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. 31, 1991
Filed:
Aug. 13, 1990
Glenn F Wehl, North Canton, OH (US);
Portage Electric Products, Inc., North Canton, OH (US);
Abstract
A thermostatic switch has a bimetallic member formed with an undulated section for causing both an axial and a radial displacement of the bimetallic member such that each time the member expands a first contact wipes across a second contact. By providing sufficient undulations, the wiping action occurs prior to and after separation of the contacts preventing the build-up of a resistive residue which could interfere with switch operation. Utilizing the undulated bimetallic section in a thermostatic switch increases the life of the contacts and reduces variations in temperature responsiveness.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile