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:
Mar. 29, 1994
Filed:
Apr. 14, 1992
Applicant:
Inventor:
Ekkehard Sachs, Spaichingen, DE;
Assignee:
Marquardt GmbH, Rietheim-Weilheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200513 ;
Abstract
A pushbutton switch having a frustoconical switch cap of plastic, which acts as a restoring element, is proposed, which switch cap permits a very exact switching operation in comparison with known switch caps of rubber or silicone. In order to achieve optimum switching characteristics with defined switching displacements and forces, a thermoplastic elastomer is used which, as a block copolymer, has special properties regarding the flexibility of the switch cap. In this case, the material selection and dimensions of the switch cap determine the special properties of the pushbutton switch.