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:
Jul. 20, 1993
Filed:
Mar. 16, 1992
Applicant:
Inventors:
Takashi Ougiya, Tokyo, JP;
Tomoyuki Sato, Tokyo, JP;
Assignee:
Nippon Snaso Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
137312 ; 2513352 ; 251367 ;
Abstract
A valve unit installed in the pipeline equipped with double tubes. A valve body has an inlet passage, an outlet passage and a valve chamber. An inner tube of an inlet double tube is welded to the inlet passage of the inlet double tube, and an outer tube of the inlet double tube is secured to the valve body. The outlet double tube is also attached to the valve body. A cover is welded to the valve body, the inlet double tube and the outlet double tube. Passages are provided for leading leaked gas from the valve chamber to conduits formed between the outer tube and the inner tube of the inlet double tube and the outlet double tube.