# Patent

## Title
Convertible barrel exercise apparatus

## Abstract

A curved, partial barrel shaped body has a bottom surface shaped to rest on a portion of a planar surface such as a pad or a floor and an upper curved surface formed by a first cylindrical surface portion having a first radius of curvature about a first axis and a second cylindrical surface portion having a second radius of curvature about a second axis spaced from and parallel to the first axis. The second radius is different from the first radius of curvature. The first and second surface portions preferably tangentially merge together to form a continuous smooth, curved, upper surface with different curvatures.

## Background
BACKGROUND
1. Field
This disclosure relates to an exercise apparatus and more particularly to a partial barrel apparatus for use in Pilates exercises.
2. General Background
Joseph H. Pilates originally developed the concept of using a wheeled platform carriage connected to a resistance device such as a set of weights in conjunction with a stationary frame to provide a variable resistance against which a user could push with his/her feet or pull with the arms while in a sitting or recumbent position in order to exercise the major muscle groups of the user's trunk, legs and/or arms. He and his wife Clara developed and used various exercise apparatus in their pioneering work that has become generally known as Pilates training. One of the exercise devices that Clara Pilates developed she called a “spine corrector”. This device has the shape of a padded partial segment of a cylindrical barrel that merges into a flat, inclined plane, or step, hence the name “step barrel” as it is commonly known today. A user would sit on the step and lean back over the curved surface of the barrel portion, stretching the user's spine.
Since that time many changes and improvements in the design of step barrels have occurred. Handles have been added on the vertical sides, and simplified versions have been developed, called “Baby Arcs”, which are smaller arc segments formed either of wood or plastic and often covered with a padded upholstery material.
Step barrels, however, have a disadvantage in that they are formed with one fixed radius for the curved surface of the barrel portion. One user may find the curvature of the barrel portion too sharp, while another user may find the curvature of the barrel too shallow. This requires the use of at least two barrels and arcs with different curvatures for different users and thus barrels of different sizes have been developed. However, studio space, and hence storage space is usually limited in most facilities where these devices are used. Accordingly, there is a need for a step barrel exercise apparatus that can accommodate different users without taking up additional space. Also, there is a need for an exercise apparatus that can accommodate a variety of different configurations, depending on the physique of the user, as well as different exercises.
It is with these needs in mind that the apparatus in accordance with the present disclosure has been developed.
SUMMARY
One embodiment of the barrel exercise apparatus in accordance with the present disclosure is a curved, partial barrel shaped body that has a bottom surface shaped to rest on a portion of a planar surface such as a pad or a floor and an upper curved surface formed by a first cylindrical surface portion having a first radius of curvature about a first axis and a second cylindrical surface portion having a second radius of curvature about a second axis spaced from and parallel to the first axis. The second radius is different from the first radius of curvature. The first and second surface portions preferably tangentially merge together to form a continuous smooth, curved, upper surface.
Another embodiment of a barrel exercise apparatus in accordance with the present disclosure is an assembly that includes a planar base such as a non-slip mat, a removable first block shaped body having a bottom surface shaped to rest on the base, a generally flat top surface lying at an acute angle to a plane of the bottom surface of the block shaped body when the first body is positioned on the base, and an upright front edge between the bottom surface and the top surface. The assembly also has a curved second body removably abutting the upright front edge of the first section on the planar base. This second curved, partial barrel shaped body has a bottom surface shaped to rest on at least a portion of the planar base, and an upper curved surface formed by a first cylindrical portion having a first radius of curvature about a first cylinder axis and a second cylindrical portion having a second radius of curvature about a second cylinder axis spaced from and parallel to the first axis. The second radius is different from the first radius of curvature. The first and second surface portions merge together to form a continuous smooth curved generally cylindrical upper surface. The second body may be positioned with either the first portion or the second portion abutting the first body on the base.
The barrel exercise apparatus assembly of this embodiment also preferably includes a removable locating member positioned on the planar base that extends into a complementary shaped curved recess in the bottom surface of the second body. The recess is preferably shaped to receive the removable locating member so that the second body may be properly oriented on the planar base in one of preferably two possible positions. Preferably the curved recess is arcuately curved about an axis parallel to the first and second axes.



DRAWINGS
The above-mentioned features and objects of the present disclosure will become more apparent with reference to the following description taken in conjunction with the accompanying drawings wherein like reference numerals denote like elements and in which:
FIG. 1 is an upper perspective view of the assembled exercise apparatus of the present disclosure.
FIG. 2 is side view of the assembled apparatus shown in FIG. 1.
FIG. 3 is an exploded bottom perspective view of the apparatus shown in FIG. 1.



DETAILED DESCRIPTION
An upper perspective view of one embodiment of an exercise apparatus assembly 100 in accordance with the present disclosure is shown in FIG. 1. The apparatus assembly 100 is based on a partial barrel shaped body 102. This partial barrel shaped body, i.e. partial barrel 102, has a unique shape. It has a uniquely composite upper outer surface 104. The partial barrel 102 preferably rests on a support surface over a small, elongated partially cylindrical locating member 106 preferably placed at or adjacent one end of a support pad 108. The support pad 108, in turn, is designed to rest on a flat support surface such as a floor (not shown).
A removable step block 110 is removably positioned preferably on the pad 108 adjacent one side of the partial barrel 102 as is shown in FIGS. 1 and 2. The barrel 102 and step block 110 may be utilized together on any non-slip surface, such as carpet, without the use of the partial cylindrical locating member 106 on the pad 108. In addition, the partial barrel may be used separately from the step block 110, depending on the exercise being performed. However, use of the pad 108 and locating member 106 beneath the barrel 102 and step 110 is preferred, as together the assembly 100, or the barrel 102 alone, may be placed on any surface such as a hardwood floor without the barrel 102 or step body 110 moving out of position.
The upper outer surface 104 of the partial barrel 102 is formed by two arcuate surfaces 112 and 114 that have different radii 116 and 118 from parallel axes 120 and 122 respectively. The surfaces 112 and 114 preferably tangentially merge together preferably along a top of the surface 104 preferably along a vertical plane through and defined by the axes 120 and 122. The outer surface 104 terminates at a flat bottom surface 124 of the barrel 102. This vertical plane is perpendicular to a plane of the bottom surface 124 as is shown in FIG. 2.
The partial barrel 102 has two opposite, preferably identical, vertical end surfaces 126. Each end surface 126 has a plurality of spaced recesses 128 forming vertical ribs 130 between them each terminating in a curved rim 132 that joins with the outer surface 104. The vertical ribs 130 together with the curved rim 132 form a series of hand grip ledges in each end surface 126 for a user to grasp while performing certain exercises on the partial barrel 102 or, alternatively, on the assembled apparatus 100.
The bottom surface 124 of the partial barrel 102 preferably has an arcuate recess 134 extending along its length having a shape generally complementary to that of the locating member 106. This recess 134 preferably has a curved shape extending parallel to axes 120 and 122 and has a depth such that, when the locating member 106 is placed in the recess 134, the bottom of the locating member 106 lies in a common plane with that of the bottom 124. Thus, when the locating member is placed on the pad 108 as shown in FIGS. 1 and 2, the partial barrel 102 may be positioned as shown, or, reversed to an opposite orientation, such that surface 114 is adjacent the step block 110 rather than the surface portion 112 being adjacent the step block 110.
The step block 110 has a generally flat bottom 136, a slanted top surface 138, and an upright front wall 140 that is designed to be placed adjacent either the portion 112 or portion 114 of the upper surface 104 of the partial barrel 102. Thus generally, step block 110 is a trapezoidal block with preferably rounded corners above the flat bottom 136.
The partial barrel 102 and the step block 110 are shown inverted in the exploded view of the assembly 100 in FIG. 3. One or more of the component bodies 102, 106, 108, and 110 that make up the assembly 100 may be provided with complementary hook and loop fabric patches, strips or regions 142 and 144 on the mating surfaces so that, when the block 110 and locating member 108 are positioned on the pad 108, the block 110 and locating member 106 are removably held in place. Additionally strips 142 and 144 may optionally be provided on the upper surface of the locating member 106 and in corresponding portions of the recess 134 to hold the locating member 106 and partial barrel 102 together.
The step block 110 and the partial barrel 102 are each preferably injection molded or blow-molded from a suitable thermoplastic material. As can readily be seen in FIG. 3, both the step block 110 and the partial barrel 102 have an array of internal void spaces or recesses 146 forming intersecting ribs 148. These ribs 148 provide structural support for the upper surfaces and side walls of the block 110 and partial barrel 102 while the voids may be required for uniform cooling during injection molding of each of the bodies 110 and 102. Although not shown, similar voids may be formed in the locating member 106. Preferably each of the components of the assembled exercise apparatus 100 is made of a lightweight plastic material.
The apparatus 100 may be constructed other than as specifically shown. For example, the upright side of the step block 110 and lateral edges of the partial barrel 102 may have hook and loop fabric adhered to their surfaces such that the step block 110 may be removably fastened together with the partial barrel 102. The entire underside surfaces of the step block 110, the partial barrel 102 and the locating member 106 may covered in fastener material 142 while the upper surface of the pad 108 is entirely covered in mating fastener material 144 rather than utilizing strips and patches as illustrated. Other removable adhesive materials may be used, or the mating surfaces provided simply with non-slip material on the edges and surfaces to minimize shifting of the bodies during use.
Alternatively, the locating member 106 may have a different cross sectional shape than the arcuate shape as shown. The locating member 106 may have a rectangular, triangular, trapezoidal or other polygonal cross sectional shape, for example. In addition, the locating member 106 may be integrally formed on the pad 108 rather than as a separate body.
The end surfaces 126 of the partial barrel 102 are shown as having four recesses 128 and thus three ribs 130. Depending on the overall width of the partial barrel 102, additional, or fewer ribs may be provided. Preferably the ribs should be between 3-4 inches apart.
The locating member 106 may optionally be formed of a flexible resilient material that serves a dual function: that of a location member as above described, and as an integral head support for a user using the base mat 108 as a Pilates exercise mat without the partial barrel 102 and step block 110 in place. Accordingly, the base 108 may be a full size mat, typically about six feet in length, or may be a short mat as shown in the Figures and described above.
The simplest version of the partial barrel 102 is simply a curved plastic body having the composite upper surface 104 as above described. Such a simple version may be formed of a single sheet of rigid plastic that may or may not require a supporting rib beneath the upper surface 104, but will have two surface portions 112 and 114 as above described with different radii of curvature.
While the apparatus has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the disclosure need not be limited to the disclosed embodiments. It is intended to cover various modifications and similar arrangements included within the spirit and scope of the claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures. The present disclosure includes any and all embodiments of the following claims.

## Claims

1. An exercise device comprising:
a curved partial cylindrical barrel shaped body having a bottom surface, a curved upper surface, a first end face, and a second end face, said bottom surface shaped to rest on a support surface, said upper curved surface including a first cylindrical surface portion merging with a second cylindrical surface portion forming a continuous smooth curved surface, the first surface portion having a first radius of curvature about a first axis, the second surface portion having a second radius of curvature about a second axis parallel to the first axis, wherein the first radius of curvature is different from the second radius of curvature and the first and second axes define a plane passing through the first and second cylindrical surface portions at a location where the first and second surface portions merge together, wherein the first end face and the second end face each has a plurality of parallel spaced recesses extending perpendicular to the bottom surface defining a plurality of vertical ribs therebetween.

2. The device of claim 1 wherein the plane is vertical when the body is positioned on a horizontal surface.

3. The device of claim 1 wherein each end face of the body each has a curved rim joining the end face to the upper curved surface of the body.

4. An exercise apparatus comprising:
a planar base;
a removable step block having a bottom surface shaped to rest on the base, a generally flat top surface lying at an acute angle to the bottom surface when the step block is positioned on the base, and having an upright front edge between the bottom surface and the top surface; and
a curved partial cylindrical barrel shaped body having a flat bottom surface, a curved upper surface, a first end face, and a second end face, said bottom surface shaped to rest on the base, said upper curved surface including a first cylindrical surface portion merging with a second cylindrical surface portion forming a continuous smooth curved surface, the first surface portion having a first radius of curvature about a first axis, the second surface portion having a second radius of curvature about a second axis parallel to the first axis, wherein the first radius of curvature is different from the second radius of curvature and the first and second axes together define a plane passing through the first and second cylindrical surface portions at a location where the first and second surface portions merge together, wherein the first end face and the second end face each has a plurality of parallel spaced recesses extending perpendicular to the bottom surface defining a plurality of vertical ribs therebetween.

5. The device of claim 4 wherein each end face of the body each has a curved rim joining the end face to the upper curved surface of the body.

6. The apparatus of claim 4 further comprising a locating member on the planar base and wherein the bottom of the partial barrel body has a recess shaped complementary to the locating member such that the partial barrel body may be positioned in two different orientations on the locating member.

7. The apparatus of claim 6 wherein the locating member has a third radius of curvature about a third axis parallel to the first and second axes.

8. The apparatus of claim 6 wherein the locating member is removable.