Foot prosthesis having cushioned ankle
CA 2426729 A1 · Owner: Pouchak, Hilary · Inventors: Phillips, Van L.; Pouchak, Hilary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A simple, inexpensive prosthetic foot is provided incorporating a cushioned ankle including an ankle block formed of a resilient material or bladder having desired compliance and energy return characteristics. The ankle block is sandwiched between a foot element and an ankle element. One or more openings extends through the ankle block with a substantially transverse orientation relative to a forward walking motion. The size and shape of these openings, as well as the insertion of different types of stiffeners therein provide desired performance characteristics to the ankle block. When the ankle block takes the form of one or more inflatable bladders the pressure within , these …
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 October 25, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2023.
- 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.