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US 4,844,057 AGranted
Knee orthotic hinge joint
OwnerDavid Hoyinventor
Life of this patent
Estimating the term…
Abstract
An orthopedic hinge joint mechanism for proteciton of unstable or injured knees. Four coacting members are rotably fastened each to the next in a series. The first and third members lie in one plane and the second and fourth lie in an adjacent parallel plane. The members in the same plane abut in gears. As a result of this construction the hinge moves symmetrically about its center and effectivley simulates the complex action of the human knee joint.
Claims8
A hinge mechanism for following the motion of the human knee, said hinge mechanism comprising
- a first member;
- a second member rotably connected to said first member at a first axis of rotation;
- a third member rotably connected to said second member at a second axis of rotation distinct from said first axis;
- and
- a fourth member rotably connected to said third member at a third axis of rotation distinct from said first and second axes;
- said first and third members being in toothed rolling abutment and said second and fourth members being in toothed rolling abutment.
3 more elements
Dependencies are inferred from the claim text.