The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1982
Filed:
Nov. 28, 1980
Larry R Harmon, Louisville, KY (US);
General Electric Company, Louisville, KY (US);
Abstract
A circuit for turning on the constantly energized loads in a microwave oven in response to the initial energization of the magnetron to begin the cooking operation. The circuit includes a delay start relay having a relay coil and a first normally closed relay switch connected in series with a magnetron switching element across a source to respond to the initial turn-on of the magnetron by the switching element. The relay coil also controls a second normally open relay switch connected to close, in response to energization of the relay, a current path including at least one constantly energized microwave oven load. The second relay switch also closes a holding current path for the relay coil to maintain it in an energized condition during the remainder of the cooking cycle. The first relay switch opens after the second relay switch has closed to electrically isolate the relay coil from the switching device. At the end of the cooking cycle a main power switch is opened in response to a signal from the electronic control system to terminate the cooking operation and to reset the delay start relay.