Leak proof burner assembly for oil lamps using plastic fuel containers
CA 2033645 A1 · Owner: Thompson, Lowell S. · Inventors: Thompson, Lowell S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The burner assembly includes a canister molded from a synthetic thermoplastic or thermosetting material and having a neck portion defining an opening for introducing a combustible liquid into the canister and a metal cap member for covering the canister opening and holding a wick. The cap member has an annular, inner flange which extends downwardly through the canister opening and fits in sealing engagement with the inner wall of the canister neck portion and an annular peripheral, outer collar which fits over and is crimped onto a laterally outward extending annular lip on the upper rim of the canister neck portion to sandwich or capture the upper rim between the inner flange and the outer …
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 January 4, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2013.
- 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.