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:
Mar. 17, 1981
Filed:
Dec. 26, 1978
Applicant:
Inventors:
Norman J Webb, Sacramento, CA (US);
David Bories, Fair Oaks, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; F21V / ;
U.S. Cl.
CPC ...
340629 ; 250381 ; 340326 ; 340693 ; 362253 ; 362276 ;
Abstract
A smoke detector is battery operated and may employ an ionization chamber and/or an infrared detector. When the alarm circuit is actuated due to the presence of smoke levels above a predetermined value being sensed by the detector, the alarm is actuated and each of the built in lights is illuminated. An auxilliary light energizeable by said detector is adapted to disengage one of said lights electrically and to be energized at the same time the other of said lights is energized.