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:
Aug. 28, 1990
Filed:
Apr. 29, 1988
Applicant:
Inventor:
William R Vogt, Rockaway, NJ (US);
Assignee:
Baker Industries, Inc., Parsippany, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; H04Q / ;
U.S. Cl.
CPC ...
340825170 ; 340825360 ; 340502 ;
Abstract
An alarm system includes a controller and a plurality of transponders having different addresses. Certain of the transponders include switch means for monitoring conditions, and latch circuits to retain memory of the switch conditions. The controller includes means for positive recognition of a latched alarm or trouble condition in any transponder, before the clear-alarm signal or clear-trouble signal is sent from the controller to restore the alarm circuits to their original states. This insures that an alarm or trouble condition at a transponder is not 'missed' by inadvertent clearing before a positive recognition is registered in the controller.