Variable speed control pulley with transmission diaphragm
CA 2034563 C · Owner: Powerbloc Ibc Canada Inc. · Inventors: Gourdon, Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a drive pulley of a variable speed transmission of which the driven pulley is driven by a V-belt connecting it to the said drive pulley. The drive pulley comprises two coaxial flanges each of whose conical cheeks face the other to form a V-shaped groove between them in which the V-belt runs one of the flanges, designated the fixed flange is affixed to the end of a hub attached to a drive shaft of the pulley and the other flange designated the moving flange, which slides axially on the said hub. A reaction cap affixed to the other end of the hub is comprised of a disk folded toward the centre-line on a suitable radius the inner surface of the cap being turned toward …
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 18, 1991 and granted November 24, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2013.
- 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.