Prosthetic knee joint
CA 2108378 C · Owner: Rincoe, Richard G. · Inventors: Rincoe, Richard G.; Hull, Marlin B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A robotic knee (10) for mounting on an upper leg stump(28) allowing, movement from standing position to normal walking position to kneeling position and returning to standing position. A mounting plate (24) receives the upper leg stump. The knee includes a housing (12) having a drive motor (16) which can be rotated one direction to bend knee and reversed to straighten knee. The drive motor turns a worm gear (44) which engages a main drive gear (46). A pair of extension pulleys (48) is mounted on a main drive gear shaft attached to main drive gear. A pair of extension cables (54) is attached at one end to extension pulleys and wrapped thereon. Another end of extension cables is attached to …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed April 17, 1992 and granted May 12, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.