Pick resistant sash lock
CA 2256643 C · Owner: Rotondi, Anthony J. · Inventors: Rotondi, Anthony J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A check rail lock securable to the top rail of one window sash of a double hung window, including a housing a cam pivotable about a first, axis within the housing between an open position and a locking position a, pin extending from the bottom of the cam and a guard member disposed, substantially beneath the cam and pivotable about a second axis within the housing, the guard member having a slot receiving the pin for moving between a guarding position and a retracted position responsive to pivoting of the cam between the locking position and the open position. The cam in the locking position includes a portion extending from the housing and adapted to cooperate with a keeper secured to 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 December 17, 1998 and granted February 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2020.
- 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.