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:
Sep. 17, 2002
Filed:
May. 31, 2000
Applicant:
Inventors:
Koji Nakamura, Tokyo, JP;
Yutaka Kimura, Tokyo, JP;
Assignee:
Nippon Sanso Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 1/302 ;
U.S. Cl.
CPC ...
F16L 1/302 ;
Abstract
A groove shape and an inspection method capable of securely recognizing existence of a weld flaw of a single butt weld zone by a nondestructive inspection, such as a radiograph test or an ultrasonic test, are provided. A groove shape where a concave portion is formed on a butt surface and a butt surface of pipes which are weldments to be welded is prepared and the weld zone welded by single butt welding is inspected by a nondestructive inspection such as a radiograph test or an ultrasonic test.