Orthotic walker
CA 2115528 C · Owner: Hart, David · Inventors: Hart, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an orthotic walker, mechanism is provided to bias alternate motion of a user's, legs. The mechanism may be a reciprocating bar at hip level or at least one , strap, ends of which are attached to leg braces the bight passing round a fixed frame member. A stirrup mechanism may be pivoted at an "ankle joint" and the pivotal motion may be limited to avoid toe down position. The stirrup may have a clamp for a shoe. Brake mechanism may be movable between operative and inoperative positions. In the operative position rearward rolling is disallowed while forward, motion is allowed.
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 February 11, 1994 and granted April 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2016.
- 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.