# US 8,783,374 B2 · Fire extinguishing foam, methods and systems

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,783,374 B2
- Document ID: US8783374B2
- Status: Granted
- Kind: B2
- Application number: 13/317,755
- Filed: 2011-10-28
- Published: 2012-05-03
- Granted: 2014-07-22
- Earliest claimed: 2010-10-29
- Applicants: Alvin Rains; Shan L. Rains
- Inventors: Alvin Rains; Shan L. Rains
- Web page: https://patentgrep.com/patent/US8783374B2

## CPC

- A62D 1/0035: {Aqueous solutions}
- A62D: CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS

## Abstract

An improved fire extinguishing, suppressing, and preventing mixture, method, and system for various classifications of fires which exhibits superior characteristics to knock down the fire, helps to prevent flash and re-ignition, and contains only a trace amount of fluorochemicals. When the mixture is spread on burning surfaces, including fuel and other liquid surfaces, the agent suppresses vaporization, extinguishes flames and helps to suppress re-ignition and reflash of the fire. The mixture is friendly to the environment. It causes no harmful reaction to a burn victim and aids in cooling the victim to slow the burning of skin. The mixture can be washed off a bum victim with soap and water. Other embodiments are described herein.

## Claims

### Claim 1

A fire extinguishing, suppressing, or preventing composition comprising at least four components:
(a) diethylene glycol monobutyl ether C4H9O(CH2CH2O)2H, and
(b) an antimicrobial preservative, and
(c) polyethylene glycol octylphenol ether surfactant, and
(d) fresh water
whereby an environment-friendly mixture to suppress vaporization, extinguish flames and suppress re-ignition and reflash of fire is provided.

### Claim 2 (depends on 1)

The composition of claim 1, wherein said surfactant comprises octylphenoxypolyethoxyethanol.

### Claim 3

A method for one or more of extinguishing, suppressing or preventing a fire in a space by introducing to the space a composition comprising at least four components:
(a) diethylene glycol monobutyl ether C4H9O (CH2CH2O)2H, and
(b) an antimicrobial preservative, and
(c) polyethylene glycol octylphenol ether surfactant, and
(d) fresh water.

### Claim 4 (depends on 3)

The method of claim 3 wherein said surfactant comprises octylphenoxypolyethoxyethanol.

### Claim 5

A fire extinguishing, preventing or suppressing system configured to introduce to a space a composition comprising at least four components:
(a) diethylene glycol monobutyl ether C4H9O (CH2CH2O )2H, and
(b) an antimicrobial preservative, and
(c) polyethylene glycol octylphenol ether surfactant, and
(d) fresh water.

### Claim 6 (depends on 5)

The system of claim 5 wherein said surfactant comprises octylphenoxypolyethoxyethanol.