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:
Dec. 03, 1985
Filed:
Jul. 29, 1982
Applicant:
Inventor:
Toshio Yoshida, Kobe, JP;
Assignee:
Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285 55 ; 285189 ; 285286 ; 285416 ; 285334 ; 22826313 ;
Abstract
In a corrosion-resistant, double-wall pipe structure formed by tightly fitting a stainless-steel inner pipe in an outer pipe, the inner pipe at any portion thereof which is liable to be adversely affected by heat due to heat processing is replaced by an inner tube of a special metal having corrosion resistance which is not easily impaired by the heat, the inner tube being joined integrally to the remainder portion of the inner pipe of the stainless steel. Examples of the special metal are Inconel 625, Incoloy 825, and Hastelloy.