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. 28, 1976
Filed:
Nov. 17, 1975
John H Heidorn, Dayton, OH (US);
James A Bernard, Dayton, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A power-operated vertically adjustable shelf is supported by shelf arms in cantilevered fashion at the rear of an appliance cabinet by a gear and roller on each shelf arm, with each gear and roller vertically offset engaging a vertically extending toothed rack and a roller track. Electric drive means, carried by the cabinet, powers a vertically extending drive shaft of which the torque is transmitted to the shelf operating gear through a normally disengaged clutch which is engaged by user operating means adjacent the front of each shelf whereby powered vertical movement of the shelves is achieved. A dual position selector shelf switch is operable upon opening the door to permit the user to select up or down power shelf movement with the shelf switch being neutralized upon closing of the cabinet door.