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:
Feb. 24, 1998
Filed:
Apr. 01, 1997
Robert W Right, Huntington, CT (US);
Hilario S Costa, Sarasota, FL (US);
John P Hewlin, Bradenton, FL (US);
General Signal Corporation, Stamford, CT (US);
Abstract
There is provided an alarm system for detecting and warning of the presence of alarm and trouble conditions in a plurality of zones. The system comprises a loop controller having supply lines extending to the plurality of zones and a module connected to the supply lines within each zones. The module includes means for detecting whether communication between the module and the loop controller has been disrupted. If an alarm condition occurs in a particular zone, the module initiates communication of the alarm condition to the loop controller. During normal operation, when communication with the loop controller has not been disrupted, the module has shared operations with the loop controller to determine whether an alarm condition exists. When communication with said loop controller has been disrupted, temporarily or otherwise, the module continues to operate independently of the loop controller and determines whether an alarm condition exists.