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:
Jul. 31, 1984
Filed:
Dec. 06, 1982
Applicant:
Inventor:
John P Browne, Georgetown, CA;
Assignee:
Nei Canada Limited, Toronto, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
40463 ; 34081524 ; 340764 ; 40449 ;
Abstract
An electromagnetic display element is controlled by one or more high remanence cores which have control windings. A circuit is connectable to an A.C. outlet and provides to the windings a D.C. pulse in one sense (to switch the display element in one direction) when the circuit is connected to the A.C. outlet. The circuit included a capacitor charged during such connection. The circuit is designed so that, on its disconnection from the A.C. outlet, the capacitor discharges through the winding in the opposite sense and switches the display element in the opposite direction.