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:
Aug. 15, 1989
Filed:
Mar. 13, 1989
Applicant:
Inventors:
Yoshimi Okabe, Tokyo, JP;
Katsumi Kikuchi, Tokyo, JP;
Assignees:
The Tokyo Electric Power Co., both of, JP;
Ishikwajima-Harima Jukogyo Kabushiki Kaisha, both of, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
738658 ;
Abstract
When a measuring instrument is inserted through a header into a boiler heat-transfer tube so as to carry out inspection, a guide for insertion of the measuring instrument is positively and correctly aligned with a heat transfer tube hole of the header.