Child-proof gas lighter
CA 2130799 C · Owner: Frigiere, Rene · Inventors: Frigiere, Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The means of preventing operation of the lever controlling opening of the burner valve consists of a sliding tappet fitted under the bottom surface of the back end of the control lever which shuttles between an active position where an integral part of the lighter body is just beneath it and prevents motion of the control lever so as to open the valve and a forward, "off" position in which the aforesaid integral part of the lighter body is no longer in its path when the control lever is operated so as to open the valve so that this operation becomes possible. A means of keeping the tappet momentarily in the "off" position is provided so that the control lever can be operated and other means …
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 February 19, 1993 and granted September 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2015.
- 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.