Hinge
CA 2113537 C · Owner: Ferco Architectural Hardware, Inc. · Inventors: Rossmo, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adjustable hinge has two plates connected by a series of knuckles at least two on one plate and one on the other. The spacing between adjacent knuckles on one plate is greater than the length of the intervening knuckle on the other plate so that the knuckle may be moved along the hinge pin joining the knuckles. To effect this movement the adjustable knuckle and the hinge pin are threaded. To provide adequate strength to the hinge the pin and the non-adjustable hinge plate knuckles have two sets of axially facing support surfaces so as to distribute the hinge load over a sufficient area. Lateral loads on the threading may be limited through the use of cylindrical pin and knuckle sections.
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 January 14, 1994 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 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.