Prosthetic foot
CA 1071356 A · Owner: Daher, Reinhard L. · Inventors: Tucker, Frederick R.; Daher, Reinhard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The foot comprises a keel of hard material such as wood and having a flat attachment surface a curved, instep portion and a planar diminished heel portion. Recesses are formed above and below the front ends of the toe portion and a resilient reinforcing tongue portion is secured within each recess. These tongues extend forwardly of the keel and are connected together with a relatively dense foamed plastic therebetween so that the resistance of the tongues and of the plastic controls the flexural resistance of the toe portion. The shape of the heel portion permits the maximum amount of foam possible to be provided at the heel so that the density of the heel is variable and controllable by …
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
- Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
- 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.