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:
Jun. 11, 1991
Filed:
Apr. 16, 1990
Applicant:
Inventors:
Joel G Feldstein, Plain Township, OH (US);
David E Merker, Minerva, OH (US);
Assignee:
The Babcock & Wilcox Company, New Orleans, LA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
29890031 ; 2940216 ; 294212 ; 228108 ; 228109 ;
Abstract
A sleeve containing an explosive charge which is explosively welded along a tapered end to the inner surface of a tube for repairing a damaged section of the tube. No mechanical support is needed along the outer surface of the tube despite the explosive expansion and welding of the sleeve. The explosive charge is tapered at the end of the sleeve. A charge assembly for carrying the explosive charge includes a flange for centering the sleeve in the tube and for establishing a stand-off distance between the sleeve and the tube.