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:
Oct. 24, 1978
Filed:
Sep. 22, 1977
James E Staats, Louisville, KY (US);
General Electric Company, Louisville, KY (US);
Abstract
A pair of phase shift devices is provided for sealing a microwave oven against the leakage of microwave energy. Each phase shift device is in the form of a conductive channel member having sides of unequal width. The narrower channel side is positioned parallel to and slightly spaced from an inner surface of the door to define a capacitive gap therebetween. The wider channel side extends perpendicularly outwardly from one of the cavity walls and is effectively electrically connected thereto at the microwave frequency. The devices are particularly adapted to be used in combination with a metal mesh gasket seal and, when so used, not only serve as a backup for the metal mesh gasket but also reduce the likelihood of gasket failure. The nature of the phase shift device permits it to be easily retrofitted to a microwave oven already in service.