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. 30, 1985
Filed:
Sep. 16, 1983
Applicant:
Inventors:
Kwangling Chang, Toronto, CA;
Dalpat D Mistry, Mississauga, CA;
Assignee:
NEI Canada Limited, Ontario, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
40449 ; 40447 ; 34081505 ; 34081527 ;
Abstract
A thin disk contrastingly colored on opposite sides is rotatably mounted to rotate about its diameter. A permanent magnet on the disk allows the disk to be driven by a pair of reversibly magnetizable cores. One of the cores is bent to provide a stop which limits the rotation of the disk in either direction. The two limiting positions correspond to the display of the contrastingly colored sides in the viewing direction.