Ignition system and self-heating container
CA 2010612 C · Owner: Nissin Shokuhin Kabushiki Kaisha · Inventors: Nitobe, Masaaki; Kawabata, Choji; Ando, Koki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ignition system for a self-heating container includes a metal plate (12) to which is journalled a shaft (38) carrying a sparking wheel (36) which can be rotated against a flint (40) supported by the plate in order to generate sparks. A screen (18) on the plate adjacent the wheel and flint deflects the sparks through an opening (20) to ignite a pyrogen against which the plate can be disposed. The shaft can be keyed to a spring (50) by means of which it can be rotated for spark generation. The ignition system is self-contained and requires no external power source and the shaft (38) can be maintained disconnected from the spring (50) until required in order to prevent accidental ignition …
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 21, 1990 and granted May 7, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2012.
- 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.