Strike with rectilinearly movable keeper
CA 2005906 C · Owner: Herron, William L. · Inventors: Vadacchino, Joseph; Herron, William L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrically operable strike with a pivotable keeper and a rectilinearly slidable locking member with arms which in one position of the locking member prevent pivoting of the keeper and which in a second, different position of the locking member permit the keeper to pivot. The locking member has a magnetic portion and is moved from one position to the other by the magnetic field of a pair of electrically energizable coils. By selection of the spacing of the arms, the strike can be either normally locking or normally unlocking. Two locking members can be used to convert the strike from normally locking to normally unlocking or one locking member with adjustable or removable arms can be …
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 December 18, 1989 and granted June 30, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2011.
- 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.