IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0809818
(2008-12-22)
|
등록번호 |
US-8490994
(2013-07-23)
|
국제출원번호 |
PCT/EP2008/011016
(2008-12-22)
|
§371/§102 date |
20100924
(20100924)
|
국제공개번호 |
WO2009/080347
(2009-07-02)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Sunrise Medical GmbH & Co. KG
|
대리인 / 주소 |
MacMillan, Sobanski & Todd, LLC
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
20 |
초록
▼
A wheelchair frame includes left and right first frame members, each having a first leg for supporting a seat. The first legs are arranged on opposite sides of a central axis of the wheelchair. At least one cross-brace is connected, by the ends, to the first legs of the left and right frame members.
A wheelchair frame includes left and right first frame members, each having a first leg for supporting a seat. The first legs are arranged on opposite sides of a central axis of the wheelchair. At least one cross-brace is connected, by the ends, to the first legs of the left and right frame members. The cross-brace has a non-circular cross-section along a section between the ends. The wheelchair frame includes left and right second frame members that are pivotally connected to the left and right first frame members. The second frame members are foldable and may be fixed in a position in that is generally parallel to the first legs of the left and right first frame members. A cross-brace is connected, by the ends, to the left and right second frame members. The cross-brace has a non-circular cross-section along a section between the ends.
대표청구항
▼
1. A wheelchair having a frame including left and right frame members, each frame member having a first leg configured to support a seat, and a second leg configured to support front caster wheels, the first leg extending substantially horizontally and the second leg extending substantially downward
1. A wheelchair having a frame including left and right frame members, each frame member having a first leg configured to support a seat, and a second leg configured to support front caster wheels, the first leg extending substantially horizontally and the second leg extending substantially downward from the first leg, and a cross-brace connected to the first legs of the left and right frame members, the cross-brace having end sections and a central section intermediate the end sections, the end sections being connected to the first legs, and the central section having a non-circular cross-section that is accessible as a handhold and provides leverage against gravitational rotation of the frame when carried by hand. 2. The wheelchair of claim 1 wherein the frame is a base frame and wherein a backrest frame is pivotally connected to the base frame and configured to be fixed in at least one of a plurality of positions relative to the base frame, the backrest frame including left and right second frame members and a cross-brace having end sections and a central section intermediate the end sections, the end sections being connected to the left and right second frame members, and the central section having a non-circular cross-section. 3. The wheelchair of claim 1 wherein the non-circular cross-section is an oval shaped center portion of the central section of the cross-brace, the oval shaped center portion having a major dimension that is generally parallel to a plane defined by the first legs of the first and second side frame members. 4. The wheelchair of claim 1 wherein the frame is a base frame that is pivotally connected to a backrest frame by left and right angle plates, the left and right angle plates being configured to fold and fix the backrest frame in a generally parallel orientation relative to the first legs of the base frame such that the central section is accessible as a handhold that is configured to resist rotation about a center of gravity of the wheelchair during transport. 5. The wheelchair of claim 1 wherein the frame cross-brace central section includes transition regions that connect a center portion having a generally oval cross section to the end sections having generally circular cross sections. 6. The wheelchair of claim 3 wherein the major dimension of the oval shaped central section of the frame cross-brace is offset from the plane defined by the first legs of the frame toward an axle tube such that a space is formed between the plane of the frame first legs and the cross-brace central section, the space being configured to access the central section which functions as the handhold. 7. The wheelchair of claim 2 wherein the backrest frame cross-brace central section includes transition regions that connect a center portion having a generally oval cross section to the end sections having generally circular cross sections. 8. The wheelchair of claim 4 wherein the oval shaped center portion of the central section of the backrest frame cross-brace has a major dimension that is generally parallel to a plane defined by the first legs of the first and second side frame members when the backrest is fixed in a folded position. 9. The wheelchair of claim 7 wherein the major dimension of the oval shaped center portion of the central section of the backrest frame cross-brace is offset from a plane defined by left and right second frame members when the backrest frame is fixed in a folded position such that a space is formed between the plane of the backrest frame second frame members and the cross-brace central section, the space being configured to access the backrest cross-brace central section such that the central section functions as a handhold. 10. The wheelchair of claim 2 wherein the central section of at least one of the base frame cross-brace and the backrest frame cross-brace is covered with a material configured to provide an improved grip during transport. 11. A frame assembly of a wheelchair having a base frame comprising spaced-apart side frame members having first legs that define a plane, each first leg being adapted to support an axle plate, the axle plates being configured to adjustably mount an axle tube to the base frame, a first cross-brace having ends connected to the first legs and a central section that is offset from the plane of the first legs, the cross-brace central section having a non-circular cross section that includes a major dimension that is generally parallel to and offset from the plane defined by the first legs. 12. The frame assembly of claim 11 wherein the first legs further support a backrest frame having left and right second frame members that are connected by a backrest cross-brace, the left and right second frame members defining a plane such that the major dimension of the non-circular central section of the backrest frame cross-brace is generally parallel to and offset from the plane defined by the left and right second frame members. 13. The frame assembly of claim 12 wherein the backrest frame is pivotally connected to the base frame by left and right angle plates such that the backrest frame can be folded between a use position and a transport position that is generally parallel to the base frame first legs. 14. The frame assembly of claim 13 wherein the first legs of the base frame support second legs, the second legs being configured to telescopically receive first and second footrest frame members, the footrest frame members being interconnected by a footrest cross-brace. 15. The frame assembly of claim 14 wherein the base frame is an open frame such that the first legs transition to the second legs by integrally formed curved sections such that the spacing between the first legs is greater than the spacing between the second legs, and the axle tube supports rear wheels for relative rotation and the second legs support caster assemblies having caster wheels that are spaced from the second legs such that the rear wheels are generally coplanar with the caster wheels. 16. A wheelchair having a base frame including left and right frame members, each frame member having a first leg configured to support a seat, and a backrest frame pivotally connected to the base frame and configured to be fixed in a generally parallel position relative to the base frame, the backrest frame including left and right second frame members and a cross-brace having end sections and a central section intermediate the end sections, the end sections being connected to the left and right second frame members, and the central section having a non-circular cross-section that is configured as a handhold that provides a leverage point to resist rotation of the wheelchair under the effect of gravity as the wheelchair is carried by hand. 17. The wheelchair of claim 16 wherein the backrest cross-brace central section includes transition regions that connect a center portion having a generally oval cross section to the end sections having generally circular cross sections. 18. The wheelchair of claim 17 wherein the backrest frame is pivotally connected to the base frame by left and right angle plates that are configured to fold and fix the backrest frame in a generally parallel orientation relative to the first legs of the base frame, the center portion being spaced from a plane defined by the left and right second frame members and being accessible as the handhold. 19. The wheelchair of claim 18 wherein the center portion of the central section has a major dimension that is generally parallel to a plane defined by the first legs of the first and second side frame members when the backrest is fixed in a folded position, the center portion being covered with a material configured to provide an improved grip during transport. 20. The wheelchair of claim 19 wherein the base frame includes a cross-brace having ends that connect the left and right frame members. 21. A wheelchair having a frame including left and right frame members, each frame member having a first leg configured to support a seat, and a second leg configured to support front caster wheels, the first leg extending substantially horizontally and the second leg extending substantially downward from the first leg, and a cross-brace connected to the first legs of the left and right frame members, the cross-brace having end sections and a central section intermediate the end sections, the end sections being connected to the first legs, and the central section having an oval shaped center portion, the oval shaped center portion having a major dimension that is generally parallel to a plane defined by the first legs of the first and second side frame members and offset from the plane toward an axle tube such that a space is formed between the plane of the frame first legs and the cross-brace central section, the space being configured to access the central section such that the central section functions as a handhold. 22. A wheelchair having a base frame including left and right frame members and a backrest pivotally connected to the base frame, each base frame left and right frame member having a first leg configured to support a seat, and a second leg configured to support front caster wheels, the first leg extending substantially horizontally and the second leg extending substantially downward from the first leg, and a base frame cross-brace connected to the first legs of the left and right frame members, the base frame cross-brace having end sections and a central section intermediate the end sections, the end sections being connected to the first legs, and the central section having a non-circular cross-section, the backrest frame being configured to be fixed in at least one of a plurality of positions relative to the base frame, the backrest frame including left and right second frame members and a backrest cross-brace having end sections and a central section intermediate the end sections, the end sections having generally circular cross sections and being connected to the left and right second frame members, the central section having a center portion with a generally oval cross section and transition regions that connect the center portion to the end sections, wherein a major dimension of the oval shaped center portion of the central section of the backrest frame cross-brace is offset from a plane defined by left and right second frame members when the backrest frame is fixed in a folded position such that a space is formed between the plane of the backrest frame second frame members and the cross-brace central section, the space being configured to access the backrest cross-brace central section such that the central section functions as a handhold.
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