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:
Feb. 01, 1983
Filed:
Jan. 02, 1981
Applicant:
Inventor:
William B Smith, Berea, OH (US);
Assignee:
The Pipe Line Development Co., Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
F16L / ; B23D / ;
U.S. Cl.
CPC ...
137 15 ; 29413 ; 30100 ; 83863 ; 137318 ; 138 94 ;
Abstract
The wall of a pipe is prepared for a subsequent cutting operation by a double-edged shear plate, by cutting axially spaced circumferential notches in such wall with a flexible strand cutter capable of operating in the limited confines of a housing designed in the rectangular pattern of the shear plate. The flexible strand cutter advantageously employs roller cutters on a power transmission type chain which is tensioned against and moved circumferentially over the wall of the pipeline.