Self-contained fire detector with interconnection circuitry
First Claim
1. In detecting device, means for sensing the occurrence of predetermined phenomena, and means responsive to said sensing means for generating an indication of the occurrence of said phenomena, said means for generating including circuit means for being connected with like circuit means of at least one other detecting device, said circuit means when connected operating said means for generating to provide said indication either upon any one of the devices sensing the occurrence of said phenomena, or upon an improper connection between the circuit means of the devices.
0 Assignments
0 Petitions
Accused Products
Abstract
A fire detector for being connected in a system with a plurality of detectors, is characterized by interconnect circuitry for connecting with like circuitry of the other detectors. The interconnect circuitry causes all of the detectors to generate an alarm in response to any one of the detectors sensing combustion, and to generate an indication of an improper connection between the detectors.
-
Citations
13 Claims
- 1. In detecting device, means for sensing the occurrence of predetermined phenomena, and means responsive to said sensing means for generating an indication of the occurrence of said phenomena, said means for generating including circuit means for being connected with like circuit means of at least one other detecting device, said circuit means when connected operating said means for generating to provide said indication either upon any one of the devices sensing the occurrence of said phenomena, or upon an improper connection between the circuit means of the devices.
- 8. In a system of detecting devices, at least a pair of detecting devices, each having means for sensing the occurrence of predetermined phenomena, and means responsive to said sensing means for generating an indication of the occurrence of said phenomena, each said means for generating including circuit means, said circuit means of said detectors being interconnected and operating said responsive means of each said device to generate said indication either upon said sensing means of any one of said devices sensing said phenomena, or upon said circuit means of said devices being improperly connected in circuit.
Specification