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:
Jan. 22, 1980
Filed:
Oct. 17, 1978
Applicant:
Inventors:
Joseph W Schroeder, Clark, NJ (US);
Myron T Krawchuk, Newton, NJ (US);
Assignee:
Foster Wheeler Energy Corporation, Livingston, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29427 ; 29280 ; 29282 ; 279 / ; 29255 ;
Abstract
A method for removing a tube from an opening in a tubesheet in which a containment plug is placed in the tube at a predetermined distance from the end of the tube and a granular material is placed into a portion of the tube between the plug and the latter tube end. A push rod is applied through the tube end and to said granular material to apply a force to the granular material against the plug to cause the granular material to exert a shear force on the inner wall of the tube of a magnitude to push the tube from the tubesheet opening.