Improved inverted tooth chain
CA 2007512 C · Owner: Borg-Warner Automotive Transmission & Engine Components Corporation · Inventors: Reber, Reiner F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chain constructed of alternating groups of fine blanked articulating links and sets of guide and connecting links. The sets and groups of links are joined by pivot means journaled in, smooth walled openings in the articulating links and press-fit into the openings in the guide and connecting links. The articulating links are of the silent variety with a pair of toes spaced by a crotch with the defining flanks of the toes being adaptable for drivingly contacting the teeth of sprockets. To provide the smooth walled openings in the articulating links these links are fine blanked as opposed to being conventionally blanked.
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 10, 1990 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.