Centrifugal lock-up clutch and torque converter
CA 1055803 A · Owner: General Motors Corporation · Inventors: Walker, Frank H.
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 lock-up clutch for a torque converter wherein the clutch is engaged with the impeller by centrifugal force. Trhe clutch is drive connected to the turbine through a primary drive spring, disposed in a circumferential direction so that relative, angular movement initiated by engine torsional vibrations occur between the clutch and turbine. A secondary clutch engagement control spring is connected in a generally radial direction between the clutch and turbine. The secondary spring provides a clutch holdoff force at low clutch speeds and a clutch engagement intensifier force after engagement. A friction member is disposed between the clutch and the turbine to …
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 June 5, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 1996.
- 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.