Positive action fenestration lock
CA 2477933 C · Owner: Roto Fasco Canada Inc. · Inventors: Zhang, Kai; Rebel, Jacob
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A positive action fenestration lock, i.e. adaptable to be attached to a moving window profile and to interact by sliding, with a fixed window profile said positive action fenestration lock comprises: a hollow body closed by a base plate; a bolt-wedge displaceable rectilinearly with respect to the hollow body and the base plate respectively; a button located generally in the hollow body and pivotally connected to the base; an actuator and a flat spring the latter being attached to the former controlling together the rectilinear movement of the bolt-wedge while the latter is activated by the button; a pair of restoring torsion springs located between the base plate and the button for …
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 August 18, 2004 and granted January 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2026.
- 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.