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. 12, 1987
Filed:
May. 23, 1985
Giuseppe Notaro, Pomigliano D'Arco, IT;
Giancarlo Attena, Naples, IT;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Delayed release locking control device, particularly for doors of washing machines and the like, containing inside a case a self-regulating resistive wafer heater of a material having a positive temperature coefficient (PTC) of resistance, a snap-acting bimetallic element connected to a latch or locking member, and terminals which carry electrical current to the PTC wafer heater, wherein the bimetallic element is arranged so means transform the linear snap like movement of an end of the bimetallic element into a rotary movement of the latch mounted on the case to cause it to rotate 90.degree. from a resting position into an operating position when the bimetallic element, selectively heated by the said PTC wafer, abruptly reverses its curvature upon reaching the actuating temperature of reversal and to cause the said latch to return to the resting position when the bimetallic element cools down again to below a reset temperature of reversal and snaps back to its normal curvature.