The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1999
Filed:
Dec. 03, 1997
Applicant:
Inventor:
David Alexander Morton, Poole, GB;
Assignee:
AEA Technology plc, Didcot, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62D / ; C01B / ; C01B / ;
U.S. Cl.
CPC ...
252-4 ; 252-7 ; 252-5 ; 423283 ; 423292 ; 423293 ; 423294 ; 4234191 ; 423421 ; 423422 ; 423432 ;
Abstract
A fire suppressant powder with particle sizes less than 5 .mu.m is made by a chemical reaction between a gas or vapour of a first material and a vapour or an aerosol of a second material. For example an aerosol of sodium hydroxide droplets may be reacted with carbon dioxide gas to produce sodium bicarbonate powder; or boron halide vapour may be reacted with steam to form boric acid powder The powder may be used in fire extinguishers either on its own, or combined with other ingredients such as silica and/or alumina, and calcium stearate.