Multiaxis controlled motion knee brace with a four bar joint and method for producing same
CA 2082164 C · Owner: Williams, Robert J. · Inventors: Townsend, Jeffrey H.; Williams, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A knee brace (10) has a pair of femoral and tibial links (12a,12b 14a,14b) and a four bar joint mechanism (18) by which a lateral side one of the femoral links (12a) is pivotally connected to a lateral side one of the tibial links (14a) and a four bar joint mechanism (20) by which a medial side one of the femoral links (12b) is pivotally connected to a medial side one of the tibial links (14b). Each of the joint mechanisms comprises an inner, padded, pivot plate (23 25) and an outer pivot plate, (29), each end of which is pivotally connected at a single point to a respective one of the femoral and tibial links. Furthermore the pad on the, inner pivot plate of the medial side joint mechanism …
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 March 6, 1992 and granted November 17, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 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.