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:
May. 28, 1991
Filed:
Feb. 23, 1989
Applicant:
Inventors:
Edward P Kozek, Woodbury, CT (US);
Charles R Ruskouski, Danbury, CT (US);
Steven J Altamura, Scarsdale, NY (US);
Assignee:
Dual-Lite, Inc., Newtown, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
40570 ; 362240 ; 362812 ;
Abstract
In an exit sign, a plurality of rugged low voltage incandescent lamps are mounted on a printed circuit board to provide proper illumination. The lamps are positioned to provide indirect illumination to the 'EXIT' stencilling of the exit sign. The exit sign can be adapted for use with both low voltage alternating current and low voltage emergency direct current. Because the lamps are driven at low voltage and are resistant to failure due to vibration, etc., they can be expected to attain a long life in service.