Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Knee
Patent
1986-05-28
1987-08-11
Frinks, Ronald L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Knee
623 46, A61F 264
Patent
active
046859276
ABSTRACT:
A braked knee joint having a thigh part and a lower leg part which are provided with braking surfaces adapted to one another and which, because of the capacity for axial movement of the thigh part relative to the lower leg part, are pressed against one another during loading. The braking surfaces essentially have a contour which is circular in vertical section and which has a constant radius relative to the rotational axis. The joint includes a suitable stop to produce a jerk-free termination of the extension movement of the knee joint out of the flexed position. The stop is formed by providing the braking surface of the thigh part with a front end piece which is at a distance which increases from the rotational axis and is greater than the constant radius, and by providing a corresponding front end piece of the braking surface of the lower leg part so that, with increasing extension of the knee joint in the unloaded condition, a constantly increasing area of the braking surfaces comes into frictional contact and this forms the stop.
REFERENCES:
patent: 2400032 (1946-05-01), Talbot
patent: 2853712 (1958-09-01), Bach
Frinks Ronald L.
Ott Bock Orthopaedische Industrie Besitz- und Verwaltungs-Komand
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