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:
Apr. 07, 1992
Filed:
Mar. 09, 1990
Applicant:
Inventor:
Ronald Sisselman, Aurora, IL (US);
Assignee:
Pittway Corporation, Northbrook, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340693 ; 116315 ;
Abstract
A deflectable battery retaining member in a battery powered unit blocks the improper insertion of a battery into the unit. Further, the same member in the absence of a battery inhibits engagement of the cover of the unit thereto providing a visual indicator of the missing battery.