IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0858858
(2013-04-08)
|
등록번호 |
US-8668220
(2014-03-11)
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발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
8 |
초록
▼
A wheelchair system and an accessory system for a wheelchair are disclosed. According to one embodiment, the accessory system may include an accessory frame having one or more interface elements to mount to a wheelchair frame. The accessory system may include a wheel assembly rotatably coupled to th
A wheelchair system and an accessory system for a wheelchair are disclosed. According to one embodiment, the accessory system may include an accessory frame having one or more interface elements to mount to a wheelchair frame. The accessory system may include a wheel assembly rotatably coupled to the accessory frame by a first fastener. The accessory system may include an engagement system further coupling the accessory frame to the wheel assembly. The engagement system may include a channel guide member defining a channel having a notched region. The channel guide member may be rotatably coupled to one of the accessory frame or wheel assembly by a second fastener. The engagement system may further include a translating member retained within the channel of the channel guide member. The translating member may be fixed to another one of the accessory frame or wheel assembly.
대표청구항
▼
1. An accessory system for a wheelchair, comprising: an accessory frame having one or more interface elements to mount to a wheelchair frame;a wheel assembly rotatably coupled to the accessory frame by a first fastener;an engagement system further coupling the accessory frame to the wheel assembly,
1. An accessory system for a wheelchair, comprising: an accessory frame having one or more interface elements to mount to a wheelchair frame;a wheel assembly rotatably coupled to the accessory frame by a first fastener;an engagement system further coupling the accessory frame to the wheel assembly, the engagement system including: a capture member defining a capturing region, the capture member rotatably coupled to one of the accessory frame or wheel assembly by a second fastener, anda captured element fixed to another one of the accessory frame or wheel assembly, the capture element adapted to fit within the capturing region of the capture member;a control element configured to release the captured element from the capturing region of the capture member upon activation of the control element by a user; andwherein an axis of rotation of a fork portion of the wheel assembly relative to a head portion of the wheel assembly is inclined relative to a vertical/gravitational axis if the captured element is located outside of the capturing region and is substantially aligned with the vertical/gravitational axis if the captured element is located within the capturing region. 2. The accessory system of claim 1, wherein the channel guide member is rotatably coupled to the wheel assembly by the second fastener; and wherein the captured element is fixed to the accessory frame. 3. The accessory system of claim 1, wherein the channel guide member is rotatably coupled to the accessory frame by the second fastener; and wherein the captured element is fixed to the wheel assembly. 4. The accessory system of claim 1, wherein an axis of rotation about the first fastener is parallel to an axis of rotation about the second fastener. 5. The accessory system of claim 1, further comprising: a locking element to inhibit rotation of one or more wheels of the wheel assembly about the axis of rotation of the fork portion relative to the head portion. 6. The accessory system of claim 1, wherein the control element takes form of a control member that includes a lever that urges the capture member to release the captured element. 7. The accessory system of claim 6, wherein the lever of the control member is rotatably coupled to the accessory frame by a third fastener 8. The accessory system of claim 1, wherein the captured element if captured by the capturing region of capture member provides a load bearing connection by the engagement system between the wheel assembly and the accessory frame. 9. The accessory system of claim 8, wherein the captured element, if not captured by the capturing region of the capture member, provides a non-load bearing connection by the engagement system between the wheel assembly and the accessory frame. 10. The accessory of claim 9, wherein the wheel assembly includes a wheel having a diameter such that: the load bearing connection by the engagement system enables the wheelchair to be at least partially supported by the wheel assembly with the front wheels of the wheelchair raised relative to a ground surface. 11. The accessory system of claim 1, further comprising: an elastic member configured to urge the captured element toward or into the capturing region. 12. The accessory system of claim 11, wherein the elastic member includes a tension spring having a first end coupled to the wheel assembly and a second end coupled to the capture member. 13. The accessory system of claim 1, wherein the wheel assembly includes one or more wheels; and wherein the wheel assembly includes at least one wheel having a larger diameter than a front wheel of the wheelchair. 14. The accessory system of claim 1, wherein the wheel assembly includes two wheels of the same diameter. 15. The accessory system of claim 1, wherein the wheel assembly includes two wheels having different diameters. 16. The accessory system of claim 15, wherein the two wheels of the wheel assembly each have diameters that are larger than a front wheel of the wheelchair. 17. The accessory system of claim 1, wherein the interface elements include one or more clamps for receiving respective frame members of the wheelchair frame; and wherein the accessory frame includes a plurality of frame members forming a rigid frame, the plurality of frame members coupled to each other by one or more adjustment members enabling a size of the accessory frame to be adjusted to accommodate wheelchairs of different sizes. 18. A wheelchair system, comprising: a wheelchair frame;a rear set of wheels coupled to the wheelchair frame;an intermediate set of wheels coupled to the wheelchair frame;a wheel assembly rotatably coupled, about a first axis of rotation, to the wheelchair frame by a first fastener permitting a second axis of rotation of a fork portion of the wheel assembly to be inclined relative to a vertical/gravitational axis in a first orientation in which the intermediate set of wheels contact a ground surface and the second axis of rotation to be substantially aligned with the vertical/gravitational axis in a second orientation in which the intermediate set of wheels are raised relative to the ground surface, the wheel assembly further including at least one front wheel; andan engagement system further coupling the wheelchair frame to the wheel assembly, the engagement system including: a channel guide member defining a channel having a notched region, the channel guide member rotatably coupled to one of the wheelchair frame or wheel assembly by a second fastener; anda translating member retained within the channel of the channel guide member, the translating member fixed to another one of the wheelchair frame or wheel assembly, the second orientation of the wheel assembly corresponding to the translating member being retained by the notched region within the channel guide member and the first orientation of the wheel assembly corresponding to the translating member being retained within the channel guide member outside of the notched region. 19. An accessory system for a wheelchair, comprising: an accessory frame having one or more interface elements to mount to a wheelchair frame;a wheel assembly rotatably coupled to the accessory frame by a first fastener, the wheel assembly including a head portion, a fork portion, and one or more wheels;an engagement system further coupling the accessory frame to the wheel assembly, the engagement system providing a load bearing connection between the wheel assembly and the accessory frame in an engaged state in which an axis of rotation of the fork portion relative to the head portion is substantially aligned with a vertical/gravitational axis, and the engagement system providing a non-load bearing connection between the wheel assembly and the accessory frame in a disengaged state in which the axis of rotation of the fork portion relative to the head portion is angled relative to the vertical/gravitational axis; anda control element configured to disengage the engagement system upon activation by a user to transition the engagement system from an engaged state to a disengaged state.
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