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:
Dec. 08, 1981
Filed:
May. 31, 1978
Applicant:
Inventors:
Robert B Machen, Arlington, VA (US);
John E Thompson, Huntsville, AL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ; G08B / ;
U.S. Cl.
CPC ...
340628 ; 340629 ; 340630 ; 116 / ; 116D / ; 2502 / ; 250574 ; 307311 ;
Abstract
This invention is a combination smoke and fire detection and alarm system that comprises a battery powered personal unit and an AC/DC sustaining unit. It provides audible and visual alarms and an emergency light. The personal unit plugs into the sustaining unit for battery charge and provides an additional smoke and fire detector when used in this mode.