Improved hinge and panel surface geometry of a multi-panel door assembly
CA 2255504 C · Owner: Windsor Door, Inc. · Inventors: Robertson, Gregory D.; Bates, Bruce N.; Scates, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mating assembly for sectional doors includes matable end portions formed on door sections with a first concave portion configured to accept a second convex portion with the concave portion and the convex portion having different curvature radii the end portions being joined for relative movement by a pinned hinge member with the hinge pin having a series of lateral projections and the hinge member having stop members to engage the lateral projections to prevent hinge pin rotation.
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 December 10, 1998 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2020.
- 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.