Overhead door lock system and control unit therefor
CA 2435478 A1 · Owner: Automated Security Technologies, Inc. · Inventors: Shoemaker, Rodney
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an improved door locking mechanism for locking, an overhead door having engageable means movable in a channel of a track when the door, is in a closed position and which is disengageable to allow for opening movement of the, door. The locking mechanism includes a frame means capable of being mounted in proximity to the door; a movement obstruction member on the frame means; camming, means associated with the movement obstruction member; and means for automatically, shifting the obstruction member to a position out of the channel to allow opening, movement of the door. The movement obstruction member is shiftable into an obstructing, position in the …
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
- Filed July 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2025.
- 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.