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. 22, 2015
Filed:
Sep. 26, 2013
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24H 4/02 (2006.01); C21D 7/12 (2006.01); B21D 41/02 (2006.01);
U.S. Cl.
CPC ...
F24H 4/02 (2013.01); C21D 7/12 (2013.01); B21D 41/02 (2013.01);
Abstract
In a heating medium utilizing apparatus utilizing heating medium heated by a heating device, it is aimed to provide a pipe which achieves both of the strength of a connection part to an external pipe and the ease of pipe layout without increasing a manufacturing time. On a tip portion of an internal pipe through which the heating medium or fluid to be heat-exchanged with the heating medium flows, a pipe expanding process to expand a pipe diameter and a pipe shrinking process to shrink the pipe diameter are carried out, thereby forming the connection part to be connected to the external pipe connected to external equipment by work hardening.