Delayed egress exit device
CA 2732817 C · Owner: Yale Security Inc. · Inventors: Whitaker, Andrew; Ensley, Michael; Lampley, Sidney J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A touch bar exit device comprises a retractor element disposed in the housing for substantially rectilinear movement. The retractor element connects the touch bar and the latch bolt such that the retractor element and the latch bolt are moved toward the retracted position in response to movement of the touch bar. An electrically energizable locking mechanism in the exit device includes a reciprocating plunger moving transverse to the retractor element. When energized the locking mechanism is operative to move the plunger to the projected locking position to prevent retraction of the latch bolt. A time delay circuit is connected to the locking mechanism. A switch actuated in response to …
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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
- Filed September 30, 2002 and granted December 24, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2024.
- 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.