Barbecue lighter with gas safety system
CA 2298176 A1 · Owner: Polycity Enterprise Limited · Inventors: Sher, Tak Chi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lighter safety system which in a first "safety on" position prevents the ignition of the, lighter by not releasing gas when the trigger is pulled. The simultaneous downward depression of, a safety switch with the operator's thumb and the rearward depression of the trigger by the, operator's fingers (of the same hand) allows the lighter to ignite. A safety gas lever in the housing, is pivotable when a positioning pillar in the housing is depressed. A yoke on one end of switch, lever engages the neck of a gas nozzle. Depression of the switch lifts the nozzle to release gas. The simultaneous depression of the trigger activates the ignition system; thereby igniting a flame.
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 11, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2022.
- 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.