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:
Sep. 01, 1987
Filed:
Sep. 22, 1986
Kenneth I Eke, South Croydon, GB;
Microwave Ovens Limited, Surrey, GB;
Abstract
A microwave oven has a magnetron which launches microwave power into a cavity of the oven through an aperture in the base of the cavity. A metal tray, which may be a shelf or a rotatable turntable is supported above the aperture in a predetermined disposition so that the oven when devoid of food presents a poor power match with the magnetron in terms of effectiveness of power transfer from the magnetron into the oven cavity. As a result, the dielectric load of food items placed in the oven determines the power coupled to the loaded oven from the magnetron and the power transfer automatically increases in proportion to the dielectric food load in the oven. A forced hot air system blows hot air through the cavity, so that food items on the tray are cooked by the simultaneous application of microwave power and the hot air.