Geared-neutral continuously variable transmission
CA 1268960 C · Owner: General Motors Corporation · Inventors: Vahabzadeh, Hamid; Macey, James P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A geared neutral continuously variable transmission has a variable ratio belt drive a fixed, ratio drive and a planetary gear set. The fixed ratio drive is selectively connectible with the transmission input by a friction clutch and with the planetary gear set by another friction clutch. A one-way clutch is disposed in parallel drive relation with the other friction clutch. When the fixed drive ratio is not transmitting torque, it can be effectively removed from the drive path to increase efficiency and reduce noise generation by disengaging the friction clutches.
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
- Granted May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
- 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.