Expired Canadian patentCanada
Combination electric and mechanical servo drive clutch
CA 1283871 C · Owner: Sofy, Hugh M. · Inventors: Sofy, Hugh M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanical clutch insures positive drive of a transfer mechanism by a servo motor yet provides instant mechanical release and electrical disconnect of the servo drive due to interference in the press or transfer mechanism.
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 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 22, 1987
GrantedMay 7, 1991
Term endedMay 7, 2008
Patent numberCA 1283871 C
Classification (IPC)F16D7/00 +2 more
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.