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:
Aug. 21, 1990
Filed:
Jan. 20, 1989
Thomas Krummer, Weissenburg, DE;
Diehl GmbH & Co., Nuremberg, DE;
Abstract
An electrical switch incorporating a pushbutton, which is actuatable in opposition to the biasing action of a spring. A permanent magnet is provided in the switch housing as an axial extension of the pushbutton; having a coil arranged opposite thereof which has its distal end surface contacting against an acoustic sensor which is in connection with the contact pins. Hereby, a switching pusher can axially connect with the pushbutton which projects from the housing, at the end of which pusher there is mounted a permanent magnet interiorly of the housing, which is arranged at an axial spacing with regard to the facing end surface of the coil in the unactuated condition of the switch, and in the presence of a depressed pushbutton, is arranged with only a narrow gap axially in front of the coil core.