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:
Sep. 26, 1978
Filed:
Apr. 16, 1976
Applicant:
Inventors:
Aaron A Galvin, Lexington, MA (US);
L Dennis Shapiro, Chestnut Hill, MA (US);
Valdemar Skov, Wayland, MA (US);
Assignee:
American District Telegraph Company, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340502 ; 340506 ; 340525 ;
Abstract
A multi-mode intrusion alarm system having three different operating modes for providing different indications of present and past occurrence of alarm signals from a plurality of sensors. The different modes allow determination of which sensor produced the alarm signal, investigation of the protected area after occurrence of an alarm signal without disturbing such determination and resetting of the system. The system can include circuitry for automatic mode selection and for providing a warning when the system has not been properly reset.