Friction hinge assembly
CA 2122910 C · Owner: General Clutch Corporation · Inventors: Rude, Edward T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a friction hinge assembly capable of providing hinged motion of two elements (1 3) with a, programmable frictional torque. The frictional torque can be made to vary with the angular orientation of the two hinged elements. The frictional hinge assembly is comprised of a band (17) wrapped around a pintle (5) which is constrained to move rotationally with the first hinged element. One end of the band has a lug (19) configured to press against the second hinged element exerting, there-upon a torque about the pintle. The other end of the band has a tail (25) to which is applied a controlled force to produce the desired frictional torque between the band and the pintle.
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 November 3, 1992 and granted June 16, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2014.
- 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.