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:
Jan. 16, 1979
Filed:
May. 02, 1977
John R Kelley, Dayton, OH (US);
Harold G Wyse, Dayton, OH (US);
Other;
Abstract
A thermally sensitive switch is provided with two parallel lead wires or conductive members which are confined within a two section insulated housing. Electrical continuity between members is established by a conductive contact element which bridges the two conductive members to provide a continuous electrical path. The contact element is held in place by a temperature sensitive material which changes state at a predetermined temperature and by a spring element which exerts a force on the pellet through the contact element. When the temperature sensitive material changes state, the spring force drives the contact between the conductive members to effect a snap-action instantaneous interruption of the electrical circuit. The construction and assembly of the components provide for minimizing the production cost of the switch.