Self-closing filler cap
CA 2316161 C · Owner: Ott, Siegfried · Inventors: Ott, Siegfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an automatically closing tank cap (1) for the filler neck of a fuel tank. The filler neck has a protective flap that is hingeably connected thereto. The tank cap has a sealing ring (2) which is detachably mounted on the filler neck and a sealing flap arrangement (3) that is rotationally mounted on the sealing ring (2) and provided with a ring-shaped component (12), in addition to a sealing flap (15) that is pivotally hinged thereon and a locking device consisting of at least one detent spring (18) and detent lugs (7), whereby the sealing flap arrangement (3) can only be rotated in a single direction and the at least one detent spring (18) is arranged on the ringshaped …
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 December 29, 1998 and granted June 12, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 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.