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. 20, 1990
Filed:
Nov. 06, 1987
Applicant:
Inventors:
Helmut Gottling, Isernhagen, DE;
Ralf Kook, Hanover, DE;
Rudolf Moller, Gehrden, DE;
Peter Muller, Hanover, DE;
Gerhard Scharnowski, Gehrden, DE;
Assignee:
WABCO Westinghouse Steuerungstechnik GmbH, Hanover, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338176 ; 338 / ; 338 / ;
Abstract
An electrical apparatus is provided for use with a potentiometer or variable resistance element which does not require a mechanical connection between a contact member and an activating mechanism. This is accomplished by using a magnet in at least a portion of either the contact member or the activating mechanism while constructing at least a portion of the other of such contact member and the activating mechanism of a ferromagnetic material.