Expired Canadian patentCanada
Sofa bed with friction stop
CA 1312178 C · Owner: Hartline, Michael F. · Inventors: Hartline, Michael F.
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 sofa bed having a friction damper on the main angle of the bed frame, which prevents the front tube and front legs of the frame from rapidly swinging forward as the frame is opened to prevent injury to the operator.
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 January 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 15, 1987
GrantedJanuary 5, 1993
Term endedJanuary 5, 2010
Patent numberCA 1312178 C
Classification (IPC)A47C17/04 +1 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.