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. 03, 1985
Filed:
May. 25, 1984
Willi Klotz, Unterreichenbach, DE;
Microtherm GmbH, Pforzheim, DE;
Abstract
In a thermal switch for temperature control of electrical heating apparatus, a contact reed is integral with a terminal and is rigid except for a relatively short longitudinal area so that, when the contact reed is acted upon by a bimetallic disk spring, a hinge type movement of the contact reed will result. The integral rigid design of this component designed as terminal and contact reed makes keeping the geometric conditions within the thermal switch, especially the space between the contact reed and the bimetallic disk spring, at closer tolerances, much easier than with prior leaf springs used as a contact reed. Accomplished thereby is a more dependable switching performance and thus a quality improvement in large-scale manufacture and a reduction in manufacturing costs. A particularly simple design uses instead of rivets, which serve to fasten the two terminal lugs to the support structure, stamped shapes stamped out of the terminal lugs so that the total number of parts for the thermoswitch can be reducted to four, with the bimetallic disk, as opposed to prior solutions, not having a contact. The invention also permits a simple retention and guidance of the bimetallic disk spring, permitting an easy insertion and/or replacement of the bimetallic disk spring in the completely assembled thermal switch.