Electromechanical operating device for a slidingly movable door
CA 1294635 C · Owner: Charnay, Georges · Inventors: Charnay, Georges; Rousselot, Andre J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electromechanical operating device for a slidingly movable door. Electromechanical operating device for a slidingly movable door, which device comprises a motor driving a worm on which is mounted a nut connected to the door which is is to be moved, said nut being secured in respect of rotation by a slide guide having a step at the point corresponding to the end of the stroke of the door. This step allows a certain rotation of the nut and constitutes a stop preventing the rearward displacement of the nut when the latter is acted on by means of the door. The nut is composed of two parts axially fastened to one another and mounted for rotation one about the other these parts being so shaped as …
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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 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 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.