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:
May. 09, 1978
Filed:
Mar. 18, 1976
Daniel Zwillinger, New Boston, NH (US);
McGraw-Edison Company, Elgin, IL (US);
Abstract
The invention relates to hinged supports using torsion bars for the doors of microwave ovens. For light-weight doors, the torsion bars extend beyond the sides of the doors and interlock with the oven structure to constitute the sole supporting means. For heavier doors, the torsion bars are provided with pivot shaft extensions mounted in bearings in the doors, which interlock with the oven structure. The torsion bars are preloaded to bias the doors closed in the light-weight door constructions, and operate in all cases to reduce the dead weight of the doors when in their open, horizontal positions. The side extensions interlockingly engage brackets in the oven structure aided by the weight of the doors, and permit the doors to be lifted readily therefrom. Although the invention is especially useful and is herein particularly described in connection with microwave ovens, no unnecessary limitation thereto is intended because this invention has application also to other appliances such as conventional ovens, dishwashers, etc.