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:
Jun. 28, 1988
Filed:
Mar. 07, 1986
Applicant:
Inventor:
Wilbert E Beller, Park Ridge, IL (US);
Assignee:
Eaton Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 31 ; 335256 ; 361 93 ; 361187 ;
Abstract
A magnetically latching switch assembly adapted for use with a motor including first and second serially connected coils wound around a frame to generate oppositely directed magnetic flux through the frame. The coils are arranged so that for the normal run current of the motor, the net magnetic flux is sufficient to magnetically latch the switch against the restoring force of a spring. When the motor is stalled, the increased current is sensed and a portion of the current is diverted from one of the coils to reduce the net magnetic flux and terminate the latching effect. Current sensing and diverting is accomplished by a diode connected across the one coil.