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:
Dec. 01, 1987
Filed:
May. 29, 1986
Craig M Cors, Aurora, IL (US);
Joseph C Kadlubowski, Willowbrook, IL (US);
Harper-Wyman Company, Lisle, IL (US);
Abstract
A thermostat for use with an oven of an electric or gas range includes a first electrical contact, a second electrical contact and an actuating assembly including an actuating spring arm for opening and closing an electrical path between the first and second contacts. The spring arm has a fixed end mechanically and electrically coupled to the first electrical contact by a movable support member and a free end that moves between a contacting position and a noncontacting position with the second electrical contact. The spring arm is positioned for movement responsive to both a manually operable mechanism and a temperature responsive mechanism. The movable support member enables a coaxial alignment of the manually operable mechanism and the temperature responsive mechanism and provides a floating support for the spring arm, whereby the need for an over-travel mechanism is eliminated. The manually operable mechanism is movable to an OFF position and to a plurality of ON positions for selecting an oven operating temperature. The temperature responsive mechanism is movable in response to changes in oven temperature. A calibration mechanism accurately determines the position of the actuating assembly relative to the temperature responsive mechanism. In accordance with an important feature of the invention, the calibration mechanism is constructed and arranged to remain substantially unchanged by an impact to the manually operable mechanism.