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:
Jul. 28, 1998
Filed:
May. 16, 1995
Robert W Right, Huntington, CT (US);
Hilario S Costa, Sarasota, FL (US);
Jan A Braam, Bradenton, FL (US);
General Signal Corporation, Stamford, CT (US);
Abstract
An alarm system for detecting and warning of the presence of alarm and trouble conditions in transponders located in a plurality of zones consisting of a loop controller having a plurality of input signal and power supply lines connected to the respective transponder units, and having a plurality of initiating and indicating devices in a respective plurality of circuits. Further, the system has a module, including a microcontroller, connected in each of the transponder units to the plurality of input lines and to the plurality of circuits, the module being capable of initiating communication of the conditions of the circuits to the loop controller. Moreover, it includes a plurality of smoke detectors, which are connected in the circuits and to respective modules. A load shed arrangement is provided for sensing the alarm conditions of the smoke detectors and reporting their conditions to the loop controller. It also permits, in the first instance, a first of the smoke detectors to draw operating current, but, thereafter, precludes the others of the plurality of smoke detectors from drawing their operating current.