Precautionary timer for kitchen range surface elements
CA 2239002 C · Owner: Carter, Jack J. · Inventors: Carter, Jack J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A precautionary timer for installation in a kitchen range as a, replacement of a plug-type fuse protecting one of the heating elements of the kitchen range. In a first aspect of the invention the precautionary timer, comprises a threaded fuse stock having first and second electrically conductive terminals set apart from one another and conductive segments, mounted inside the threaded fuse stock and connected to the first and second terminals. A timing unit comprising a low voltage solid state timer and an electronic switch is also mounted inside the threaded fuse stock. The solid state timer is powered by a current transformer sampling power from the current flowing in one of the conductive …
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 May 28, 1998 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.