Roller bushing
CA 2063574 C · Owner: Link, Larry Ray · Inventors: Link, Larry Ray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roller bushing assembly for use in a vehicular leaf spring suspension system pivotally supports an end of a leaf spring (2) so as to minimize transmission of roadway induced shock and vibration loads to the vehicle and driver. The roller bushing assembly (21) includes a tubular housing (29) containing roller bearings (33 34), for support of a shaft (40) which is connected to a vehicle chassis (1). Free flexure of the spring (2) is facilitated by providing low friction pin connections that minimize resistance of the vehicle/spring connections to rotation of the spring ends and extension and contraction of the spring. A method of installation of a bushing (21) having bearings (33, 34) …
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 July 17, 1990 and granted February 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2012.
- 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.