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:
Oct. 12, 1993
Filed:
Nov. 02, 1992
Applicant:
Inventor:
Nicholas M Nanos, Morton Grove, IL (US);
Assignee:
General Binding Corporation, Northbrook, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318739 ; 318747 ; 318751 ; 318782 ; 318799 ; 318484 ;
Abstract
A control circuit for connection to a split capacitor motor automatically switches to reverse operation when the motor is caused to stop or slow unacceptably by a heavy load. During operation, a voltage is maintained across a relay winding which is sufficient to hold the relay contacts in the normally open position. A slowing or stopping of the motor causes a reduction the voltage across the relay winding, which permits the relay contacts to switch to a configuration that reverses the phase of the current through the main and auxiliary windings of the motor, thereby reversing the motor.