Fuel tank with a recessed fill cap
CA 2131244 C · Owner: Farmer, Robert M. · Inventors: Pemberton, Clifford H.; Farmer, Robert M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel tank comprises a rotationally molded tank wall having a recessed neck unitarily formed with the tank wall during the rotational molding process. The neck receives a correspondingly threaded cap so that a top surface of the cap remains substantially at the level of the tank wall surface when a stem on the cap is threadedly engaged in the correspondingly threaded neck of the tank. In addition a process for, recessing a fill cap in a fuel tank comprises rotational molding of a plastic powder to form a hollow body within at least two mold parts. An insert carried by the one of the mold parts forms a threaded neck recessed inwardly from the tank wall surface. In addition, the process …
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 31, 1994 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2016.
- 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.