# US 10,864,398 B2 · Temperature-based fire protection

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- Number: US 10,864,398 B2
- Document ID: US10864398B2
- Status: Granted
- Kind: B2
- Application number: 16/536,296
- Filed: 2019-08-08
- Published: 2019-11-28
- Granted: 2020-12-15
- Earliest claimed: 2011-03-09
- Applicants: C. Douglass Thomas
- Inventors: Alan E. Thomas
- Web page: https://patentgrep.com/patent/US10864398B2

## CPC

- A62C 37/40: with electric connection between sensor and actuator
- A62C 13/64: the extinguishing material being released by means of a valve
- A62C 35/023: {the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas (for foam generation A62C5/02)}
- A62C 37/10: Releasing means, e.g. electrically released
- A62C 37/11: heat-sensitive
- A62C 37/36: an actuating signal being generated by a sensor separate from an outlet device
- A62C 35/02: with containers for delivering the extinguishing substance
- A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10)

## Abstract

A fire detection device and method therefor are able to provide automatic activation so as to extinguish a fire. The fire detection can be rapid and temperature-based. In one embodiment, a heat collector can be provided to enhance thermal responsiveness. Activation of the fire detection device can be electrically induced to release an extinguishing agent at the fire. The activation can be protected such that it is durable and unaffected by vibrations.

## Claims

### Claim 1

A method for fire detection using temperature sensing in an area to be monitored for a fire, said method comprising:
providing at least one fire extinguisher proximate to the area to be monitored for a fire, the fire extinguisher including an extinguishing agent, a temperature sensor and an automatic activation apparatus, the automatic activation apparatus being operatively connected to the temperature sensor;
obtaining a plurality of successive measurements of a sensor electrical characteristic from the temperature sensor;
processing the successive measurements to obtain a stabilized sensor electrical characteristic;
determining if the stabilized sensor electrical characteristic is greater than a predetermined value;
producing a control signal by or for the automatic activation apparatus to initiate release of the extinguishing agent in the area by the fire extinguisher if said determining concludes that the stabilized sensor electrical characteristic is greater than the predetermined value; and
causing release of the extinguishing agent in the area based on the control signal,
wherein the fire extinguisher includes a container that contains the extinguishing agent, the automatic activation apparatus is coupled to the container, and
wherein the container has an upper portion, and the automatic activation apparatus and the temperature sensor are physically coupled to the upper portion of the container.

### Claim 2

A method for fire detection using temperature sensing in an area to be monitored for a fire, said method comprising:
providing at least one fire extinguisher proximate to the area to be monitored for a fire, the fire extinguisher including an extinguishing agent, a temperature sensor and an automatic activation apparatus, the automatic activation apparatus being operatively connected to the temperature sensor;
obtaining a plurality of successive measurements of a sensor electrical characteristic from the temperature sensor;
processing the successive measurements to obtain a stabilized sensor electrical characteristic;
determining whether to activate the fire extinguisher based on at least the stabilized sensor electrical characteristic;
producing a control signal by or for the automatic activation apparatus to initiate release of the extinguishing agent in the area by the fire extinguisher if said determining concludes that the fire extinguisher should be activated; and
causing release of the extinguishing agent in the area based on the control signal,
wherein the fire extinguisher includes a container suitable for containing the extinguishing agent, the automatic activation apparatus and the temperature sensor are mounted to the container.

### Claim 3 (depends on 2)

A method as recited in claim 2, wherein the fire extinguisher is a stand-alone device that can automatically sense and suppress a fire.

### Claim 4 (depends on 1)

A method as recited in claim 1, wherein the fire extinguisher is a stand-alone device that can sense and suppress a fire.