# US 7,467,666 B2 · Applying solid carbon dioxide to a target material

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- Number: US 7,467,666 B2
- Document ID: US7467666B2
- Status: Granted
- Kind: B2
- Application number: 11/542,324
- Filed: 2006-10-02
- Published: 2007-07-12
- Granted: 2008-12-23
- Earliest claimed: 2005-10-03
- Assignees: Cryo Response, Inc.
- Inventors: Albert F. De Mange; Christopher J. Noel; Gerald P. Zeilhofer
- Web page: https://patentgrep.com/patent/US7467666B2

## CPC

- A62C 3/02: for area conflagrations, e.g. forest fires, subterranean fires
- A62C 3/0292: {by spraying extinguishants directly into the fire (A62C3/0242 takes precedence)}
- A62C 99/0027: {Carbon dioxide extinguishers}
- 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

Delivery of pelletized carbon dioxide (dry ice) to a target material from a distance, by projection, spraying, or aerial dropping the pelletized carbon dioxide onto the target material using gravity. Delivery may be made by a mobile apparatus. The types of target material with which the present invention is designed to apply may include, e.g., hydrocarbon material, hazardous material, burning material, and the like. The carbon dioxide may be pelletized to diameters in a size range of about 3 mm to 100 mm.

## Claims

### Claim 1

A fire and/or hazardous material abatement support structure for applying carbon dioxide pellets of a diameter greater than 3 mm to a fire and/or hazardous material, comprising:
a pelletizer disposed on the support structure producing carbon dioxide pellets having a diameter greater than 3 mm and configured for connection to a source of liquid carbon dioxide;
a storage device disposed on the support structure storing the carbon dioxide pellets having a diameter greater than 3 mm; and
a delivery device disposed on the support structure projecting or spraying the carbon dioxide pellets having a diameter greater than 3 mm, wherein the delivery device utilizes a source of nitrogen projecting or spraying the carbon dioxide pellets having a diameter greater than 3 mm, so that the support structure distributes pellets used to extinguish a fire and/or contain a hazardous material.

### Claim 2 (depends on 1)

The support structure of claim 1, wherein the source of nitrogen is an air extraction unit.