-<NUM>), the third weight setting <NUM>-<NUM> (misaligned with the second passageway <NUM>-<NUM>), the fourth weight setting <NUM>-<NUM> (misaligned with the second passageway <NUM>-<NUM>), the fifth weight setting <NUM>-<NUM> (misaligned with the second passageway <NUM>-<NUM>), and the sixth weight setting <NUM>-<NUM> (misaligned with the second passageway <NUM>-<NUM>) relative to the second weight <NUM>-<NUM> also are illustrated in <FIG> for reference purposes.

As illustrated in <FIG>, in the second weight setting <NUM>-<NUM>, the third cross pin <NUM>-<NUM> is aligned with the third passageway <NUM>-<NUM> in the third weight <NUM>-<NUM> such that the third cross pin <NUM>-<NUM> passes through the third passageway <NUM>-<NUM> without coupling the third weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>, and also passes through the second passageway <NUM>-<NUM> of the second weight <NUM>-<NUM> (see <FIG>). The position of the third pin <NUM>-<NUM> in the first weight setting <NUM>-<NUM> (aligned with the third passageway <NUM>-<NUM>), the third weight setting <NUM>-<NUM> (aligned with the third passageway <NUM>-<NUM>), the fourth weight setting <NUM>-<NUM> (misaligned with the third passageway <NUM>-<NUM>), the fifth weight setting <NUM>-<NUM> (misaligned with the third passageway <NUM>-<NUM>), and the sixth weight setting <NUM>-<NUM> (misaligned with the third passageway <NUM>-<NUM>) relative to the third weight <NUM>-<NUM> also are illustrated in <FIG> for reference purposes.

As illustrated in <FIG>, in the second weight setting <NUM>-<NUM>, the fourth cross pin <NUM>-<NUM> is aligned with the fourth passageway <NUM>-<NUM> in the fourth weight <NUM>-<NUM> such that the fourth cross pin <NUM>-<NUM> passes through the fourth passageway <NUM>-<NUM> without coupling the fourth weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>, and also passes through the second passageway <NUM>-<NUM> of the second weight <NUM>-<NUM> (see <FIG>) and the third passageway <NUM>-<NUM> of the third weight <NUM>-<NUM> (see <FIG>). The position of the fourth pin <NUM>-<NUM> in the first weight setting <NUM>-<NUM> (aligned with the fourth passageway <NUM>-<NUM>), the third weight setting <NUM>-<NUM> (aligned with the fourth passageway <NUM>-<NUM>), the fourth weight setting <NUM>-<NUM> (aligned with the fourth passageway <NUM>-<NUM>), the fifth weight setting <NUM>-<NUM> (misaligned with the fourth passageway <NUM>-<NUM>), and the sixth weight setting <NUM>-<NUM> (misaligned with the fourth passageway <NUM>-<NUM>) relative to the fourth weight <NUM>-<NUM> also are illustrated in <FIG> for reference purposes.

As illustrated in <FIG>, in the second weight setting <NUM>-<NUM>, the fifth cross pin <NUM>-<NUM> is aligned with the fifth passageway <NUM>-<NUM> in the fifth weight <NUM>-<NUM> such that the fifth cross pin <NUM>-<NUM> passes through the fifth passageway <NUM>-<NUM> without coupling the fifth weight <NUM>-<NUM> to the body <NUM> of the kettlebell <NUM>, and also passes through the second passageway <NUM>-<NUM> of the second weight <NUM>-<NUM> (see <FIG>), the third passageway <NUM>-<NUM> of the third weight <NUM>-<NUM> (see <FIG>), and the fourth passageway <NUM>-<NUM> of the fourth weight <NUM>-<NUM> (see <FIG>). The position of the fifth pin <NUM>-<NUM> in the first weight setting <NUM>-<NUM> (aligned with the fifth passageway <NUM>-<NUM>), the third weight setting <NUM>-<NUM> (aligned with the fifth passageway <NUM>-<NUM>), the fourth weight setting <NUM>-<NUM> (aligned with the fifth passageway <NUM>-<NUM>), the fifth weight setting <NUM>-<NUM> (aligned with the fifth passageway <NUM>-<NUM>), and the sixth weight setting <NUM>-<NUM> (misaligned with the fifth passageway <NUM>-<NUM>) relative to the fifth weight <NUM>-<NUM> also are illustrated in <FIG> for reference purposes.

<FIG> and <FIG> are partial cross-sectional views of the kettlebell system <NUM> with the weight selector assembly <NUM> in an unlocked configuration in accordance with various embodiments of the present disclosure. In the unlocked configuration, the weight selector assembly <NUM> can be manipulated by the user to adjust the amount of weight of the kettlebell <NUM>, such as by selectively coupling one or more of the weights <NUM> to the body <NUM> of the kettlebell <NUM>. As illustrated in <FIG> and <FIG>, in the unlocked configuration, the selector rod <NUM> is displaced downwardly along its longitudinal axis such that the cross pins <NUM> are spaced apart from an underside of the respective weights <NUM>.

<FIG> and <FIG> are partial cross-sectional views of the kettlebell system <NUM> with the weight selector assembly <NUM> in a locked configuration in accordance with various embodiments of the present disclosure. In the locked configuration, the weight selector assembly <NUM> inhibits adjustment of the amount of weight of the kettlebell <NUM>. As illustrated in <FIG> and <FIG>, in the locked configuration, the selector rod <NUM> is displaced upwardly along its longitudinal axis relative to the unlocked configured illustrated in <FIG> and <FIG> such that the cross pins <NUM> engage an underside of the weights <NUM> to secure one or more of the weights <NUM> to the body <NUM> of the kettlebell <NUM> depending on the rotational position of the pins <NUM> relative to the weights <NUM>.

Referring to <FIG> and <FIG>, the weight selector assembly <NUM> may include an antirotation, engagement, or lock member <NUM> non-rotatably coupled to the selector rod <NUM>. The lock member <NUM> may be configured to engage the body <NUM> of the kettlebell <NUM> when the weight selector assembly <NUM> is in the locked configuration (see <FIG> and <FIG>) to restrict rotation of the rod <NUM> relative to the body <NUM>, such as during exercise. Referring to <FIG>, <FIG>, the lock member <NUM> may be positioned in the internal cavity <NUM> of the body <NUM> of the kettlebell <NUM>, and may be positioned above the weights <NUM>.

The lock member <NUM> may include one or more projections (e.g., teeth <NUM>) that engage the body <NUM> to restrict rotation of the rod <NUM> when the weight selector assembly <NUM> is in the locked configuration (see <FIG> and <FIG>). The teeth <NUM> may project upwardly from a base (e.g., a substantially circular plate <NUM>) of the lock member <NUM>. Referring to <FIG> and <FIG>, the rod <NUM> may be coupled to an inner perimeter of the plate <NUM> and the teeth <NUM> may project upwardly from an outer perimeter of the plate <NUM>. The lock member <NUM> and the rod <NUM> may be arranged coaxially about the longitudinal axis of the rod <NUM>.

Referring to <FIG>, <FIG>, the body <NUM> of the kettlebell <NUM> may include a wall <NUM> oriented transverse (e.g., perpendicular) to the selector rod <NUM>. The rod <NUM> may extend through an aperture formed centrally in the wall <NUM> such that the rod <NUM> is slidable along its longitudinal axis relative to the wall <NUM>. Actuator <NUM> and the lock member <NUM> may be positioned on opposite sides of the wall <NUM>. For example, as illustrated in <FIG>, <FIG>, the actuator <NUM> may be positioned along an upper side of the wall <NUM> such that the actuator <NUM> is located exterior of the internal cavity <NUM> and is accessible by a user, and the lock member <NUM> may be positioned along a lower side of the wall <NUM> such that the lock member <NUM> is located in the internal cavity <NUM> of the body <NUM> of the kettlebell <NUM> and concealed from view during use of the kettlebell <NUM>.

With continued reference to <FIG>, <FIG>, the lock member <NUM> may selectively engage the wall <NUM> to restrict rotation of the rod <NUM>. In various embodiments, the wall <NUM> may be castellated and may at least partially protrude into the internal cavity <NUM>. The wall <NUM> may include downwardly-protruding teeth <NUM>, and the teeth <NUM> of the lock member <NUM> may be configured to interdigitate or intermesh with the teeth <NUM> protruding from the wall <NUM> at rotational positions of the rod <NUM> corresponding to different weight selections. For example, when the user selects a weight setting (e.g., one of the weight settings <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> illustrated in <FIG>), the rod <NUM> may be rotationally positioned such that the teeth <NUM> of the lock member <NUM> are rotationally offset from the teeth <NUM> of the wall <NUM> to enable intermeshing of the lock member <NUM> with the castellated wall <NUM>. In the locked configuration of the weight selector assembly <NUM> (see <FIG> and <FIG>), the teeth <NUM> of the lock member <NUM> may be intermeshed with the teeth <NUM> of the wall <NUM> to restrict rotation of the rod <NUM> relative to the body <NUM> and the weights <NUM>. In the unlocked configuration of the weight selector assembly <NUM> (see <FIG> and <FIG>), the teeth <NUM> of the lock member <NUM> may be disengaged from the teeth <NUM> of the wall <NUM> to permit rotation of the rod <NUM> relative to the body <NUM> and the weights <NUM>.

To transition the weight selector assembly <NUM> between the locked configuration and the unlocked configuration, the rod <NUM> may be movable in an axial direction relative to the body <NUM> to selectively engage or disengage the lock member <NUM> with or from, respectively, the body <NUM>. To move the rod <NUM> in an axial direction, the actuator <NUM> may be coupled to the rod <NUM> and may be operable to move the rod <NUM> upwardly and downwardly in the axial direction of the rod <NUM>.

The actuator <NUM> may be movable by a user between a first position in which the actuator <NUM> causes the lock member <NUM> to be engaged with the body <NUM> and a second position in which the actuator <NUM> causes the lock member <NUM> to be disengaged from the body <NUM>. The actuator <NUM> may be configured to retain the rod <NUM>, and thus the lock member <NUM>, in the first position and the second position until the actuator <NUM> is acted upon by the user. In various embodiments, the actuator <NUM> may be a lever <NUM> (see <FIG>) rotatably coupled to an upper end portion of the rod <NUM>, a depressible button <NUM> (see <FIG>) coupled to an upper end portion of the rod <NUM>, or a different actuator capable of moving the rod <NUM> upwardly and downwardly along its longitudinal axis. Referring to <FIG>, the lever <NUM> may be pivoted about its connection point to the rod <NUM> (e.g., via pivot pin <NUM>) to move the rod <NUM> in an axial direction. Referring to <FIG>, the button <NUM> may be moved in an axial direction along a longitudinal axis of the rod <NUM> to move the rod <NUM> in the axial direction.

Referring to <FIG>, the lever <NUM> may be movable by a user between a first position in which the lock member <NUM> is engaged with the body <NUM> of the kettlebell <NUM> and a second position in which the lock member <NUM> is disengaged from the body <NUM>. Referring to <FIG>, when in the first position, an upper surface of the lever <NUM> may be substantially coplanar or flush with an upper surface of the cap <NUM>. In the first position of the lever <NUM>, the rod <NUM> may be positioned in an upward position in which the lock member <NUM> is engaged with the wall <NUM>, thereby restricting rotation of the rod <NUM> relative to the body <NUM> of the kettlebell <NUM>. The lever <NUM> may be shaped to retain the rod <NUM> in the upward position. Referring to <FIG>, when in the second position, the lever <NUM> may extend upwardly at a transverse angle relative to an upper surface of the cap <NUM>. In the second position of the lever <NUM>, the rod <NUM> may be positioned in a downward position in which the lock member <NUM> is disengaged from the wall <NUM>, thereby permitting rotation of the rod <NUM> relative to the body <NUM> of the kettlebell <NUM>. By extending upward from the cap <NUM> in the second position, the lever <NUM> may function as an indicator to the user that the weight of the kettlebell <NUM> may be adjusted.

The lever <NUM> may include a cam surface <NUM> that bears against an upper side <NUM> of the wall <NUM> to adjust the vertical distance between the pivot pin <NUM> and the wall <NUM>, thereby moving the selector rod <NUM> in a vertical direction along its longitudinal axis. When the lever <NUM> is moved from the first position (locked configuration, see <FIG>) to the second position (unlocked configuration, see <FIG>), the lever <NUM> may lower the rod <NUM> relative to the body <NUM>. For example, the cam surface <NUM> may be shaped such that the distance between the portion of the cam surface <NUM> contacting the upper side <NUM> of the wall <NUM> in the first position of the lever <NUM> and the pivot pin <NUM> is greater than the distance between the portion of the cam surface <NUM> contacting the upper side <NUM> of the wall <NUM> in the second position of the lever <NUM> and the pivot pin <NUM>, thereby lowering the vertical location of the pivot pin <NUM> (and thus the rod <NUM>) when pivoting the lever <NUM> from the first position to the second position. Conversely, when the lever <NUM> is pivoted from the second position to the first position, the lever <NUM> raises the rod <NUM> relative to the body <NUM>. In operation, the user may pivot the lever <NUM> from the first position to the second position to unlock the weight selector assembly <NUM>, adjust the weight of the kettlebell <NUM> by rotating the cap <NUM> relative to the body <NUM> of the kettlebell <NUM>, and then pivot the lever <NUM> from the second position to the first position to lock the weight selector assembly <NUM>, thereby inhibiting the weights <NUM> from being inadvertently detached from the kettlebell <NUM> during exercise.

Referring to <FIG>, the button <NUM> may be movable by a user between a first position in which the lock member <NUM> is engaged with the body <NUM> of the kettlebell <NUM> and a second position in which the lock member <NUM> is disengaged from the body <NUM>. Referring to <FIG>, when in the first position, an upper surface of the button <NUM> may be substantially coplanar or flush with (or protrude slightly upwardly from) an upper surface of the cap <NUM>. In the first position of the button <NUM>, the rod <NUM> may be positioned in an upward position in which the lock member <NUM> is engaged with the wall <NUM>, thereby restricting rotation of the rod <NUM> relative to the body <NUM> of the kettlebell <NUM>. Referring to <FIG>, when in the second position, the button <NUM> may be raised relative to an upper surface of the cap <NUM>. In the second position of the button <NUM>, the rod <NUM> may be positioned in a downward position in which the lock member <NUM> is disengaged from the wall <NUM>, thereby permitting rotation of the rod <NUM> relative to the body <NUM> of the kettlebell <NUM>. By extending upward from the cap <NUM> in the second position, the button <NUM> may function as an indicator to the user that the weight of the kettlebell <NUM> may be adjusted. In various embodiments, an outer surface <NUM> of the button <NUM> may be exposed in the second position of the button <NUM> and may include an indicator (such as a red warning indicator) to indicate to the user the weight of the kettlebell <NUM> is adjustable.

The actuator may include a cam <NUM>, a follower <NUM>, and a push rod <NUM> connected to the button <NUM> and configured to push the follower <NUM>, which components are operable to move the selector rod <NUM> in a vertical direction along its longitudinal axis. When the button <NUM> is moved from the first position (locked configuration, see <FIG>) to the second position (unlocked configuration, see <FIG>), the button <NUM> may lower the rod <NUM> relative to the body <NUM>. For example, the cam <NUM> may be shaped such that the follower <NUM> is retained in a lowered position, thereby lowering the rod <NUM>, when moving the button <NUM> from the first position to the second position. Conversely, when the button <NUM> is moved from the second position to the first position, the cam <NUM> may be shaped such that the follower <NUM> is retained in an upper position, thereby raising the rod <NUM> relative to the body <NUM>. In operation, the user may push the button <NUM> in a downward direction (see <FIG>) to unlock the weight selector assembly <NUM> (for example, by freeing the button <NUM> to raise into the second position), adjust the weight of the kettlebell <NUM> by rotating the cap <NUM> (see <FIG>) relative to the body <NUM> of the kettlebell <NUM> to a different weight setting, and then push the button <NUM> in a downward direction from the second position to the first position (see <FIG>) to lock the weight selector assembly <NUM>, thereby inhibiting the weights <NUM> from being inadvertently detached from the kettlebell <NUM> during exercise.

Referring to <FIG>, the base <NUM> may be configured to support weights <NUM> not coupled to the body <NUM> of the kettlebell <NUM>. For example, as illustrated in <FIG>, the first weight <NUM>-<NUM>, the second weight <NUM>-<NUM>, the third weight <NUM>-<NUM>, the fourth weight <NUM>-<NUM>, and the fifth weight <NUM>-<NUM> are arranged in a vertical stack and are supported by the base <NUM>. When the body <NUM> of the kettlebell <NUM> is placed over weights <NUM> supported by the base <NUM>, the selector rod <NUM> may be rotated relative to the body <NUM> to selectively couple one or more of the weights <NUM> to the body <NUM>. When one or more of the weights <NUM> are properly coupled to the body <NUM> (such as when the cap <NUM> is rotated into one of the weight settings <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> as illustrated in <FIG>), the body <NUM> of the kettlebell <NUM> and the coupled weights <NUM> may be removed from the base <NUM>. However, when one or more of the weights <NUM> are not properly coupled to the body <NUM> (such as when the cap <NUM> is positioned between weight settings), the body <NUM> of the kettlebell <NUM> and the coupled weights <NUM> may be restricted from being removed from the base <NUM> until the weights are properly coupled to the body <NUM>.

Referring to <FIG> and <FIG>, the selector rod <NUM> may be configured to selectively engage the base <NUM> to restrict removal of the kettlebell <NUM> from the base <NUM>. For example, the rod <NUM> may be configured to engage the base <NUM> in rotational positions of the rod <NUM> in which one or more weights <NUM> are not properly coupled to the body <NUM>. As illustrated in <FIG> and <FIG>, the base <NUM> may define slots <NUM> corresponding to rotational positions of the rod <NUM> in which weights <NUM> are fully coupled to the body <NUM>. For example, the base <NUM> may include a slot <NUM> for each weight setting <NUM> of the kettlebell <NUM>. As illustrated in <FIG>, the base <NUM> may include a first slot <NUM>-<NUM> corresponding to the first weight setting <NUM>-<NUM>, a second slot <NUM>-<NUM> corresponding to the second weight setting <NUM>-<NUM>, a third slot <NUM>-<NUM> corresponding to the third weight setting <NUM>-<NUM>, a fourth slot <NUM>-<NUM> corresponding to the fourth weight setting <NUM>-<NUM>, a fifth slot <NUM>-<NUM> corresponding to the fifth weight setting <NUM>-<NUM>, and a sixth slot <NUM>-<NUM> corresponding to the sixth weight setting <NUM>-<NUM>.

The selector rod <NUM> may include a transverse pin <NUM> configured to be aligned with the slots <NUM> at the corresponding rotational positions of the rod <NUM>. When the pin <NUM> is aligned with one of the slots <NUM>, the body <NUM> of the kettlebell <NUM> can be removed from the base <NUM>. When the pin <NUM> is misaligned with the slots <NUM>, the base <NUM> prevents the body <NUM> of the kettlebell <NUM> from being removed from the base <NUM> until the pin <NUM> is aligned with one of the slots <NUM>. The base <NUM> may define an internal void connecting the slots <NUM> together to allow the pin <NUM> to be rotated relative to the base <NUM> and selectively align the pin <NUM> with respective slots <NUM> when a proper weight selection is made by the user. As previously discussed, the base <NUM> may be fixedly secured to a support structure, thereby preventing the user from lifting the base <NUM> from the support structure.

<FIG> is a schematic view of the base <NUM> with the weight selector assembly <NUM> in a proper weight-selection position in accordance with various embodiments of the present disclosure. As illustrated in <FIG>, the pin <NUM> is aligned with one of the slots <NUM>-<NUM> corresponding to the first weight setting <NUM>-<NUM> (see <FIG>). In this rotational position, the pin <NUM> can be removed from the base <NUM> via the first slot <NUM>-<NUM>, thereby allowing the kettlebell <NUM> to be removed from the base <NUM>. Similarly, the kettlebell <NUM> can be removed from the base <NUM> when the pin <NUM> is aligned with the second slot <NUM>-<NUM>, the third slot <NUM>-<NUM>, the fourth slot <NUM>-<NUM>, the fifth slot <NUM>-<NUM>, and the sixth slot <NUM>-<NUM>. The base <NUM> may include more or less slots <NUM> based on the number of weight settings of the kettlebell <NUM>.

<FIG> is a schematic view of the base <NUM> with the weight selector assembly <NUM> in an improper weight-selection position in accordance with various embodiments of the present disclosure. The base <NUM> may define recesses or seats <NUM> between adjacent slots <NUM>, and the seats <NUM> may correspond to rotational positions of the selector rod <NUM> in which one or more weights <NUM> are improperly coupled to the body <NUM> of the kettlebell <NUM>. The transverse pin <NUM> may be configured to be aligned with the seats <NUM> at the corresponding improper rotational positions of the rod <NUM> to restrict removal of the kettlebell <NUM> from the base <NUM> until the pin <NUM> is aligned with one of the slots <NUM>. For example, as illustrated in <FIG>, the transverse pin <NUM> is located in seat <NUM> located between the first slot <NUM>-<NUM> and the second slot <NUM>-<NUM>. The position of the transverse pin <NUM> in <FIG> generally corresponds to the indicator <NUM> being improperly located between the first weight setting <NUM>-<NUM> and the second weight setting <NUM>-<NUM> (see <FIG>). In this rotational position, the pin <NUM> cannot be removed from the base <NUM> via one of the slots <NUM>, thereby preventing the kettlebell <NUM> from being removed from the base <NUM> until the pin <NUM> is aligned with one of the slots <NUM> by rotating the selector rod <NUM> relative to the base <NUM> into a proper weight setting <NUM>.

Referring generally to <FIG>, a user may adjust the weight of a kettlebell <NUM> by rotating the selector rod <NUM> to couple one or more of the weights <NUM> to the body <NUM> of the kettlebell <NUM>. After a desired number of weights <NUM> are coupled to the body <NUM> of the kettlebell <NUM>, the lock member <NUM> may be engaged with the body <NUM> of the kettlebell <NUM> to restrict rotation of the selector rod <NUM> relative to the weights <NUM>, thereby ensuring the weights are not inadvertently detached from the body <NUM> of the kettlebell <NUM> during exercise. The lock member <NUM> may be formed as a toothed plate that is non-rotatably coupled to the selector rod <NUM>, and the toothed plate <NUM> may be intermeshed with the castellated wall <NUM> of the body <NUM> of the kettlebell <NUM> to restrict rotation of the selector rod <NUM> relative to the weights <NUM> during exercise. If a proper weight selection has not been made, then the kettlebell <NUM> may be restrained to the base <NUM> for safety purposes. Once a proper weight selection has been made, the kettlebell <NUM> may be removed from the base <NUM>.

<FIG> show a kettlebell system <NUM> and components thereof in accordance with further examples of the present disclosure. The kettlebell system <NUM> includes an adjustable weight kettlebell <NUM>. The adjustable weight kettlebell <NUM> is configured to selectively removably couple to one or more of a plurality of weights <NUM>. The adjustable weight kettlebell <NUM> may be configured to automatically unlock for weight adjustment by placing the kettlebell <NUM> on a support surface (e.g., a base <NUM>). In some embodiments, the kettlebell system <NUM> may further include a base <NUM>. The base <NUM> is positionable on, and in various embodiments secured to, a support structure, such as a floor, a stand, or other structure providing a support surface. In some embodiments, the base <NUM> may include traction features <NUM> on the bottom side of the base <NUM> for increasing the friction between the bottom side of the base <NUM> and the support surface and thus reducing the risk of slip of the base <NUM>, and the kettlebell <NUM> when resting on the base, relative to the support surface. When not being used to perform an exercise, the kettlebell <NUM> may be positioned on the base <NUM>, as shown in <FIG>. In such instances, the kettlebell <NUM> may be supported by the base <NUM> such that the kettlebell <NUM> is oriented in an upright position with the grip or handle <NUM> of the kettlebell <NUM> directed generally upward to facilitate grasping by a user. In some embodiments, the kettlebell system <NUM> is configured such that placing the kettlebell <NUM> on the base <NUM> automatically unlocks the kettlebell <NUM> for weight adjustment.

The kettlebell body <NUM> includes a housing <NUM> and a handle <NUM> coupled to the housing. As shown in <FIG> the housing <NUM> is implemented using a plurality of housing portions operatively joined together. For example, the housing <NUM> may include a first or top housing portion <NUM>-<NUM> and a second or bottom housing portion <NUM>-<NUM> joined to the top housing portion <NUM>-<NUM>.

The kettlebell body <NUM> may be configured for functional and/or aesthetic purposes. For example, the outer contours of the housing <NUM> may be configured to provide both aesthetically pleasing appearance and enhance ergonomics. The housing <NUM> includes a third housing portion <NUM>-<NUM>. In the example in <FIG>, the third housing portion <NUM>-<NUM> is positioned between the top and bottom housing portions <NUM>-<NUM> and <NUM>-<NUM>, respectively, and may thus also be referred to as middle housing portion <NUM>-<NUM>. In some embodiments, the middle housing portion <NUM>-<NUM> may be configured to function as a bumper. For example, the middle housing portion <NUM>-<NUM> may protrude radially outward of the contours of the top and bottom housing portions <NUM>-<NUM> and <NUM>-<NUM>, respectively. Additionally and optionally, the middle housing portion <NUM>-<NUM> may be formed of or coated with a material, which is softer than the other two housing portions. The top and bottom housing portions <NUM>-<NUM> and <NUM>-<NUM>, respectively, may be made of a relatively rigid material such as metal, a rigid and relatively high-strength plastic, or a composite material, while the middle housing portion <NUM>-<NUM> may be made of or include a resiliently deformable material such as rubber or other type of elastomer material. In some embodiments, one of the top and bottom housing portions <NUM>-<NUM> and <NUM>-<NUM>, respectively, may extend into the other, which may enhance the strength and rigidity of the coupling between the top and bottom housing portions <NUM>-<NUM> and <NUM>-<NUM>, respectively. In the example in <FIG>, the bottom housing portion <NUM>-<NUM> extends into the top housing portion <NUM>-<NUM>. In other embodiments, the arrangement may be reversed. The bottom housing portion <NUM>-<NUM> may include an upper part <NUM> that extends into substantially the full height of the top housing portion <NUM>-<NUM>.

The handle <NUM> may be implemented as a generally tubular member curved into an ergonomically suitable shape. As shown in <FIG> and 20A, the handle <NUM> extends into the housing, for example through the top housing portion <NUM>-<NUM> and is coupled to the bottom housing portion <NUM>-<NUM> (e.g., using the fasteners <NUM>). Such an arrangement provides a more rigid and secure connection between the handle <NUM> and kettlebell body <NUM>, which may reduce the risk of separation of the handle and thus injury during use of the kettlebell <NUM>, particularly when the kettlebell <NUM> is loaded with weights. In some embodiments, the handle <NUM> may implemented as a generally hallow tubular member. In some embodiments, the handle <NUM> may include one or more inserts <NUM> in at least a portion of the interior of the handle <NUM>, such as the portion extending into the housing, e.g., for increasing the stiffness of that portion of the handle <NUM>.

The kettlebell system <NUM> may include one or more removable weights <NUM> configured to be removably coupled to the kettlebell body <NUM> (see e.g., <FIG>). The kettlebell <NUM> may be configured to removably receive and couple to any number of a plurality of weights <NUM>, some or all of which may have a different mass and thus result in a different weight being added to the kettlebell <NUM> for adjusting the total weight of the kettlebell <NUM>. In the illustrated example, the kettlebell <NUM> is configured to couple to five individual weights including a first weight <NUM>-<NUM>, a second weight <NUM>-<NUM>, a third weight <NUM>-<NUM>, a fourth weight <NUM>-<NUM>, and a fifth weight <NUM>-<NUM>. In other embodiments, the kettlebell system <NUM> may include a different number of weights to provide an adjustable weight kettlebell with different characteristics, such as a different maximum total weight and/or different increments of weight adjustments of the kettlebell. When one or more of the weights <NUM> are not coupled to the kettlebell body <NUM>, they may be supported by the base <NUM> in a stack <NUM>, e.g., as shown in <FIG>. In some embodiments, the weights <NUM> may be supported on top of the base <NUM>. In some embodiments, as shown in <FIG> and <FIG>, the base <NUM> may include a base cavity <NUM> configured to receive at least one of the weights <NUM>, such as the bottom weight <NUM>-<NUM>) in the cavity <NUM>.

As shown e.g., in <FIG>, the kettlebell <NUM> includes a kettlebell body <NUM> defining a kettlebell cavity <NUM>. The cavity <NUM> is configured to receive one or more of the plurality of weights <NUM> at least partially within the cavity <NUM>. In some embodiments, fewer than all of the weights may be received fully within the cavity. In the illustrated example, four of the five weights may be received substantially fully within the cavity <NUM>. The fifth or bottom weight <NUM>-<NUM> may be coupled to the kettlebell body <NUM> with only a portion of the bottom weight <NUM>-<NUM> being received in the cavity <NUM> when coupled to the body <NUM>. In some examples, at least one of the weights, such as the bottom weight <NUM>-<NUM>, may be coupled to the body without it being received in the cavity <NUM>. In yet other embodiments, the kettlebell system may be configured such that all of the removable weights are substantially fully within the cavity <NUM> when coupled to the kettlebell body <NUM>. Thus, the phrase in the cavity as used herein can imply either fully within or at least partially in the cavity.

In some embodiments, when coupled to the kettlebell body <NUM>, the one or more weights <NUM> are non-rotatable relative to the body <NUM>. In some such embodiments, the cavity <NUM> may be configured to non-rotatably receive one or more of the plurality of weights. For example, as shown in <FIG>, the weights <NUM> may have a non-circular shape, in this case generally octagonal but in other examples the shape may be triangular, rectangular, pentagonal, or other suitable regular or irregular shape. The shape of the individual weights <NUM> may correspond to the shape of the cavity <NUM> such that interior walls <NUM> of the body <NUM> defining the cavity <NUM> inhibit the weights <NUM> from rotating relative to the body <NUM>. In some embodiments, the weights <NUM> may have a generally circular shape, but the weights <NUM> may be keyed to the body <NUM> during insertion of the weights <NUM> into the cavity <NUM>. For example, the weights <NUM> and the body <NUM> may include corresponding keying structures (such as one or more corresponding grooves and ribs) that inhibit rotation of the weights <NUM> relative to the body <NUM> when the weights <NUM> are positioned in the cavity <NUM>.

As shown for example in <FIG> and <FIG>, the kettlebell <NUM> may include a weight selector assembly <NUM> configured to selectively couple one or more of the weights <NUM> to the body <NUM>. The weight selector assembly <NUM> includes a selector rod <NUM> coupled to the body <NUM> and operable to selectively couple one or more of the weights <NUM> to the body <NUM>. The rod <NUM> may be rotatably coupled to the body <NUM>, such that rotation of the rod <NUM> relative to the body <NUM> allows the user to selectively couple one, a select number, or all of the plurality of weights <NUM> to the body <NUM>. The rod <NUM> extends into the cavity <NUM>, through at least a portion of the cavity <NUM>. For example, the rod <NUM> may extend through the portion of the cavity such that the rod extends through each of the apertures <NUM> of the plurality of weights <NUM> to allow each of the plurality of weights <NUM> to be coupled to the rod <NUM>. In the illustrated example, the rod <NUM> extends through the cavity <NUM> without protruding beyond the bottom most surface of the kettlebell body <NUM>, such as to prevent contact of the rod <NUM> with a support surface on which the kettlebell <NUM> may be placed. In some embodiments, such as in the illustrated example in <FIG>, the rod <NUM> is substantially centered within the cavity <NUM>, meaning that the distance of the rod <NUM> to any two diametrically opposed locations of the wall defining the cavity <NUM> is substantially the same. The rod <NUM> is rotatable relative to the plurality of weights <NUM> such that rotation of the rod <NUM> relative to the weights enables selective coupling of one or more of the weights <NUM> to the kettlebell body <NUM>.

Engagement members, such as pins <NUM>, may extend from the rod <NUM> for coupling the weights <NUM> to the rod <NUM>. The pins <NUM> may arranged at spaced apart locations along the length of the length of the rod <NUM>. The pins <NUM> may be configured to engage with an underside of a portion of a respective weight to retain the respective weight in the cavity <NUM>. The pins <NUM> may be oriented cross-wise or transverse (e.g., perpendicular) to the rod <NUM>. In some embodiments, the individual pins <NUM> may be implemented as two diametrically opposed extensions from a central portion of the rod <NUM>. The weight selector assembly <NUM> may include a separate pin <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM> for engaging with each of the weights <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, respectively. The first pin <NUM>-<NUM> may be positioned with respect to the rod <NUM> (e.g., at a particular location along the length of the rod <NUM>) to engage the first weight <NUM>-<NUM> and selectively couple the first weight <NUM>-<NUM> depending on the rotational position of the pin <NUM>-<NUM> relative to the weight <NUM>-<NUM>. Similarly, the second, third, fourth and fifth pins <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>, respectively, may be positioned with respect to the rod <NUM> to engage the second, third, fourth, and fifth weights <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>, respectively, selectively coupling one or more of these weights to the body <NUM> depending on the rotational position of the pins <NUM> relative to the weights <NUM>.

The selector rod <NUM> may be coupled to an actuator <NUM>, at least a portion of which is provided on the exterior of the kettlebell body <NUM> such that at least that portion of the actuator <NUM> is accessible to the user. In use, manipulation (e.g., rotation) of the actuator by the user effects a rotation of the rod <NUM> relative to the body <NUM>. Thus, when the body <NUM> is placed over the stack <NUM> of weights, the rotation of the rod <NUM> relative to the body <NUM> is also a rotation relative to the weights <NUM>, which enables a selection of the number of weights to be coupled to the body <NUM>. For example, the actuator <NUM> may be implemented as a knob <NUM> having a rotation axis R. The rod <NUM> may be fixed to the knob <NUM> with its longitudinal axis aligned with the rotation axis R of the knob <NUM>, such that rotation of the knob <NUM> about axis R (e.g., in the direction indicated by arrow <NUM>) causes a corresponding rotation of the rod <NUM> about the axis R. The manipulation of the actuator <NUM>, and correspondingly the rotation of the rod <NUM>, causes a different subset of pins to operatively engage their respective weights and thus enables a different combination of weights <NUM> to be coupled to the kettlebell body <NUM>, thus effecting an adjustment of the amount of weight kettlebell body <NUM>.

The actuator <NUM> (e.g., knob <NUM>) may be located on a top side, or at a different suitable location, of the kettlebell body. In the illustrated example, the knob <NUM> is rotatably coupled to a cover plate <NUM>, which may be a separate component coupled to the housing <NUM> or integrally formed with the housing <NUM>. In this example, to facilitate assembly of certain ones of the internal moving components of the kettlebell, the cover plate <NUM> is separate but coupled to the upper housing portion <NUM>-<NUM> and when coupled thereto conceals the locking mechanism (e.g., cam <NUM> and follower <NUM>) of the kettlebell <NUM>. In other embodiments, the assembly of components may be effected from the inside of the cavity <NUM> and the cover plate <NUM> may thus be integrally formed with the housing <NUM>.

The weight selector assembly <NUM> may be operatively associated with a weight selection indicator. For example, markings may be provided on the kettlebell body <NUM>, such as on the cover plate <NUM> below the knob <NUM>. The knob <NUM> may include a cutout or recess <NUM> defined radially inward from the perimeter of the knob <NUM>. Aligning the recess <NUM> with one of the plurality of markings may provide an indication of the selected weight. In the present example of a kettlebell that can receive up to five weights, there may be six discrete markings that include a first marking indicating the weight of the empty kettlebell body <NUM>, a second marking indicating the weight of kettlebell body <NUM> plus the first plate <NUM>-<NUM>, a third marking indicating the weight of the kettlebell body <NUM> and the top two weights (i.e. the first and second weights <NUM>-<NUM> and <NUM>-<NUM>, respectively), and so on until a sixth marking, which indicates the total aggregate weight of the kettlebell body <NUM> plus all five weights. As will be appreciated, in other embodiments, the increments of adjustment available for the kettlebell system <NUM>, and thus the number of markings, may be different. For example, the kettlebell may be designed to receive only a single weight, only two weights or any number of weights fewer than five. In other examples, the kettlebell system may be operable for use with a number of weights greater than five. Also, the weight selection indicator may be implemented using a different combination of features, such as instead of using a recess and providing the markings below the knob <NUM>, the knob <NUM> may be provided with a radially-aligned outward-pointing arrow, and the markings may be positioned outside of and around the primer of the knob <NUM>, such that when the knob <NUM> is rotated to any one of the different rotational positions, a different selected weight may be indicated by the alignment of the arrow with one of the plurality of markings. In yet other examples, the actuator may be in the form of a lever configured to rotate about the axis R, such that aligning the longitudinal direction of the lever with a particular rotational position and associated marking may indicate the selected weight for the kettlebell <NUM>. The actuator and weight selection indicator may be implemented in accordance with other suitable examples, including the examples described with reference to the embodiments of kettlebell <NUM>.

As shown for example in <FIG> and <FIG>, each of the plurality of weights <NUM> defines a respective aperture <NUM>. In this example, the first weight <NUM>-<NUM> defines a first aperture <NUM>-<NUM>, the second weight <NUM>-<NUM> defines a second aperture <NUM>-<NUM>, the third weight <NUM>-<NUM> defines a third aperture <NUM>-<NUM>, the fourth weight <NUM>-<NUM> defines a fourth aperture <NUM>-<NUM>, and the fifth weight <NUM>-<NUM> defines a fifth aperture <NUM>-<NUM>. The configuration of one aperture may differ from the configurations of the other apertures to enable selective coupling of the weights <NUM> to the kettlebell <NUM>. The aperture <NUM> of each weight <NUM> is configured to engage with the weight selector assembly <NUM> of the kettlebell <NUM> to selectively couple one or more of the weights <NUM> to the kettlebell body <NUM>. The aperture <NUM> of at least some of the weights may be through apertures. For example, the apertures <NUM> of the upper weights (e.g., weights <NUM>-<NUM> through <NUM>-<NUM>) may be through apertures meaning that they extend through the height of the respective weight, such that the selector rod <NUM> can pass through for coupling to the bottom weight. The aperture of the bottom weight may be but need not be a through aperture. As shown in <FIG>, the aperture <NUM>-<NUM> of the bottom weight <NUM>-<NUM> is formed in and extends only through an upper portion <NUM> of the bottom weight <NUM>-<NUM>. In other examples, a different suitable arrangement or combination of apertures <NUM> may be used.

The weights <NUM> may be configured to selectively allow passage of the pins <NUM> through the weights <NUM>, or at least a portion thereof, depending on the rotational position of the rod <NUM>, and correspondingly of the pins <NUM>, relative to the weights <NUM>. As illustrated, for example, in <FIG>, <FIG>, and <FIG>, the aperture <NUM> of each weight <NUM> may include a passageway <NUM> configured to selectively allow passage of one or more of the pins <NUM> depending upon the rotational position of the rod <NUM> and pin(s) <NUM>. In the present example, the first weight <NUM>-<NUM> includes a first passageway <NUM>-<NUM>, the second weight <NUM>-<NUM> includes a second passageway <NUM>-<NUM>, the third weight <NUM>-<NUM> includes a third passageway <NUM>-<NUM>, the fourth weight <NUM>-<NUM> includes a fourth passageway <NUM>-<NUM>, and the fifth weight <NUM>-<NUM> includes a fifth passageway <NUM>-<NUM>. In this example, the apertures <NUM> are centrally located in the weights <NUM> such that when the weights <NUM> are stacked on the base <NUM> (as showing in <FIG>) the apertures <NUM> are arranged along the centerline <NUM> of the kettlebell <NUM>. Similarly, the rod <NUM> is arranged to extend into the cavity <NUM> along the centerline <NUM>, such that the rod <NUM> may extend through the apertures <NUM> when the kettlebell body <NUM> is placed over the stack <NUM> of weights <NUM>. The pins <NUM> and the passageways <NUM> extend radially outward in relation to the centerline <NUM> of the kettlebell <NUM>. The base <NUM> may include alignment features, which may cooperate with locating features on the kettlebell body to align the kettlebell when placing the kettlebell on the base.

The selector assembly <NUM> may be configured to provide the rod <NUM> (e.g., via rotation of the knob <NUM>), and thus the pins <NUM>, into any one of a plurality of predetermined rotational positions (e.g., positions <NUM>-<NUM> through <NUM>-<NUM> shown in <FIG>). Each of the rotational positions <NUM>-<NUM> through <NUM>-<NUM> is associated with a respective one of the plurality of discrete weight settings of the kettlebell. The passageways <NUM> may provide selective passage of one or more of the pins <NUM> during removal of the kettlebell <NUM> from the base <NUM> depending on the rotational position of the rod <NUM> and pins <NUM> relative to the weights <NUM>. For example, as shown in <FIG>, in one rotational position <NUM>-<NUM>, the passageways <NUM> may allow passage of the pins <NUM> through all of the weights <NUM>, thereby not coupling any of the weights <NUM> to the kettlebell body <NUM>. In another rotational position <NUM>-<NUM>, the first pin <NUM>-<NUM> may engage the first weight <NUM>-<NUM>, but the passageways <NUM>-<NUM> through <NUM>-<NUM> of the remaining weights may allow passage of the remaining pins <NUM>-<NUM> through <NUM>-<NUM>, thereby coupling only the first weight <NUM>-<NUM> to the kettlebell body <NUM>. In another rotational position <NUM>-<NUM>, the first pin <NUM>-<NUM> may engage the first weight <NUM>-<NUM> and the second pin <NUM>-<NUM> may engage the second weight <NUM>-<NUM>, but the passageways <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM> of the remaining weights may allow passage of the remaining pins <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, thereby coupling only the first and second weights <NUM>-<NUM> and <NUM>-<NUM>, respectively, to the kettlebell body <NUM>. In yet another rotational position <NUM>-<NUM>, the first, second and third pins <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>, respectively, may engage a respective one of the first, second, and third weights <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>, respectively, but the passageways <NUM>-<NUM> and <NUM>-<NUM> of the remaining weights <NUM>-<NUM> and <NUM>-<NUM> may allow passage of the remaining pins <NUM>-<NUM> and <NUM>-<NUM>, thereby coupling only the first three weights to the kettlebell body <NUM> and so on until a final rotational position <NUM>-<NUM> in which all of the pins <NUM>-<NUM> through <NUM>-<NUM> engage a respective one of the weights <NUM>-<NUM> through <NUM>-<NUM>, thereby coupling all of the weights <NUM>-<NUM> through <NUM>-<NUM> to the kettlebell body <NUM>.

With continued reference to <FIG>, <FIG>, and <FIG>, the passageways <NUM> may be differently sized to allow, depending on the rotational position of the rod <NUM> and pins <NUM> relative to the weights <NUM>, different groupings of the pins <NUM> to pass through the passageways during removal of the kettlebell <NUM> from the base <NUM>. For example, the first passageway <NUM>-<NUM> may be the narrowest passageway and may be sized to allow passage of the pins <NUM> in only one of the plurality of rotational positions (e.g., <NUM>-<NUM>). Thus, when the rod <NUM> is in a first rotational position <NUM>-<NUM> corresponding to the minimum (also referred to as the empty or unloaded) kettlebell weight setting, the pins <NUM> align with the passageway <NUM>-<NUM> thus being permitted passage through the passageway <NUM>-<NUM> and none of the weights are coupled to the kettlebell body <NUM>. When the rod <NUM> is in a rotational position corresponding to the first loaded weight setting or any of the other loaded weight settings (e.g., <NUM>-<NUM>-<NUM>-<NUM>), the pins <NUM> do not align with the passageway <NUM>-<NUM> thus being prevented passage through the passageway <NUM>-<NUM> coupling at least the first weight <NUM>-<NUM> to the kettlebell body <NUM>.

The second passageway <NUM>-<NUM> may be wider than the first passageway <NUM>-<NUM> but narrower than the other passageways <NUM>-<NUM>, <NUM>-<NUM>, and <NUM>-<NUM>. The second passageway may have a portion that aligns with the first passageway <NUM>-<NUM> when the weights are stacked on the base <NUM>, thereby providing a rotational position in which passage of the pins <NUM> is permitted through both the first and second weights <NUM>-<NUM> and <NUM>-<NUM>, respectively. The second passageway <NUM>-<NUM> may be sized to allow passage of the second, third, fourth, and fifth pins <NUM>-<NUM> through <NUM>-<NUM>, respectively, in two rotational positions of the rod <NUM> (e.g., <NUM>-<NUM> and <NUM>-<NUM>). That is, when the rod <NUM> is in the first rotational position corresponding to the empty kettlebell weight setting and when the rod <NUM> is in the second rotation position corresponding to the first loaded weight setting, the pins <NUM> are aligned with the passageway <NUM>-<NUM> thus being permitted passage through the passageway <NUM>-<NUM>, causing the second weight <NUM>-<NUM> to be decoupled from the kettlebell body <NUM>. When the rod <NUM> is in a rotational position other than the first and second rotational positions (e.g., a third rotational position <NUM>-<NUM>), the pins <NUM>-<NUM> do not align with the passageway <NUM>-<NUM> thus being prevented passage through the passageway <NUM>-<NUM>, which causes the pins <NUM>-<NUM> to engage the second weight <NUM>-<NUM> coupling both the first and the second weights to the kettlebell body <NUM>.

Similarly, the third passageway <NUM>-<NUM> may be wider than the first and second passageways <NUM>-<NUM> and <NUM>-<NUM>, but narrower than the passageways of the weights below the third weight to allow passage of the pins <NUM> through the third passageway when the rod <NUM> is in any of the first through third rotational positions. When the rod <NUM> is in any position other than the first through third rotational positions (e.g., in a fourth rotational position <NUM>-<NUM>, as shown in <FIG>), the pins <NUM> are not aligned with the passageway <NUM>-<NUM> thus being prevented passage through the passageway <NUM>-<NUM> and thereby engage the third weight <NUM>-<NUM> coupling the weight <NUM>-<NUM> to the kettlebell body <NUM>. In a similar manner, the fourth passageway <NUM>-<NUM> is wider than the first through third passageways <NUM>-<NUM> through <NUM>-<NUM>, but narrower than the fifth passageway <NUM>-<NUM> to provide one rotational position (e.g., <NUM>-<NUM>) in which the fourth weight <NUM>-<NUM> is coupled to the body <NUM> without coupling the fifth weight <NUM>-<NUM> to the body <NUM>. The last passageway, in this case the fifth passageway <NUM>-<NUM>, is the widest of the passageways <NUM>. In this example, the fifth passageway <NUM>-<NUM> is sized to allow passage of the fifth pins <NUM>-<NUM> in and out of the passageway <NUM>-<NUM> when the rod <NUM> is in all but one rotational position, namely the sixth rotational position <NUM>-<NUM>, which is associated with the maximum weight setting of the kettlebell <NUM>. Thus, when the rod <NUM> is in any one but the sixth rotational position <NUM>-<NUM>, the pins <NUM>-<NUM> pass through the passageway <NUM>-<NUM> and the fifth weight <NUM>-<NUM> is not coupled to the body, but instead may remain supported on the base <NUM>, as shown in <FIG>. When the rod <NUM> is in the sixth rotational position, the pins <NUM>-<NUM> are prevented from passing through the fifth passageway <NUM>-<NUM> and instead engage the fifth weight <NUM>-<NUM> coupling the weight <NUM>-<NUM> to the kettlebell body <NUM>. Accordingly, based on the rotational position of the rod <NUM> and its corresponding alignment or misalignment with one or more of the passageways <NUM>-<NUM> through <NUM>-<NUM>, no weights <NUM>, or one or more of weights <NUM> may be selectively coupled to the body <NUM> of the kettlebell <NUM>.

To avoid accidental separation of the weights <NUM> from the kettlebell body <NUM>, the weight selector assembly <NUM> may be operatively associated with a locking mechanism. The locking mechanism may be configured to inhibit adjustments via the weight selector assembly <NUM>, for example by restricting or preventing rotation of the selector rod <NUM> whenever the kettlebell <NUM>, and correspondingly the weight selector assembly <NUM>, is in a locked configuration. Rotation of the selector rod <NUM> and thus an adjustment to the weight of the adjustable weight kettlebell <NUM> may be permitted only when the kettlebell <NUM> is in the unlocked configuration. <FIG> and <FIG> illustrate cross-sectional views of the kettlebell <NUM> in the unlocked configuration, while <FIG> illustrates cross-sectional views of the kettlebell <NUM> in the locked configuration. In some embodiments, the kettlebell system <NUM> is configured such that placement of the kettlebell <NUM> on a support surface, such as the base <NUM>, automatically provides the kettlebell <NUM> in the unlocked configuration or unlocks it for adjustment. Conversely, the kettlebell <NUM> and the weight selector assembly <NUM> are automatically provided into the locked configuration by the removal of the kettlebell <NUM> from the support surface (e.g., base <NUM>), thus locking the kettlebell <NUM> for adjustments. This automatic locking and unlocking by the removal and placement of the kettlebell on the support surface (e.g., base <NUM>) without requiring the user to actuate any additional components can be advantageous as it may increase the efficiency of the user's exercise routine (e.g., by removing the additional steps of locking and locking between weights adjustments). The automatic locking of the kettlebell upon removal from the support surface (e.g., base <NUM>) may reduce the risk of injury, as the user need not remember to lock the kettlebell before continuing exercise.

The locking mechanism may include at least one lock member (e.g., cam follower <NUM>) configured to engage the kettlebell body <NUM> (e.g., cam <NUM>) to restrict or substantially prevent rotation of the selector rod <NUM> when the kettlebell <NUM> is in the locked configuration. Referring now also to <FIG>, the lock member may be implemented using an elongate structure, such as a rod or a bar, or other suitable type of structure disposed transversely to the selector rod <NUM>. The lock member (e.g., cam follower <NUM>) may be non-rotatably coupled to the rod <NUM>, such that it rotates with the rotation of the rod <NUM>. The lock member (e.g., cam follower <NUM>) may be movable with respect to the rod <NUM> (e.g., in the transverse direction <NUM>) depending on whether the selector assembly <NUM> is in the locked or unlocked configuration. In some embodiments, unlocking the kettlebell <NUM> for adjustment involves displacing at least a portion of the rod <NUM> to open a window <NUM> and thereby permit transverse movement (e.g., toward centerline <NUM>) of the lock member with respect to the rod <NUM>. Conversely, locking the kettlebell <NUM> for adjustment may involve displacing at least a portion of the rod <NUM> to close the window <NUM> and thereby substantially preventing transverse movement of the lock member with respect to the rod <NUM>.

The kettlebell body <NUM> may include an engagement surface (e.g., cam <NUM>), which includes a plurality of detents <NUM>. The engagement surface may be provided by the sidewall of a recess in an upper portion of the kettlebell body <NUM>, the recess being configured to receive the upper portion of the selector assembly <NUM> that includes the lock member. In some embodiments, the engagement surface may be provided by both the sidewall and the base of the recess, or portions thereof. In example illustrated in <FIG> and <FIG>, the engagement surface is provided by a generally circular undulating or gear-shaped surface <NUM>, also referred to as cam surface or simply cam <NUM>. The undulating cam surface <NUM> has an outer radius defined by the detents <NUM> and an inner radius defined by the points of intersection of the ramps <NUM> that separate the detents <NUM>.

The lock member (e.g., cam follower <NUM>) is coupled to the rod <NUM> such that when the rod <NUM> rotates (e.g., in the direction indicated by arrow <NUM>), the lock member follows the cam surface <NUM> by shifting toward and away from the rod <NUM> (as indicated by arrow <NUM>) as the cam follower <NUM> traverses the ramps <NUM> between adjacent detents <NUM>. The lock member (e.g., cam follower <NUM>) may be biased (e.g., using one or more springs <NUM>) away from the rod <NUM> toward the detents <NUM>. In the unlocked configuration, the lock member (e.g., cam follower <NUM>) is capable of moving against the biasing force (e.g., toward the rod <NUM> and away from the detents), while in the locked configuration, the lock member (e.g., cam follower <NUM>) is blocked or otherwise prevented from moving out of a detent <NUM> and thus prevented from shifting into another detent <NUM>. The lock member may be spring-loaded sufficiently biased toward the detents <NUM> such that upon the user releasing the actuator <NUM>, the lock member (e.g., cam follower <NUM>) automatically shifts into the closest detent <NUM>, thus automatically positioning the rod <NUM> into one of the predetermined rotational positions associated with the kettlebell's weight settings. This may ensure that upon release of the actuator (e.g., knob <NUM>), the rod <NUM> is in a position in which none of the weights are attached or one or more of the weights are securely attached to the kettlebell body before the user removes the kettlebell from the base.

In some embodiments, the automatic unlocking of the kettlebell may be achieved by the transmission of an actuation force from the support surface (e.g., base <NUM>) to the kettlebell <NUM>. In one example, the transmission of force is achieved by a movable member in the kettlebell <NUM>, which is biased toward the base and actuated upon placement of the kettlebell <NUM> on the support surface (e.g., base <NUM>). The movable member may be implemented as a plunger (or a series of plungers), incorporated within the selector rod <NUM>, one or more of the weights, or a combination thereof. The selector assembly <NUM> and/or support surface may be configured to enable the support surface to operatively engage the locking mechanism of the kettlebell <NUM>, such as to provide the actuation force to the plunger of the selector rod <NUM>.

Referring to <FIG>, the selector rod <NUM> may include an outer rod or shaft <NUM>, an inner rod or shaft <NUM> movably coupled to the outer rod or shaft <NUM>, and a plurality of radiallyextending pins <NUM> arranged along a length of the rod <NUM>. The outer shaft <NUM> may be constructed from a plurality of outer shaft portions (e.g., first and second outer shaft halves <NUM>-<NUM> and <NUM>-<NUM>, respectively). In other examples, the outer shaft <NUM> may be an integrally formed (or monolithic) component. The pins <NUM> may be rigidly coupled or fixed to the outer shaft <NUM>. For example, the pins <NUM> may be provided as projections extending from a selector plate <NUM>. In one example, the selector plate <NUM> may be a generally elongate flattened structure having inverted triangular portions spaced along the length of the plate, the tips of which function as the pins <NUM>. Continuing with the present example, the selector plate <NUM> may be provided between the two outer shaft halves <NUM>-<NUM> and <NUM>-<NUM> and rigidly coupled thereto. In other examples, the pins <NUM> may be integrally formed with the outer shaft <NUM> or individual pins may be provided and each fixed to the outer shaft in any suitable manner (e.g., by passing the pins into apertures of the outer shaft and/or welding them to the shaft). Any other suitable geometry or configuration that can provide the functionality of the pins <NUM> may be used. For example, one or more, or in some cases each, of the plurality of pins <NUM> may be implemented as rectangular projections.

The outer shaft <NUM> and pins <NUM> are coupled to the kettlebell body <NUM> such that they are rotatable relative to the body <NUM> (to effect a weight selection) but are otherwise fixed in the longitudinal direction. The inner shaft <NUM> is moveably coupled to the outer shaft <NUM>. For example, the inner shaft <NUM> is coupled to the outer shaft <NUM> such that the inner shaft <NUM> is movable in the longitudinal direction (indicated by arrow <NUM>). The inner shaft <NUM> may thus act a plunger (or one of a series of plungers) configured to transmit an actuation force from the base <NUM> to the lock mechanism in the kettlebell body. In some embodiments, the actuation force may be applied by any suitable structure on the base <NUM>, such as an upwardly extending protrusion <NUM>. In the illustrated example, the protrusion <NUM> is centrally located such that it aligns with the intermediate plunger <NUM> in the bottom weight <NUM>-<NUM>. In other examples, any other suitable position or arrangement of actuating components may be used. As shown in <FIG> and <FIG>, the inner shaft <NUM> may be biased toward the base <NUM> (e.g., using one or more springs <NUM>) such that the inner shaft <NUM> automatically shifts downward toward the base when the kettlebell <NUM> is lifted from the base. In some embodiments, the actuation force applied from the base (e.g., via the protrusion <NUM>) may be transmitted to the kettlebell body <NUM> via a series of movable components or plungers. The base <NUM> may actuate one or more intermediate plungers before the force is transmitted to the movable inner rod <NUM>. In <FIG>, the base <NUM> is configured to actuate an intermediate plunger <NUM> provided in the bottom weight <NUM>-<NUM>, which when actuated upward away from the base, provides an actuation force to the inner shaft <NUM>. Utilizing a series of plungers, e.g., with at least one of the series of plungers incorporated into the bottom most weight, may enable a configuration in which the selector rod <NUM> need not extend beyond the bottom most surface of the kettlebell body, which can avoid damage to the selector rod <NUM> and may provide other advantages. In other embodiments, the actuation force may be provided by any other support surface. For example, the bottom weight may be configured to.

Like the outer shaft, the inner shaft <NUM> may be constructed from a plurality of inner shaft portions (e.g., first and second inner shaft halves <NUM>-<NUM> and <NUM>-<NUM>, respectively), as shown in <FIG>. When assembled, the inner shaft halves <NUM>-<NUM> and <NUM>-<NUM> may be spaced apart by a distance configured to accommodate the selector plate <NUM>. The selector plate <NUM> may define one or more slots <NUM> (in this case, first and second slots <NUM>-<NUM> and <NUM>-<NUM>) which receive a portion of the assembled inner shaft <NUM>. The portions of the inner shaft <NUM> received in the slots <NUM> are movably supported using one or more springs (in this case, first and second springs <NUM>-<NUM> and <NUM>-<NUM>), which bias the inner shaft <NUM> away from the upper portion <NUM> of the rod <NUM>. In some embodiments (e.g., as in the example in <FIG>) only a single spring may be used. Using two or more springs may provide redundancy and thus additional safety in the event one of the springs fails. The selector assembly <NUM> is operatively associated with one or more lock members (in this case, first and second cam followers <NUM>-<NUM> and <NUM>-<NUM>) arranged in the upper portion <NUM> of the rod <NUM>. Each of the first and second inner shaft halves <NUM>-<NUM> and <NUM>-<NUM> defines a respective opening or window <NUM>-<NUM> and <NUM>-<NUM> configured to either block or permit the respective cam follower to move towards the centerline of the rod <NUM> depending on longitudinal position of the inner shaft <NUM> relative to the outer shaft <NUM>. In the illustrated example, the first and second cam followers <NUM>-<NUM> and <NUM>-<NUM> are arranged generally orthogonally to the pins <NUM>. In other examples, such as when the pins <NUM> are integrally formed with the outer shaft, the angular relationship between the cam follower(s) and pins may be different, for example the pins and cam followers may be radially aligned.

In use, when the user places the kettlebell body <NUM> on the base <NUM> over the stack <NUM> of weights <NUM>, the base <NUM> (e.g., via the protrusion <NUM>) forces the intermediate plunger <NUM> upward compressing the spring <NUM>, which forces the inner shaft <NUM> upward (in the direction indicated by <NUM>) compressing the one or more springs <NUM>. The upward movement of the inner shaft <NUM> relative to the outer shaft <NUM> lifts the window <NUM> freeing the cam follower <NUM> to move transversely to the rod <NUM> and thereby unlocking the rod <NUM> for rotation. The user may select a desired weight by rotating the knob <NUM> to the desired weight setting, which effects a rotation of the rod <NUM> to one of the predetermined plurality of rotational positions <NUM>-<NUM> through <NUM>-<NUM>. As previously described, by virtue of the cam followers being sufficiently strongly spring loaded towards the detents <NUM> in some examples, if the user releases the knob <NUM> before the knob is fully or perfectly aligned with a given weight setting position, the knob <NUM> may be driven to the nearest weight setting, ensuring that the rod <NUM> is in a position in which all of the selected weights, if any, are securely attached to the kettlebell body. To begin exercise, the user simply lifts the kettlebell <NUM> from the base <NUM>, which causes the inner shaft <NUM> of the rod <NUM> to shift downward (in the direction <NUM>) thereby also shifting the window <NUM> downward and thus locking the rod <NUM> from rotation. The kettlebell <NUM> may thus be configured to automatically lock and unlock the kettlebell <NUM> and the weight selector assembly <NUM> for adjustments responsive to the removal and placement, respectively, of the kettlebell <NUM> on the base <NUM>, which may enhance the user experience. Preventing adjustability of the selector assembly when the kettlebell is off the base may increase the safety of the kettlebell by preventing unintentional or accidental release of weights from the kettlebell body. In contrast, allowing adjustment of the kettlebell only while on the base may ensure that any weights not coupled to the kettlebell body remain supported on the base.

The individual weights <NUM> may have a solid interior. For example, an individual weight may be constructed from a solid block of a rigid material such as steel, formed or shaped to have the desired shape (e.g., for non-rotatably coupling to the cavity <NUM>) and to include the appropriate aperture <NUM> and passageway <NUM> for selectively coupling the weight to the kettlebell <NUM>. In some embodiments, one or more of the weights <NUM> may have a multi-layered construction. As shown, for example, in <FIG>, each of the weights <NUM>-<NUM> through <NUM>-<NUM> may be implemented using a plurality of stacked plates or layers <NUM> enclosed within a weight housing <NUM>. The one or more layers <NUM> may be formed of any suitable material, such as steel, aluminum, or other rigid material. The layers <NUM> may be constructed of materials having different properties (e.g., density, rigidity, etc.) may be arranged within the weight housing <NUM> to produce a weight of any desired configuration. In some examples, layers <NUM> of different properties may be interleaved (e.g., rigid and compliant layers may be stacked in alternating manner). In some examples, layers <NUM> of a relatively rigid and dense material, such as steel, may be spaced apart from other layers <NUM> of the same or different material by voids, for adjusting the overall physical characteristic (e.g., mass and correspondingly weight) of a given individual weight <NUM>. Using a stacked-plate construction may thus allow for more flexibility of adjusting the weight increments of the kettlebell system without having to reconfigure the overall shape and size of the kettlebell <NUM>. Different materials may be used for the different layers of the stacked plate construction in order to achieve weights that have the same dimensions but different weight characteristics.

As shown, for example, in <FIG>, a portion of the underside of each weight <NUM> may be recessed to provide a seat <NUM> for retention of the pins <NUM> when the pins <NUM> are in orientations misaligned with the passageways. The depth of a recessed portion or seat <NUM> may be equal to or greater than a vertical dimension of the respective pin <NUM>, such that the pins <NUM> can be accommodated between two adjacent weights even when the weights are in the stacked configuration. The recessed portion or seat <NUM> thus defines an underside surface via which the respective pins <NUM> engage the individual weights to couple a given weight to the kettlebell body <NUM> when the pins are provided in orientations misaligned with the passageways <NUM>.

In some embodiments, the kettlebell <NUM> may be configured such that such that at least a portion of the bottom weight(s) extends below the bottom-most surface of the housing when coupled to the kettlebell body. In some such embodiments, and referring to <FIG> and <FIG>, a bottom weight <NUM>-<NUM> may include an upper portion <NUM>, which includes the aperture and passageway for coupling the weight <NUM>-<NUM> to the kettlebell. The preceding weight, here the fourth weight <NUM>-<NUM>, includes a cavity <NUM> configured for a cooperating fit with the portion <NUM>. The cavity <NUM> may be configure to receive the upper portion <NUM> of the fifth weight substantially fully therein, allowing the two weights to nest together when the fourth weight <NUM>-<NUM> is stacked onto the fifth weight <NUM>-<NUM> on the base <NUM> and when the two weights are coupled to the kettlebell <NUM>. The cavity <NUM> and upper portion <NUM> may be shaped such that the two weights are non-rotatably nested with one another, which can be achieved by using any of the examples described previously with respect to the cavity <NUM>.

<FIG> show an adjustable weight kettlebell <NUM> according to further examples of the present disclosure. The kettlebell <NUM> may include some or all of the components of the kettlebell <NUM>. For example, the kettlebell <NUM> may include a kettlebell body <NUM>, which defines a cavity <NUM> for receiving one, two or a larger number of weights <NUM>, and a selector assembly <NUM> operatively associated with the kettlebell body for selectively removably couple to one or more of a plurality of weights <NUM> to the body <NUM>. The individual weights may be implemented similarly to the weights <NUM>, and thus, for conciseness, their construction and operation will not be repeated. The weights <NUM> may be implemented according to any of the examples herein.

The kettlebell <NUM> may be configured to automatically lock and unlock by lifting the kettlebell from the support surface (e.g., from the base) and by placing the kettlebell on the support surface (e.g., the base), respectively. When the kettlebell is in use, the kettlebell is removed from the support surface and thus locked. When not being used to perform an exercise, the kettlebell <NUM> may be positioned on a support surface, such as the base <NUM>, which may be configured to automatically unlock the kettlebell (e.g., without requiring the user to manipulate any component of the kettlebell to effect the unlocking).

The kettlebell <NUM> includes a housing <NUM> and a handle <NUM> coupled to the housing. The housing <NUM> is implemented using a plurality of housing portions, in this example a first or top housing portion <NUM>-<NUM>, a second or bottom housing portion <NUM>-<NUM>, and a third or middle housing portion <NUM>-<NUM>. The housing portions may have similar characteristics as the housing portions of housing <NUM>. For example, the bottom housing portion <NUM>-<NUM> may include an upper portion that extends into the top housing portion. The middle housing portion <NUM>-<NUM> may be positioned between the top and bottom housing portions <NUM>-<NUM> and <NUM>-<NUM> and part of the middle housing portion may extend radially outward from the top and bottom hosing portions thus providing the functionality of a bumper.

Similar to kettlebell <NUM>, the kettlebell <NUM> may include a weight selector assembly <NUM> configured to selectively couple one or more of the weights <NUM> to the body <NUM>. The weight selector assembly <NUM> includes a selector rod <NUM> operatively coupled to the body <NUM> for selectively coupling one or more of the weights <NUM> thereto. The selector assembly <NUM> and rod <NUM> may be configured and may operate similar to the selector assembly <NUM> and rod <NUM> of kettlebell <NUM>, and thus their operation will not be repeated. For example, the rod <NUM> may be rotatably coupled to the body <NUM>, such that the rod <NUM> is positionable into any one of a plurality of rotational positions associated with respective ones of the weight selections or settings of the kettlebell <NUM>. Thus, rotation of the rod <NUM>, which can be effected by manipulation of an actuator <NUM> (e.g., a knob <NUM>) causes one or more of the weights <NUM> to be selectively coupled to the kettlebell body <NUM>. The actuator <NUM> may be associated with an weight selection indicator <NUM>. The weight selection indicator <NUM> may be implemented as an annular plate or ring coaxially arranged with the knob <NUM> and including a plurality of markings corresponding to the weight settings on an upward facing surface of the ring. The weight selection indicator <NUM> may be implemented using any other suitable means, including any of the other examples herein. For example, the markings may instead be directly provided on the upper surface (e.g., on the cover plate <NUM>) of the kettlebell <NUM>. The handle <NUM> may extend into the housing <NUM> and thus the top housing portion <NUM>-<NUM> may include a pair of apertures <NUM>-<NUM> and <NUM>-<NUM> configured to receive the handle <NUM>. The apertures <NUM>-<NUM> and <NUM>-<NUM> may be shaped for a cooperating fit with the ends of the handle <NUM> received therein, such as for a tubular handle <NUM>, the apertures <NUM>-<NUM> and <NUM>-<NUM> may be substantially circular, while for a rectangular, ovular, or otherwise shaped handle ends, the apertures <NUM>-<NUM> and <NUM>-<NUM> may be correspondingly rectangular, ovular or having a shape corresponding to that of the handle ends.

Referring now also to <FIG>, the rod <NUM>, which extends into the cavity <NUM> of the kettlebell body <NUM>, includes engagement members (e.g., pins <NUM>), for coupling the weights <NUM> to the rod <NUM> and thus to the kettlebell body <NUM>. The rod <NUM> and pins <NUM> may operate in a similar manner as those described with reference to <FIG>. For example, the pins <NUM> may extend radially outward from the rod <NUM>. The pins may be implemented as pairs of projections (e.g., triangular, rectangular, or any other suitable geometry) extending in diametrically opposite directions from the rod <NUM>. In some examples, the pins may be continuous transverse rods or any suitable shape (e.g., circular, rectangular, etc.) passing through the rod <NUM>. The pins <NUM> may be configured to engage the underside of a respective weight <NUM> to retain the respective weight in the cavity <NUM>. As with other examples herein, the pins <NUM> may be operatively arranged (e.g., operatively spaced and appropriately oriented) along the length of the rod <NUM> and configured to be accommodated in the seats of the weights <NUM> such that the pins <NUM> can be rotated within the cavities defined by the seats to enable a selection of a desired weight. The pins <NUM> may be implemented in any suitable manner, for example, they may be generally triangular projection as in <FIG>, or projections or rods of any suitable geometry. Like the selector rod <NUM>, rod <NUM> has an inner shaft <NUM> movably coupled to an outer shaft <NUM> of the rod <NUM>. The inner shaft <NUM> is configured to displace along the longitudinal direction of the rod <NUM> (e.g., vertically when the kettlebell <NUM> is positioned upright on a support surface). The inner shaft <NUM> may be downwardly biased, e.g., by one or more springs <NUM> such that the inner shaft <NUM> may function as one in a series of plungers configured to lock and unlock the selector assembly <NUM>. The inner shaft may be implemented using a plurality of shaft portions or as an integrally formed component. The inner shaft <NUM> may define a longitudinal slot configured to receive the selector plate <NUM>. The pins <NUM> may be integrally formed with the inner core of the rod <NUM> (e.g., in this example, implemented as the selector plate <NUM>, which is centrally positioned within the rod <NUM> and which is rigidly coupled to the outer shaft <NUM>). In operation, the outer shaft <NUM> and pins <NUM> remain in a fixed vertical position relative to the body <NUM> when the inner shaft <NUM> moves up and down to unlock and lock, respectively, the selector assembly <NUM>.

The kettlebell <NUM> may be configured to automatically lock and unlock by removal and placement of the kettlebell <NUM> on a support surface (e.g., surface <NUM>). The support surface that supports the kettlebell for automatically unlocking the kettlebell may be provided by a surface of the base <NUM> (e.g., when all of the weights are attached to the kettlebell), by the bottom weight <NUM>-b (e.g., when the bottom weight is not attached to the kettlebell), or in some configurations by another surface (e.g., as in the example in <FIG>). The locking mechanism may be implemented in a similar manner to that described with reference to <FIG>. For example, the locking mechanism of kettlebell <NUM> may include one or more lock members (e.g., cam followers <NUM>) operatively associated with the selector rod and configured to engage the kettlebell body (e.g., such as by engaging a detent provided by the cam <NUM>) to restrict rotation of the rod <NUM> whenever the selector assembly <NUM> is in the locked configuration. Similar to the locking mechanism of kettlebell <NUM>, in this example, the lock members (e.g., cam followers <NUM>) may be non-rotatably coupled to the rod <NUM> and movable (e.g., biased by one or more springs <NUM>) such that the lock member may move into and out of the window <NUM> for respectively unlocking and locking the rod <NUM>.

As shown in the enlarged partial view in <FIG>, the plunger <NUM> in the bottom weight <NUM>-b is actuated upward responsive to the placement of the kettlebell <NUM> on the support surface, in this case on the base <NUM>. The plunger <NUM> is downwardly biased by a spring <NUM>. When the kettlebell <NUM> is removed from the base <NUM> with the bottom weight <NUM>-b attached thereto, the plunger <NUM> shifts down until the shoulder <NUM> of the plunger <NUM> abuts the ledge <NUM> of the plunger cavity, in which position the plunger <NUM> may not extend below the bottom most surface of the bottom weight <NUM>-b. If the kettlebell <NUM> is removed from the base <NUM> without the bottom weight <NUM>-b attached thereto, the bottom weight <NUM>-b may remain in the base <NUM> with the plunger <NUM> deflected upward (against the spring force) such that the top of the plunger protrudes beyond the upward facing surface of the weight <NUM>-b to provide the actuation force for unlocking the kettlebell when the kettlebell <NUM> is next placed on the support surface <NUM>, in this case on the bottom weight. In this case, the bottom weight <NUM>-b provides the support surface <NUM> on which the kettlebell is placed to effect the automatic unlocking of the selector assembly. In yet another example, as shown in <FIG>, the kettlebell may be configured to be automatically unlocked by placement of the kettlebell on the support surface <NUM>, which may be the floor. In this example, the bottom weight <NUM>-b' includes a plunger <NUM>' which is downwardly biased by at least one spring <NUM>. However, in this example, the plunger <NUM>' extends beyond the bottom most surface of the weight <NUM>-b such that whenever the kettlebell is rested on the support surface <NUM> (e.g., the floor), the selector assembly may be automatically unlocked for adjustment due to the plunger <NUM>' shifting upward against the force of the spring <NUM>. When the kettlebell is lifted from the support surface <NUM>, the selector assembly is again automatically locked due to the release of the actuation force on the plunger and the shifting of the plunger <NUM>' downward. To avoid accidental unlocking of the kettlebell during use, the plunger <NUM>' may be downwardly biased by a spring force which is compressible only when the weight greater than that of the bottom weight <NUM>-b.

Further inventive combinations of a weight adjustable kettlebell and system are disclosed in the enumerated paragraphs below:.

The foregoing description has broad application. The discussion of any embodiment is meant only to be explanatory and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples. In other words, while illustrative embodiments of the disclosure have been described in detail herein, the inventive concepts may be otherwise variously embodied and employed, and the appended claims are intended to be construed to include such variations, except as limited by the prior art.

The foregoing discussion has been presented for purposes of illustration and description and is not intended to limit the disclosure to the form or forms disclosed herein. For example, various features of the disclosure are grouped together in one or more aspects, embodiments, or configurations for the purpose of streamlining the disclosure. However, various features of the certain aspects, embodiments, or configurations of the disclosure may be combined in alternate aspects, embodiments, or configurations.

Claim 1:
An adjustable weight kettlebell (<NUM>; <NUM>; <NUM>) configured to selectively removably couple to one or more of a plurality of weights (<NUM>), the kettlebell (<NUM>; <NUM>; <NUM>) comprising:
a kettlebell body (<NUM>; <NUM>; <NUM>) defined by a bottom housing portion (<NUM>-<NUM>; <NUM>-<NUM>), a top housing portion (<NUM>-<NUM>; <NUM>-<NUM>), and a middle housing portion (<NUM>-<NUM>; <NUM>-<NUM>) positioned between the bottom housing portion (<NUM>-<NUM>; <NUM>-<NUM>) and the top housing portion (<NUM>-<NUM>; <NUM>-<NUM>) operatively joined together, and including a cavity (<NUM>; <NUM>; <NUM>), wherein the cavity is configured to non-rotatably accommodate a plurality of weights (<NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>; <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-<NUM>; <NUM>) configured to be supported in a stacked configuration, on a support surface; and
a handle (<NUM>: <NUM>: <NUM>) coupled to the kettlebell body (<NUM>; <NUM>; <NUM>) for grasping by a user during exercise, wherein the handle (<NUM>; <NUM>: <NUM>) extends through the top housing portion (<NUM>-<NUM>; <NUM>-<NUM>) and is joined to the lower housing portion (<NUM>-<NUM>; <NUM>-<NUM>).