Power door operating device
CA 1280771 C · Owner: Lafontaine, Lucien · Inventors: Lafontaine, Lucien
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power operating device for use with vertically sliding garage doors provides a friction drive roller that can slide laterally to take into account variations in space between the side of the upper panel of the door and the guide tracks when the door is open or closed. The operating device includes a housing with a reversable motor and gear reduction driving a drive shaft a drive, roller formed of resilient material connected to the drive shaft and having a contoured surface to ride on an outside surface of one guide track, pinch means to pinch the one guide track between one of the guide rollers of the door and the drive roller such that rotation of the drive roller frictionally drives …
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 February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 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.
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.