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:
Apr. 06, 1993
Filed:
Oct. 01, 1991
Applicant:
Inventor:
Barry L Butler, Solana Beach, CA (US);
Assignee:
Science Applications International Corporation, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62C / ;
U.S. Cl.
CPC ...
169 46 ; 166312 ; 169 52 ; 169 69 ;
Abstract
Apparatus and method for extinguishing oil well fires by plugging a wellhead pipe from which oil, gas and a fire flame front are emanating including centering and fluid ballasting a capper over the wellhead pipe, forcibly inserting the capper into the wellhead pipe to seal the wellhead pipe and introducing mud through the capper into the wellhead pipe to 'kill' the fire. The apparatus includes the capper, fluid ballast and pressure exerting apparatus and plugging apparatus.