Patent Description:
Surface treatment apparatuses may include vacuum cleaners configured to suction debris from a surface (e.g., a floor). The vacuum cleaner may include a surface cleaning head having one or more brush rolls configured to agitate a surface (e.g., a carpet) to urge debris into an airflow generated by the vacuum cleaner. The debris within the airflow may then be deposited in a debris collector for later disposal. <CIT> disclosed an upright surface treating appliance including a main body and a stand pivotable relative to the main body between a supporting position and a retracted position. A stand retaining mechanism is provided for releasably retaining the stand in the supporting position, and which includes a locking member pivotably moveable about a first axis to release the stand as it is moved from the supporting position to the retracted position, and about a second axis spaced from the first axis to retain the stand as it is returned to the supporting position. <CIT> discloses an upright vacuum cleaner having a nozzle and a support moveable between a projected state and a retracted state. The support, in its projected state, is adapted to support the vacuum cleaner in a self-standing position. The support is mounted to the nozzle and projects from the nozzle in its projected state. <CIT> discloses a floor surface washing cleaner in which an auxiliary plate is fitted to a brush case fitted with an operation handle rotatable with respect to the floor surface and an extensible damper is fitted between the operation handle and the auxiliary plate. <CIT> discloses a surface treating appliance including a device generating a flow of fluid in the form of a motor and a fan, housed in a main body. A hose and wand assembly, a surface treating head and a rotary change over valve are also provided. The valve is selectively rotatable to allow fluid flow from either the surface-treating head or the hose. A support assembly is moveable between a supporting position in which it supports the main body and a retracted position. The change over valve and support assembly are arranged so that motion of the support assembly between the supporting and retracted positions induces rotary motion of the change over valve. <CIT> discloses a surface-treating appliance including a main body, a surface-treating head and a stand. The stand is located on a rear portion of the appliance and is moveable between a supporting position in which is supports the main body in an upright position and a stored position. The stand is moveable between the supporting and stored positions in response to movement of the main body between its upright position and an inclined position.

In accordance with the invention there is provided a surface cleaning head and a vacuum cleaner according to the appended claims.

These and other features and advantages will be better understood by reading the following detailed description, taken together with the drawings, wherein:.

The present disclosure is generally directed to a surface treatment apparatus having an upright portion and a surface cleaning head pivotally coupled to the upright portion. The upright portion is transitionable between an in-use position and a storage position by pivoting the upright portion relative to the surface cleaning head. The surface cleaning head includes at least one stabilizer configured to transition from an extended position to a retracted position in response to, for example, transitioning the upright portion between the storage position and the in-use position. The stabilizer may improve the stability of the surface treatment apparatus when, for example, the surface treatment apparatus is not in-use without substantially interfering with the usage of the surface treatment apparatus. This may prevent the surface treatment apparatus from inadvertently tipping over and causing damage to, for example, itself, other objects, an animal, and/or a person.

<FIG> shows a schematic view of a vacuum cleaner <NUM> including a surface cleaning head <NUM> having one or more wheels <NUM> rotatably coupled thereto, an upright section <NUM>, a dust cup <NUM>, and a suction motor <NUM>. The suction motor <NUM> is configured generate an airflow into an inlet <NUM> of the surface cleaning head <NUM> such that debris can be suctioned from a surface to be cleaned (e.g., a floor). At least a portion of debris that is entrained within the airflow is deposited in the dust cup <NUM> for later disposal by a user of the vacuum cleaner <NUM>. After passing through the dust cup <NUM>, the airflow is exhausted from the suction motor <NUM> at an exhaust outlet <NUM>. The suction motor <NUM> can be powered by, for example, one or more batteries and/or an electrical grid.

As shown in <FIG>, the upright section <NUM> is in a storage (or upright) position. The upright section <NUM> is pivotally coupled to a main body <NUM> of the surface cleaning head <NUM> such that the upright section <NUM> can be pivoted to an in-use (or reclined) position (e.g., as shown <FIG>). An axis about which the upright section <NUM> pivots when transitioning between the storage and in-use positions can extend substantially parallel to an axis about which the one or more wheels <NUM> rotate.

One or more stabilizers <NUM> can be provided that are configured to transition between an extended (e.g., as shown in <FIG>) and retracted (e.g., as shown in <FIG>) position in response to, for example, the upright section <NUM> transitioning between the storage and in-use positions and/or in response to a user interaction. The stabilizer <NUM> can be configured to extend from the vacuum cleaner <NUM> and engage (e.g., contact) a surface (e.g., a floor) when the upright section <NUM> is in the storage position. Such a configuration may improve the stability of the vacuum cleaner <NUM> when compared to a vacuum cleaner <NUM> that does not include the stabilizer <NUM>.

As the upright section <NUM> is pivoted towards the in-use position, the stabilizer <NUM> can move towards the retracted position for at least a portion of the pivotal movement such that the stabilizer <NUM> does not substantially interfere with the use of the vacuum cleaner <NUM>. As such, the surface cleaning head <NUM> can be moved across a surface to be cleaned (e.g., a floor) without the stabilizer <NUM> engaging (e.g., contacting) the surface to be cleaned. In other words, the stability of the vacuum cleaner <NUM> can be improved without substantially interfering with the maneuverability of the vacuum cleaner <NUM>.

<FIG> shows a perspective view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a neck <NUM> pivotally coupled to a main body <NUM> of the surface cleaning head <NUM>. The neck <NUM> is configured to receive a wand <NUM> such that the neck <NUM> and the wand <NUM> can be described as collectively forming at least a portion of an upright section of a vacuum cleaner such as, for example, the vacuum cleaner <NUM> of <FIG>. As also shown, the surface cleaning head <NUM> can include one or more main wheels <NUM> that are configured to rotate about a rotation axis <NUM> in response to the surface cleaning head <NUM> being urged across a surface to be cleaned <NUM> (e.g., a floor).

The neck <NUM> can be configured to pivot about one or more axes. For example, the neck <NUM> can be configured to pivot about a first pivot axis <NUM> that extends substantially parallel to the rotation axis <NUM> of the one or more wheels <NUM>. As such, the neck <NUM> and the wand <NUM> can be transitioned between a storage position (e.g., as shown in <FIG>) and an in-use position (e.g., as shown in <FIG>) in response to pivoting about the first pivot axis <NUM>. Additionally, or alternatively, the neck <NUM> can be configured to pivot side-to-side about a second pivot axis <NUM> that extends transverse to (e.g., perpendicular to) the rotation axis <NUM> of the one or more wheels <NUM>. Such a configuration may allow the surface cleaning head <NUM> to be more easily maneuvered.

The wand <NUM> can define a fluid channel <NUM> such that air drawn into the surface cleaning head <NUM> through an air inlet <NUM> can pass through the wand <NUM>. In other words, the wand <NUM> can be fluidly coupled to the surface cleaning head <NUM>. In some instances, the wand <NUM> can be removably coupled to the neck <NUM> such that the wand <NUM> can be used independently of the surface cleaning head <NUM> (e.g., the wand <NUM> may be configured to couple to a surface cleaning accessory).

As shown, the surface cleaning head <NUM> includes at least one stabilizer <NUM> configured to transition between an extended position (e.g., as shown in <FIG>) in which the stabilizer <NUM> engages (e.g., contacts) the surface to be cleaned <NUM> and a retracted position (e.g., as shown in <FIG>) in which the stabilizer <NUM> is configured to be disengaged from the surface to be cleaned <NUM>. The stabilizer <NUM> is configured to transition between the extended position and the retracted position in response to the neck <NUM> being pivoted between the storage position and the in-use position.

When the neck <NUM> is transitioned from the storage position towards the in-use position, the stabilizer <NUM> can transition from the extended position to the retracted position. As such, the stabilizer <NUM> should not substantially interfere with the movement of the surface cleaning head <NUM> across a surface to be cleaned <NUM> when the neck <NUM> is in the in-use position. By way of further example, when the neck <NUM> is transitioned from the in-use position to the storage position, the stabilizer <NUM> can transition from the retracted position to the extended position. As such, when the neck <NUM> is in the storage position, the stabilizers <NUM> can improve the stability of the surface cleaning head <NUM> such that, for example, it is less likely to tip over.

In some instances, the stabilizer <NUM> can include one or more wheels coupled thereto (e.g., the at least one wheel <NUM> and/or an additional wheel). For example, when the stabilizer <NUM> is in the extended position, the one or more wheels can be configured to engage (e.g., contact) the surface to be cleaned <NUM> such that the wheels can rollingly engage the surface to be cleaned <NUM>.

In some instances, the stabilizer <NUM> can be configured to extend or retract for only a portion of the pivotal movement of the neck <NUM>. For example, the stabilizer <NUM> can begin to extend when the neck <NUM> is being transitioned towards the storage position and when the neck <NUM> is within a predetermined number of degrees (e.g., <NUM>°, <NUM>°, <NUM>°, <NUM>°, <NUM>°, and/or any other suitable number of degrees) of the storage position. In other words, the stabilizer <NUM> can be configured to transition between extended and retracted positions in response to the neck <NUM> pivoting within a predetermined range.

As shown, when the stabilizer <NUM> is in the extended position, the stabilizer <NUM> extends behind the one or more wheels <NUM> such that the one or more wheels <NUM> are disposed between at least a portion of the stabilizer <NUM> and the air inlet <NUM> of the surface cleaning head <NUM>. Additionally, or alternatively, when the stabilizer <NUM> is in the extended position, the wand <NUM> can be positioned between the main body <NUM> of the surface cleaning head <NUM> and a distal most portion of the stabilizer <NUM> (e.g., a portion of the stabilizer <NUM> configured to engage the surface to be cleaned <NUM>).

When the stabilizer <NUM> is in the retracted position, at least a portion of the stabilizer <NUM> can transition into a cavity defined within the main body <NUM> of the surface cleaning head <NUM> such that the one or more wheels <NUM> are disposed between the surface to be cleaned <NUM> and at least a portion of the stabilizer <NUM>.

As also shown, in some instances, a plurality of stabilizers <NUM> can be provided. In these instances, a longitudinal axis <NUM> of each stabilizer <NUM> extends transverse to a forward movement direction <NUM> of the surface cleaning head <NUM>. In other words, the longitudinal axes <NUM> extend transverse to each other. As a result, a separation distance <NUM> extending between the stabilizers <NUM> increases as the stabilizers <NUM> approach the surface to be cleaned <NUM> such that the stability of the surface cleaning head <NUM> may be improved. In other instances, the longitudinal axes <NUM> can extend parallel to each other and/or the forward movement direction <NUM>.

<FIG> shows a perspective view of an example of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG> having a portion of a top cover removed therefrom for purposes of illustration. As shown, a main body <NUM> of the surface cleaning head <NUM> defines a cavity <NUM> for receiving at least a portion of the stabilizer <NUM>. The stabilizer <NUM> can be configured to slideably engage the cavity <NUM> such that, in response to transitioning the neck <NUM> between the storage position and the in-use position, the stabilizer <NUM> slides within the cavity <NUM>.

For example, the surface cleaning head <NUM> may include a protrusion <NUM> (shown in hidden lines) configured to urge the stabilizer <NUM> between the extended and retracted position. For example, the protrusion <NUM> can extend from the neck <NUM>. The protrusion <NUM> can be configured to rotate in response to transitioning the neck <NUM> between the storage and in-use positions. As shown in <FIG>, the protrusion <NUM> can be coupled to a linkage <NUM> that is configured to engage (e.g., contact) the stabilizer <NUM>. The linkage <NUM> can be pivotally coupled to the protrusion <NUM> such that, as the protrusion <NUM> is rotated in response to the transitioning of the neck <NUM> between the in-use and storage positions, the linkage <NUM> urges the stabilizer <NUM> to transition between the retracted and extended positions. As shown, the linkage <NUM> can include a pivot arm <NUM> and a plunger <NUM> slidably disposed therein such that, as the linkage <NUM> pivots, the plunger <NUM> slides within the pivot arm <NUM>. In some instances, a biasing mechanism (e.g., a spring) can be provided to urge the plunger <NUM> into engagement with the stabilizer <NUM>.

As also shown in <FIG>, the stabilizer <NUM> can include a rib <NUM> that is configured to retain the stabilizer <NUM> in the extended position until the neck <NUM> is transitioned towards the storage position. For example, the rib <NUM> can be configured to engage (e.g., contact) a detent.

<FIG> show multiple views of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the stabilizer <NUM> can include a plurality of teeth <NUM> configured to engage a corresponding gear such that a rack and pinion is formed. For example, the plurality of teeth <NUM> can be configured to engage a gear that rotates in response to the neck <NUM> transitioning between a storage and an in-use position.

<FIG> shows an example of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a neck <NUM> pivotally coupled to a main body <NUM> of the surface cleaning head <NUM>. The neck <NUM> can be configured to pivot relative to the main body <NUM> of the surface cleaning head <NUM> about one or more axes. For example, the neck <NUM> can be configured to pivot between an upright position (e.g., as shown in <FIG>) and an in-use position (e.g., as shown in <FIG>). In some instances, the neck <NUM> can also be configured to pivot side-to-side.

As shown, the neck <NUM> includes one or more stabilizers <NUM> configured to transition between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>). As the neck <NUM> is transitioned from the storage position towards the in-use position, at least a portion of the stabilizer <NUM> is configured to move towards the main body <NUM> of the surface cleaning head <NUM>. As the stabilizer <NUM> moves towards the main body <NUM> of the surface cleaning head <NUM>, a portion of the stabilizer <NUM> slides within a slot <NUM> formed within the neck <NUM>, wherein the slot <NUM> extends longitudinally along the neck <NUM>. As such, when transitioning to the retracted position, at least a portion of the stabilizer <NUM> moves in a direction of the main body <NUM> and at least a portion of the stabilizer moves away from the main body <NUM> such that the stabilizer <NUM> comes out of engagement with a surface to be cleaned (e.g., a floor).

A pivot arm <NUM> can also be provided to constrain the extension distance of the stabilizer <NUM>. The pivot arm <NUM> can be pivotally coupled to the stabilizer <NUM> and to the neck <NUM> or the main body <NUM> of the surface cleaning head <NUM>. As such, as the stabilizer <NUM> slides along the slot <NUM>, the pivot arm <NUM> pivots relative to the stabilizer <NUM> and the neck <NUM> or the main body <NUM>.

<FIG> is a perspective view of the surface cleaning head <NUM> of <FIG>. As shown, the neck <NUM> can include a plurality of stabilizers <NUM> configured to extend therefrom. As shown, a longitudinal axis <NUM> of each of the stabilizers <NUM> can extend transverse to a forward direction of travel <NUM>. In other words, the longitudinal axes <NUM> can extend transverse to each other. As such, a separation distance <NUM> extending between the stabilizers <NUM> can increase as the stabilizers <NUM> extend in a direction away from the main body <NUM> of the surface cleaning head <NUM>. Such a configuration may increase the stability of the surface cleaning head <NUM>. In other instances, the longitudinal axes <NUM> can extend parallel to each other.

<FIG> shows a perspective view of the neck <NUM> of <FIG> having the stabilizers <NUM> in the retracted position and <FIG> shows a perspective view of the neck <NUM> having the stabilizers <NUM> in the extended position. <FIG> shows a side view of the surface cleaning head <NUM> having the neck <NUM> in an in-use position.

<FIG> shows a perspective view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a neck <NUM> pivotally coupled to a main body <NUM> of the surface cleaning head <NUM>. The neck <NUM> is configured to pivot between a storage and an in-use position. In some instances, the neck <NUM> can also be configured to pivot side-to-side.

One or more stabilizers <NUM> are coupled to the neck <NUM> and configured to transition between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>). For example, the stabilizers <NUM> can be configured to transition from the retracted position to the extended position in response to actuation of a lever <NUM>. The lever <NUM> can be configured to be actuated by a user (e.g., in response to a user depressing the lever <NUM> using a foot). By way of further example, the one or more stabilizers <NUM> can be configured to transition from the extended position to the retracted position in response to a subsequent actuation of the lever <NUM>. For example, the stabilizers <NUM> can be configured such that a subsequent actuation of the lever <NUM> causes a biasing mechanism (e.g., a spring) to urge the stabilizers <NUM> towards the retracted position. By allowing a user to determine when to extend the one or more stabilizers <NUM>, it may allow the user to more easily maneuver the vacuum cleaner when, for example, the neck <NUM> is in the storage position. Additionally, or alternatively, the stabilizers <NUM> can be configured to transition from the extended position to the retracted position in response to transitioning the neck <NUM> from a storage position towards an in-use position.

As also shown, when transitioning between the extended and retracted position, the stabilizer <NUM> slides within a slot <NUM> formed within the neck <NUM>. A pivot arm <NUM> may also be pivotally coupled to the stabilizer <NUM> and the neck <NUM> or the main body <NUM> of the surface cleaning head <NUM>. The pivot arm <NUM> limits the distance that the stabilizer <NUM> can extend from the main body <NUM> of the surface cleaning head <NUM>.

In some instances, and as shown, a plurality of stabilizers <NUM> can be coupled to the neck <NUM>. A longitudinal axis <NUM> of each stabilizer <NUM> can extend transverse to a forward movement direction <NUM> of the surface cleaning head <NUM>. In other words, the longitudinal axes <NUM> can extend transverse to each other. In other instances, the longitudinal axes <NUM> can extend parallel to each other.

In some instances, the stabilizers <NUM> and lever <NUM> may be part of a stabilizer assembly that is removably coupled to the neck <NUM>. As such, the stabilizer assembly can be installed by a user of the vacuum cleaner.

<FIG> shows a perspective view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a neck <NUM> pivotally coupled to a main body <NUM> of the surface cleaning head <NUM>. The neck <NUM> can be configured to pivot side-to-side and between a storage position (e.g., as shown in <FIG>) and an in-use position (e.g., as shown in <FIG>).

As shown in <FIG>, when the neck <NUM> is in the storage position, a stabilizer <NUM> is configured to extend from the main body <NUM> of the surface cleaning head <NUM>. The stabilizer <NUM> can be configured such that it transitions to an extended position (e.g., as shown in <FIG>) when the neck <NUM> transitions to the storage position. For example, the stabilizer <NUM> can include a biasing mechanism that urges the stabilizer <NUM> towards the extended position. As such, when the neck <NUM> transitions to the storage position, the neck <NUM> may cause a latch to be released such that the stabilizer <NUM> extends.

As also shown, the stabilizer <NUM> includes a plurality of telescoping parts <NUM>, wherein at least one of the telescoping parts <NUM> is configured to receive at least one other telescoping part <NUM>. A distal most telescoping part <NUM> can include a support <NUM> extending therefrom. The support <NUM> can extend from the distal most telescoping part <NUM> at an angle such that the support <NUM> extends substantially parallel to a surface on which the surface cleaning head <NUM> rests (e.g., a floor).

The stabilizer <NUM> may transition from the extended position to a retracted position (e.g., as shown in <FIG>) in response to a user exerting a force on the telescoping parts <NUM> such that one or more of the telescoping parts <NUM> are received within at least one other telescoping part <NUM>. In some instances, the stabilizer <NUM> may be transitioned from the extended position to the retracted position in response to the neck <NUM> being transitioned from the in-use position to the storage position.

<FIG> shows a perspective view of the stabilizer <NUM> in the extended position and <FIG> shows a perspective view of the stabilizer <NUM> in the retracted position. As shown, the stabilizer <NUM> can include a first plurality of telescoping parts <NUM> and a second plurality of telescoping parts <NUM>. The first and second plurality of telescoping parts <NUM> and <NUM> are disposed on opposing sides of the surface cleaning head <NUM>. For example, the neck <NUM> and one or more wheels <NUM> can be disposed between at least a portion of the first and second plurality of telescoping parts <NUM> and <NUM>.

As shown, the support <NUM> can extend between the first and second plurality of telescoping parts <NUM> and <NUM>. To transition the stabilizer <NUM> from the extended position to the retracted position, a user may exert a force on the support <NUM> (e.g., using a foot). For example, a user may, while causing the neck <NUM> to be transitioned into an in-use position, transition the stabilizer <NUM> into the retracted position.

As shown, the surface cleaning head <NUM> can include a stabilizer <NUM> configured to transition between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>). The stabilizer <NUM> can transition between the extended and retracted positions in response to, for example, the transitioning of the neck <NUM> between the storage and in-use positions.

The stabilizer <NUM> can be coupled to one or more wheels <NUM>. As such, when the stabilizer <NUM> transitions between the extended and retracted positions, the stabilizer <NUM> urges the one or more wheels <NUM> between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>). When in the retracted position, the one or more wheels <NUM> can be used to maneuver the surface cleaning head <NUM> over a surface (e.g., a floor) during a cleaning operation. When in the extended position, the one or more wheels <NUM> may improve the stability of the surface cleaning head <NUM> when the neck <NUM> is in the storage position while still allowing the surface cleaning head <NUM> to be maneuvered over the surface using the one or more wheels <NUM> (e.g., as shown in <FIG>).

As shown, the stabilizer <NUM> can be configured to slideably engage a track <NUM> defined in at least a portion of the main body <NUM> of the surface cleaning head <NUM>. Additionally, or alternatively, the track <NUM> can be defined in at least a portion of the neck <NUM>. In some instances, and as shown, the track <NUM> can be configured to extend beyond a rearward most portion of the one or more wheels <NUM> when the one or more wheels <NUM> are in the retracted position. In other words, when in the retracted position, the one or more wheels <NUM> can be disposed between the main body <NUM> of the surface cleaning head <NUM> and a distal most portion of the track <NUM>. In other instances, the track <NUM> may be defined within the main body <NUM> such that the track does not extend beyond the one or more wheels <NUM> when the one or more wheels <NUM> are in the retracted position.

<FIG> shows a schematic view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a plurality of stabilizers <NUM> configured to rotate about a rotation axis <NUM>. In some instances, the rotation axis <NUM> may be the axis about which one or more wheels <NUM> rotatably coupled to a main body <NUM> of the surface cleaning head <NUM> rotate. When in the extended position (e.g., as shown in <FIG>) the one or more wheels <NUM> are disposed between at least a portion of the stabilizers <NUM> and the main body <NUM> of the surface cleaning head <NUM>. When in the retracted position, the stabilizers <NUM> are received within a corresponding receptacle <NUM> defined within the main body <NUM> of the surface cleaning head <NUM>.

While the stabilizers <NUM> are shown as having an "L" shape, other configurations are possible. For example, the stabilizers <NUM> may have a "J" shape, a "P" shape, a "T" shape, and/or any other suitable shape. In some instances, the stabilizers <NUM> may be substantially straight and may not include a portion that is configured to extend behind the one or more wheels <NUM>.

In some instances, the stabilizers <NUM> may be coupled together such that the stabilizers <NUM> collectively form a "U" shaped stabilizer. In these instances, the "U" shaped stabilizer maybe configured such that is extends between the wheels <NUM> or such that the wheels <NUM> are disposed within the area defined within the "U" shaped stabilizer.

<FIG> show perspective side views of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a main body <NUM>, a neck <NUM> that is pivotally coupled to the main body <NUM> and that is configured to receive a wand (e.g., the wand <NUM> of <FIG>), a plurality of main wheels <NUM> (e.g., wheels used to maneuver the surface cleaning head <NUM> during use while cleaning) rotatably coupled to the main body <NUM>, and a plurality of stabilizers <NUM> configured to transition between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>). The stabilizers <NUM> can each include a respective stabilizer wheel <NUM>. When in the extended position, a substantial portion of the stabilizer wheels <NUM> (e.g., at least <NUM>% of a diameter of the stabilizer wheels <NUM>) can extend beyond a rearmost surface <NUM> of the main body <NUM> and, when in the retracted position, the stabilizer wheels <NUM> can extend substantially between the rearmost surface <NUM> and a forwardmost surface <NUM> of the neck <NUM> (e.g., a measure of a length of the stabilizer wheel <NUM> extending beyond a respective surface measures less than <NUM>% of a diameter of the stabilizer wheels <NUM>).

As shown, the stabilizers <NUM> extend from a respective stabilizer opening <NUM> defined in the main body <NUM>. Each stabilizer opening <NUM> can be configured to be angled in a direction of a surface to be cleaned <NUM> and may be defined in the main body <NUM> at a location between a top surface <NUM> of the main body <NUM> and a respective main wheel <NUM>. As such, at least a portion of each stabilizer <NUM> can extend over at least a portion of a respective main wheel <NUM>. In some instances, the stabilizer opening <NUM> can be defined in the main body <NUM> such that at least a portion is disposed on opposing sides of a central longitudinal axis <NUM> of the neck <NUM>.

When the stabilizers <NUM> transition to the extended position, the stabilizer wheels <NUM> transition into engagement (e.g., contact) with the surface to be cleaned <NUM>. When the stabilizers <NUM> transition to the retracted position, the stabilizer wheels <NUM> transition out of engagement (e.g., contact) with the surface to be cleaned <NUM>. As such, in some instances, the stabilizers <NUM> can extend from the main body <NUM> at an angle and in a direction of the surface to be cleaned <NUM> such that the stabilizer wheels <NUM> transition into and out of engagement with the surface to be cleaned <NUM>.

As shown in <FIG>, the stabilizers <NUM> extend outwardly from the main body <NUM> along respective extension axes <NUM> and <NUM>. The first extension axis <NUM> extends transverse to the second extension axis <NUM>. As such, a stabilizer width <NUM> increases with increasing distance from the main body <NUM>. In other words, a separation distance <NUM> extending between the stabilizers <NUM> increases with increasing distance from the main body <NUM>. As shown, the stabilizer width <NUM> extends between outermost surfaces of the stabilizer wheels <NUM>. In some instances, for example, when the stabilizers <NUM> are in the extended position, the stabilizer width <NUM> may measure substantially equal to a surface cleaning head width <NUM>. When transitioned to the retracted position, as shown in <FIG>, the stabilizer width <NUM> may, for example, measure less than the surface cleaning head width <NUM>.

<FIG> shows an exploded perspective view of a portion of the surface cleaning head <NUM>, wherein the stabilizers <NUM> are in the extended position. As shown, each stabilizer <NUM> is configured to be urged between the extended and retracted position in response to the neck <NUM> engaging a linkage <NUM>. The linkage <NUM> can be pivotally coupled to a portion of the main body <NUM> of the surface cleaning head <NUM> and the neck <NUM> can include a protrusion <NUM> configured to engage at least a portion of the linkage <NUM>. The engagement between the protrusion <NUM> and the linkage <NUM> causes the linkage <NUM> to pivot relative to the main body <NUM> in response to pivotal movement of the neck <NUM>.

As the linkage <NUM> pivots between a first pivot position and a second pivot position, the stabilizer <NUM> is caused to transition between the extended and retracted position. In other words, each linkage <NUM> is configured to cause a respective stabilizer <NUM> to transition between the extended and retracted positions in response to the pivotal movement of the neck <NUM>. As such, the linkage <NUM> can be configured to resist pivotal movement when the linkage <NUM> is in the first pivot position and/or the second pivot position such that the stabilizers <NUM> are maintained in a respective one of the extended or retracted positions. For example, when the stabilizers <NUM> are in the extended position and the linkage is in the first pivot position, the linkage <NUM> may be configured to engage and/or form a portion of a mechanical locking mechanism (e.g., a detent, a snap fit, a friction fit, and/or any other mechanical locking mechanism) and, when the stabilizers <NUM> are in the retracted position and the linkage <NUM> is in the second pivot position, the linkage <NUM> may be biased to the second pivot position by a biasing mechanism (e.g., a spring, an elastic material, such as a rubber, and/or any other biasing mechanism). Such a configuration may allow the stabilizers <NUM> to be urged into the retracted position by the biasing force exerted on the linkage <NUM> by the biasing mechanism. By way of further example, the linkage <NUM> may be retained in the first and second pivot positions using a mechanical locking mechanism.

The protrusion <NUM> can extend from the neck <NUM> and engage a recess <NUM> defined in the linkage <NUM>. The recess <NUM> can be defined in an outer surface <NUM> of a pivot arm <NUM> of the linkage <NUM>. As the neck <NUM> pivots between a storage and in-use position, the protrusion <NUM> engages at least a portion of the recess <NUM> such that at least a portion of the linkage <NUM> is caused to pivot in a direction opposite that of the neck <NUM>.

<FIG> shows a perspective view of the linkage <NUM> of <FIG>. As shown, the pivot arm <NUM> defines a channel <NUM> configured to slideably receive a plunger <NUM>. As the linkage <NUM> pivots in response to the neck <NUM> transitioning between the storage and in-use positions, the plunger <NUM> slides within the channel <NUM>. As also shown, the recess <NUM> can have a generally arcuate shape. Additionally, or alternatively, at least a portion of the recess <NUM> can be tapered.

As shown, the plunger <NUM> can define a plunger opening <NUM>. The plunger opening <NUM> can be configured to receive a shaft therethrough such that the shaft rotates relative to the plunger opening <NUM>. For example, the plunger <NUM> can be pivotally coupled to a respective stabilizer <NUM> using a shaft that extends through the stabilizer <NUM> and the plunger opening <NUM>. As such, the linkage <NUM> can generally be described as being pivotally coupled to the stabilizer <NUM>. In some instances, the plunger opening <NUM> can include a bearing to facilitate rotation of the shaft relative to the plunger opening <NUM>.

As also shown, the pivot arm <NUM> can include a pivot arm opening <NUM>. The pivot arm opening <NUM> can be configured to receive a shaft therethrough such that the shaft rotates relative to the pivot arm opening <NUM>. For example, the pivot arm <NUM> can be coupled to the main body <NUM> of the surface cleaning head <NUM> using a shaft that extends from the main body <NUM> such that the pivot arm <NUM> can be pivotally coupled to the main body <NUM> of the surface cleaning head <NUM>. As such, the linkage <NUM> can generally be described as being pivotally coupled to the main body <NUM> and the stabilizer <NUM>. In some instances, the pivot arm opening <NUM> can include a bearing to facilitate rotation of the shaft relative to the pivot arm opening <NUM>.

The pivot arm <NUM> can also include a rib <NUM> that extends proximate to and radially outward from the pivot arm opening <NUM>. As shown, the rib <NUM> extends between a boss <NUM> that extends around the pivot arm opening <NUM> and the recess <NUM>. The rib <NUM> can be configured to engage one or more detents configured to retain the linkage in the first and/or second pivot positions.

<FIG> show a perspective view of the stabilizer <NUM> and a linkage <NUM> coupled thereto. As shown, the linkage <NUM> is pivotally coupled to the stabilizer <NUM>. For example, the plunger <NUM> can be pivotally coupled to the stabilizer <NUM>. As also shown, an extension distance <NUM> of the plunger <NUM> may increase as the stabilizer <NUM> transitions from the extended position (e.g., as shown in <FIG>) to the retracted position (e.g., as shown in <FIG>).

<FIG> shows a perspective view of the stabilizer <NUM>. As shown, the stabilizer <NUM> includes a stabilizer body <NUM> pivotally coupled to the stabilizer wheel <NUM>. The stabilizer body <NUM> includes a longitudinal portion <NUM> that extends along a stabilizer longitudinal axis <NUM> of the stabilizer <NUM> and a wheel coupling portion <NUM> that extends in a direction transverse to the stabilizer longitudinal axis <NUM>. In some instances, the longitudinal portion <NUM> can have an arcuate shape, wherein the concave portion of the arc faces the surface to be cleaned <NUM>.

The wheel coupling portion <NUM> includes a wheel receptacle <NUM> configured to receive at least a portion of the stabilizer wheel <NUM>. As shown, the wheel receptacle <NUM> extends at least partially around the stabilizer wheel <NUM> and is vertically spaced apart from the longitudinal portion <NUM> of the stabilizer body <NUM>. The stabilizer wheel <NUM> is rotatably coupled to the wheel receptacle <NUM> such that the stabilizer wheel <NUM> rotates about a stabilizer wheel rotation axis <NUM>. As shown, the wheel receptacle <NUM> is configured such that the stabilizer wheel rotation axis <NUM> extends transverse to the stabilizer longitudinal axis <NUM> at a non-perpendicular angle. Such a configuration may orient the stabilizer wheel <NUM> such that the stabilizer wheel rotation axis <NUM> is perpendicular to a forward movement direction of the surface cleaning head <NUM>.

<FIG> show a schematic view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a main body <NUM>, a neck <NUM> pivotally coupled to the main body <NUM>, at least one wheel <NUM>, and a stabilizer <NUM>.

As shown, the stabilizer <NUM> is pivotally coupled to the main body <NUM> of the surface cleaning head <NUM> at a first pivot point <NUM>. As also shown, the at least one wheel <NUM> is rotatably coupled to the stabilizer <NUM> at a second pivot point <NUM>. The first pivot point <NUM> is spaced apart from the second pivot point <NUM> such that, as the stabilizer <NUM> rotates about the first pivot point <NUM>, the at least one wheel transitions between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>) by being rotated around the first pivot point <NUM>. The stabilizer <NUM> can be caused to rotate about the first pivot point <NUM> in response to, for example, the neck <NUM> being transitioned between a storage position (e.g., as shown in <FIG>) and an in-use position (e.g., as shown in <FIG>).

In some instances, and as shown, when transitioning between the extended position and the retracted position, the at least one wheel <NUM> can be rotated <NUM>° around the first pivot point <NUM> (e.g., in a clockwise or a counter-clockwise direction). Additionally, or alternatively, when transitioning between the extended position and the retracted position the at least one wheel <NUM> can be rotated less than or greater than <NUM>° around the first pivot point <NUM> (e.g., in a clockwise or a counter-clockwise direction). For example, when in the retracted position, the at least one wheel <NUM> can be rotated around the first pivot point <NUM> such that a floor facing surface <NUM> of the main body <NUM> extends transverse to a surface to be cleaned <NUM> (e.g., a floor).

<FIG> show a perspective view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a main body <NUM>, a neck <NUM> pivotally coupled to the main body <NUM>, at least one stabilizer <NUM>, and at least one wheel <NUM> rotatably coupled to the at least one stabilizer <NUM>. The neck <NUM> is configured to pivot side-to-side and between a storage position (e.g., as shown in <FIG>) and an in-use position (e.g., as shown in <FIG>). When the neck <NUM> transitions from the storage position to the in-use position, the at least one stabilizer <NUM> urges the at least one wheel <NUM> from an extended position (e.g., as shown in <FIG>) towards a retracted position (e.g., as shown in <FIG>).

As shown, the neck <NUM> includes at least one protrusion <NUM> configured to engage (e.g., contact) a swivel <NUM> pivotally coupled to the main body <NUM> of the surface cleaning head <NUM>. The protrusion <NUM> is configured to cause the swivel <NUM> to pivot in response to the neck <NUM> being transitioned between the storage and in-use positions. The swivel <NUM> is configured to urge the stabilizer <NUM> along a track <NUM> such that the at least one wheel <NUM> is transitioned between the extended and retracted positions in response to the neck <NUM> being transitioned between the storage and in-use positions.

The swivel <NUM> can be biased such that the swivel <NUM> urges the stabilizer <NUM> towards the main body <NUM> of the surface cleaning head <NUM>. In other words, the swivel can be configured to urge the at least one wheel <NUM> towards the retracted position. For example, the swivel <NUM> can be biased by a spring (e.g., a torsion spring, a compression spring, an extension spring, and/or any other spring).

Additionally, or alternatively, the stabilizer <NUM> can be coupled to a biasing mechanism (e.g., a spring such as a torsion spring, a compression spring, an extension spring, and/or any other spring). For example, as shown in <FIG>, an extension spring <NUM> can be coupled to a main body <NUM> of a surface cleaning head <NUM> and a stabilizer <NUM> such that, as the stabilizer <NUM> is urged along a track <NUM> in a direction away from the main body <NUM> of the surface cleaning head <NUM>, the extension spring <NUM> is extended. As the extension spring <NUM> extends, the extension spring <NUM> exerts a force on the stabilizer <NUM> that urges the stabilizer <NUM> towards the main body <NUM> of the surface cleaning head <NUM>.

<FIG> shows a perspective view of a portion of the main body <NUM>, wherein an upper portion of the main body <NUM> is shown as being transparent for purposes of clarity. <FIG> shows another perspective view of the portion of the main body <NUM> shown in <FIG>. As shown, the swivel <NUM> is configured to pivot about a pivot axis <NUM> that extends transverse (e.g., perpendicular) to a direction of forward travel. In other words, the pivot axis <NUM> extends substantially parallel to a wheel rotation axis <NUM>. As shown, the wheel rotation axis <NUM> is vertically spaced apart from the pivot axis <NUM>. In some instances, a torsion spring can be configured to exert a force on the swivel <NUM> (e.g., the torsion spring can extend around the wheel rotation axis <NUM>).

<FIG> shows a cross-sectional view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a single stabilizer <NUM> having a plurality of wheels <NUM> coupled thereto. The stabilizer <NUM> is configured to transition between an extended and a retracted position in response to a neck <NUM> transitioning between a storage and an in-use position. As shown, the stabilizer <NUM> is configured to engage a track <NUM> (e.g., a T-slot) that extends along a bottom surface <NUM> of the surface cleaning head <NUM>. In some instances, and as shown, the track <NUM> can be defined in a main body <NUM> of the surface cleaning head <NUM>.

<FIG> show a schematic view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a stabilizer <NUM> configured to transition between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>). The stabilizer <NUM> can include a plurality of links <NUM>. The links <NUM> are pivotally coupled to each other such that stabilizer <NUM> can transition between the extended position and the retracted position. As such, the stabilizer <NUM> may generally be referred to as being a scissor mechanism. As shown, at least one wheel <NUM> is coupled to the stabilizer <NUM> (e.g., a distal most one of the plurality of links <NUM>) such that as the stabilizer <NUM> is transitioned between the extended and retracted positions, the wheel <NUM> is urged between an extended positioned (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>).

<FIG> show a schematic view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a stabilizer <NUM> configured to transition between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>). As shown, the stabilizer <NUM> includes a lever <NUM> configured to pivot about a pivot point <NUM> in response to a neck <NUM> transitioning between an in-use position (e.g., as shown in <FIG>) and a storage position (e.g., as shown in <FIG>). As shown, as the neck <NUM> transitions between the in-use and storage positions, a protrusion <NUM> coupled to the neck <NUM> engages (e.g., contacts) the lever <NUM> such that the lever <NUM> is caused to pivot about the pivot point <NUM>. As the lever <NUM> pivots, the lever <NUM> urges a plunger <NUM> along a track <NUM>. The plunger <NUM> can be coupled to at least one wheel <NUM> such that the plunger <NUM> urges the at least one wheel <NUM> between an extended position (e.g., as shown in <FIG>) and a retracted position (e.g., as shown in <FIG>).

<FIG> shows a side view of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a main body <NUM>, a neck <NUM> pivotally coupled to the main body <NUM>, and a stabilizer <NUM> configured to transition between an extended and retracted position. As shown, the stabilizer <NUM> includes a pivot arm <NUM> pivotally coupled to the main body <NUM> such that, as the pivot arm <NUM> pivots about a pivot point <NUM>, the pivot arm <NUM> urges a plunger <NUM> along a track <NUM>. The pivot arm <NUM> may be biased (e.g., using a spring) such that the pivot arm urges the plunger <NUM> towards the main body <NUM> of the surface cleaning head <NUM>. As such, the neck <NUM> may include a protrusion <NUM> configured to engage (e.g., contact) the pivot arm <NUM> such that the plunger <NUM> moves along the track <NUM> in response to transitioning the neck <NUM> between a storage and in-use position. As also shown, at least one wheel <NUM> can be coupled to the plunger <NUM> such that the at least one wheel <NUM> transitions between extended and retracted positions in response to the neck <NUM> being transitioned between the storage and in-use positions.

<FIG> show a schematic example of a stabilizer <NUM>, which may be an example of the stabilizer <NUM> of <FIG>, coupled to a portion of a main body <NUM> of a surface cleaning head <NUM>. The stabilizer <NUM> can include one or more struts <NUM> pivotally coupled to the main body <NUM> and a wheel <NUM>. The wheel <NUM> can be a main wheel of the surface cleaning head <NUM>. As shown, when the stabilizer <NUM> is in the retracted position (e.g., as shown in <FIG>) the one or more struts <NUM> may extend generally parallel to a surface of the main body <NUM> of the surface cleaning head <NUM> and, when the stabilizer is in the extended position (e.g., as shown in <FIG>), the struts <NUM> may extend in a direction away from and behind the main body <NUM>.

<FIG> shows a schematic example of a surface cleaning head <NUM>, which may be an example of the surface cleaning head <NUM> of <FIG>. As shown, the surface cleaning head <NUM> includes a stabilizer <NUM> pivotally coupled to a neck <NUM> of the surface cleaning head <NUM>. As shown, the stabilizer <NUM> is configured to pivot between an extended and a retracted position (both positions being illustrated in <FIG> for purposes of clarity). When in the retracted position, the stabilizer <NUM> extends generally parallel to a longitudinal axis <NUM> of the neck <NUM> and, when in the extended position, the stabilizer <NUM> extends in a direction away from the neck <NUM> and towards a surface to be cleaned (e.g., a floor). In some instances, the stabilizer <NUM> can be configured to be removably coupled to the neck <NUM>, which may facilitate use of the stabilizer <NUM> between multiple surface treatment apparatuses (e.g., vacuum cleaners).

<FIG> show a schematic view of an example of a stabilizing system configured to improve the stability of a vacuum cleaner <NUM>. As shown, a suction body <NUM> (e.g., having a suction motor and dust cup) of the vacuum cleaner <NUM> is configured to slide along a wand <NUM> in a direction of a surface cleaning head <NUM> such that a location of a center of mass of the vacuum cleaner can be positioned closer to the surface cleaning head <NUM>. As shown, the wand <NUM> can be received at least partially within a flexible hose <NUM>. The flexible hose <NUM> extends along the suction body <NUM>.

An example of a surface cleaning head may include a main body, a neck pivotally coupled to the main body, a stabilizer, and a linkage pivotally coupled to the main body and the stabilizer. The linkage may be configured to cause the stabilizer to transition between an extended position and a retracted position in response to a pivotal movement of the neck.

In some instances, the neck may include a protrusion configured to engage at least a portion of the linkage. The protrusion may be configured to urge the linkage to pivot in response to the pivotal movement of the neck. In some instances, the linkage may include a pivot arm and a plunger. The pivot arm may define a channel for receiving the plunger. In some instances, the plunger is configured to slide within the channel in response to the pivotal movement of the neck. In some instances, the stabilizer may include a wheel. In some instances, the surface cleaning head includes a plurality of stabilizers, wherein each stabilizer extends along a respective one of a first axis and a second axis. In some instances, the first axis may extend transverse to the second axis such that a separation distance between the stabilizers increases with increasing distance from the main body. In some instances, the main body may include an opening from which the stabilizer extends. In some instances, the opening may be disposed between a top surface of the main body and a main wheel. In some instances, at least a portion of the stabilizer may extend over at least a portion of the main wheel.

An example of a vacuum cleaner may include a wand and a surface cleaning head. The surface cleaning head may include a main body, a neck, a stabilizer, and a linkage. The neck may be configured to receive the wand. The neck may be pivotally coupled to the main body such that the wand is configured to transition between a storage position and an in-use position. The linkage may be pivotally coupled to the main body and the stabilizer. The linkage may be configured to cause the stabilizer to transition between an extended position and a retracted position in response to a pivotal movement of the neck.

In some instances, the neck may include a protrusion configured to engage at least a portion of the linkage. The protrusion may be configured to urge the linkage to pivot in response to the pivotal movement of the neck. In some instances, the linkage may include a pivot arm and a plunger. The pivot arm may define a channel for receiving the plunger. In some instances, the plunger may be configured to slide within the channel in response to the pivotal movement of the neck. In some instances, the stabilizer may include a wheel. In some instances, the surface cleaning head may include a plurality of stabilizers, wherein each stabilizer extends along a respective one of a first axis and a second axis. In some instances, the first axis may extend transverse to the second axis such that a separation distance between the stabilizers increases with increasing distance from the main body. In some instances, the main body may include an opening from which the stabilizer extends. In some instances, the opening may be disposed between a top surface of the main body and a main wheel. In some instances, at least a portion of the stabilizer may extend over at least a portion of the main wheel.

Claim 1:
A surface cleaning head (<NUM>, <NUM>) comprising:
a main body (<NUM>, <NUM>);
a neck (<NUM>) pivotally coupled to the main body (<NUM>, <NUM>);
a stabilizer (<NUM>); and
a linkage (<NUM>) pivotally coupled to the main body (<NUM>, <NUM>) and the stabilizer (<NUM>), wherein the linkage (<NUM>) is configured to cause the stabilizer (<NUM>) to transition between an extended position and a retracted position in response to a pivotal movement of the neck (<NUM>) between a storage position and an in-use position,
characterized in that the linkage (<NUM>) includes a pivot arm (<NUM>) and a plunger (<NUM>), the pivot arm (<NUM>) defining a channel for receiving the plunger (<NUM>).