A wheelchair leg arranged to be attached to a frame of a wheelchair comprising a first member, a bracket secured to the first member and operatively arranged to attach the first member to the frame, a second member pivotably attached to the first member, a third member arranged in telescoping engage
A wheelchair leg arranged to be attached to a frame of a wheelchair comprising a first member, a bracket secured to the first member and operatively arranged to attach the first member to the frame, a second member pivotably attached to the first member, a third member arranged in telescoping engagement with the second member, and a spring located between the second member and the third member and operatively arranged to provide tension between the second and third members when the third member is moved relative to the second member.
대표청구항▼
1. A wheelchair leg arranged to be attached to a frame of a wheelchair, comprising: a first member;a bracket secured to said first member, said bracket operatively arranged to attach said first member to said frame;a second member pivotably attached to said first member;a third member arranged in te
1. A wheelchair leg arranged to be attached to a frame of a wheelchair, comprising: a first member;a bracket secured to said first member, said bracket operatively arranged to attach said first member to said frame;a second member pivotably attached to said first member;a third member arranged in telescoping engagement with said second member;said second member comprising a guiding means; anda spring located within said second member and said third member operatively arranged to provide tension between said second and third members when said third member is moved relative to said second member;wherein said spring includes a first end and a second end, said first end of said spring is attached to said second member and said second end of said spring is secured to said third member, wherein said second end of said spring is further connected to a pin fixedly connected to said third member; wherein said pin is operatively engaged with said guiding means in said second member to prevent said third member from rotating about an axis of rotation while telescopically engaged with said second member, wherein said second end of said spring is affixed to a block and said pin is directly secured to said block. 2. The wheelchair leg as recited in claim 1, further comprising an adjuster bar, located between said first member and said second member, said adjuster bar operatively arranged to adjust an angle along an axis of rotation between said first and second members. 3. The wheelchair leg as recited in claim 2, wherein said adjuster bar comprises a locking mechanism operatively arranged to lock said second member along the axis of rotation with respect to said first member. 4. The wheelchair leg as recited in claim 1, further comprising a footrest operatively arranged at a distal end of said third member. 5. The wheelchair leg as recited in claim 4, wherein said third member comprises a first section and a second section, said first section is perpendicular to said second section and telescopingly engaged with said second member. 6. The wheelchair leg as recited in claim 5, wherein said footrest is arranged perpendicular to said second section of said third member. 7. The wheelchair leg as recited in claim 1, wherein said third member comprises said pin fixedly connected thereon and said second member guiding means comprises an aperture arranged thereon, said pin engages said aperture and prevents said third member from rotating with respect to said second member. 8. The wheelchair leg as recited in claim 7, wherein said pin lies perpendicular to said aperture, said pin further extending through said aperture. 9. A wheelchair leg arranged to be attached to a frame of a wheelchair, comprising: a first member;a bracket secured to said first member, said bracket operatively arranged to attach said first member to said frame;a second tubular member pivotably attached to said first member, said second tubular member comprising a guiding means;a third tubular member arranged in telescoping engagement with said second tubular member;a foot rest secured at a distal end of said third tubular member;a spring located within said second and third tubular members and secured to each of said second and third tubular members, said spring arranged to provide tension between said second and third tubular members when said third tubular member is moved relative to said second tubular member;wherein said spring includes a first end and a second end, said first end of said spring is attached to said second tubular member and said second end of said spring is secured to said third tubular member, wherein said second end of said spring is further connected to a pin fixedly connected to said third tubular member; wherein said pin is operatively engaged with said guiding means in said second tubular member to prevent said third tubular member from rotating about an axis of rotation while telescopically engaged with said second tubular member, wherein said second end of said spring is affixed to a block and said pin is directly secured to said block. 10. The wheelchair leg as recited in claim 9, further comprising an adjuster bar, located between said first member and said second tubular member, said adjuster bar operatively arranged to adjust an angle along an axis of rotation between said first member and said second tubular member. 11. The wheelchair leg as recited in claim 10, wherein said adjuster bar comprises a locking mechanism operatively arranged to lock said second tubular member along the axis of rotation with respect to said first member. 12. The wheelchair leg as recited in claim 9, wherein said third tubular member comprises a first section and a second section, said first section is perpendicular to said second section and telescopingly engaged with said second tubular member. 13. The wheelchair leg as recited in claim 12, wherein said footrest is arranged perpendicular to said second section of said third tubular member. 14. The wheelchair leg as recited in claim 9, wherein said third tubular member comprises a pin fixedly connected thereon and said second tubular member comprises an aperture arranged thereon, said pin engages said aperture and prevents said third tubular member from rotating with respect to said second tubular member. 15. The wheelchair leg as recited in claim 14, wherein said pin lies perpendicular to said aperture, said pin further extending through said aperture. 16. A wheelchair leg arranged to be attached to a frame of a wheelchair, comprising: a first tubular member;a second tubular member pivotably attached to said first tubular member, said second tubular member comprising a guiding means;a third tubular member arranged in telescoping engagement with said second tubular member;a bracket secured to said first tubular member and arranged to attach said wheelchair leg to said frame;a footrest secured at a distal end of said third tubular member;an adjuster bar, located between said first tubular member and said second tubular member, said adjuster bar operatively arranged to adjust an angle between said first and second tubular members; and,a spring concentrically arranged within said second tubular member and said third tubular member to provide tension between said second and third tubular members;wherein said spring includes a first end and a second end, said first end of said spring is attached to said second tubular member and said second end of said spring is secured to said third tubular member, wherein said second end of said spring is further connected to a pin fixedly connected to said third tubular member; wherein said pin is operatively engaged with said guiding means in said second tubular member to prevent said third tubular member from rotating about an axis of rotation while telescopically engaged with said second tubular member, wherein said second end of said spring is affixed to a block and said pin is directly secured to said block.
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이 특허에 인용된 특허 (18)
Watterson Scott R. ; Bingham Curt G. ; Measom S. Ty, Aerobic and anaerobic exercise machine.
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