Device for protecting turntable shaft of microwave oven
CA 1290405 C · Owner: Chin, Seok Woong · Inventors: Chin, Seok Woong; Lee, Eon Ho
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for protecting the turntable shaft of a microwave oven, to prevent the turntable shaft composed of resinous material from fusing during the operation of the microwave oven. A protective plate is formed on the lower surface of the turntable in such a manner that there is formed a supplementary cavity in which the impedance is maximum at the inlet and a choke cavity, in which the impedance is minimum at the inlet. The concentrate of the microwave energy around the shaft is eliminated by provid-, ing a range of dimensions of both the cavities based on the characteristics of the microwaves.
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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
- Granted October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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.