Window locking system
CA 2238686 C · Owner: Kuersten, William R. · Inventors: Martz, William M.; Rote, Scott J.; Kuersten, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is disclosed for engaging locking elements to secure and lock a window sash to a window frame. A force transmitting device may be included with a guide forming a channel for an elongated tape transmits a horizontal movement provided by an operator mechanism into a vertical movement at a locking mechanism. The operator mechanism may include a removable bezel and a removable handle to facilitate access to the operator mechanism. A lockbar retainer of a compact construction guides a lockbar that actuates the locking elements.
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 May 27, 1998 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 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.