U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

System for the early detection of fires

Patent 5751209 Issued on May 12, 1998. Estimated Expiration Date: Icon_subject May 12, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3099825

3703721

Double detection circuit for conserving energy in fire detection systems and the like
Patent #: 4027302
Issued on: 05/31/1977
Inventor: Healey ,   et al.

Alarm system having plural diverse detection means
Patent #: 4319229
Issued on: 03/09/1982
Inventor: Kirkor

Cooking, fire, and burglar alarm system
Patent #: 4633230
Issued on: 12/30/1986
Inventor: Tam

Fire detection system
Patent #: 4725819
Issued on: 02/16/1988
Inventor: Sasaki ,   et al.

Fire monitoring system
Patent #: 4785284
Issued on: 11/15/1988
Inventor: Kimura

Method of detecting fire in an early stage
Patent #: 5005003
Issued on: 04/02/1991
Inventor: Ryser, et al.

Self-contained apparatus for emergency lighting incorporating alarm systems for fire, gas and the like
Patent #: 5146209
Issued on: 09/08/1992
Inventor: Beghelli

Fire alarm system Patent #: 5168262
Issued on: 12/01/1992
Inventor: Okayama

Inventors

Application

No. 345735 filed on 11/20/1994

US Classes:

340/286.05, Fire340/517, Selection from a plurality of sensed conditions340/522Combined for response

Examiners

Primary: Hofsass, Jeffery
Assistant: Woods, Davetta

Attorney, Agent or Firm

International Class

G08B 001/00

Foreign Application Priority Data

1993-11-22 CH

Abstract

A fire detection system contains several detectors connected to a control center, some of which are fitted with at least two sensors for monitoring different fire parameters. Preferably, one sensor is a thermal sensor and another is an optical sensor. An arrangement for processing the sensor signals is located within each of the detectors. It contains a microcontroller for conditioning the sensor signals and for signal processing, with the aim of generating alarm signals. The alarm signals are obtained in a neural network.

Other References

  • Nakanishi, Shinji et al, "Intelligent Fire Warning System applying Fuzzy Theory", IECON'91, 1991 International Conference on Industrial Electronics, Control and Instrumentation, Oct. 28-Nov. 1, 1994, pp. 1561-156
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