High speed folding door
CA 1306181 C · Owner: Rite-Hite Holding Corporation · Inventors: West, Floyd D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-section folding door includes first and second sets of vertically aligned panels with the panels in each set coupled together in an edge overlapping manner. Each of the panels is suspended from a support bracket attached to the panel s upper edge, with each of the brac? coupled to and suspended from a track by means of a respective trolley. The trolleys permit the first and second sets of panels to be displaced toward or away from each other in closing or opening the folding door relative to an opening in a wall. An endless chain/sprocket arrangement driven by an electric motor allows the multi-panel folding door to be opened and closed very rapidly. A thickened upper edge of each …
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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.