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:
Mar. 17, 2015
Filed:
Jul. 29, 2013
Applicant:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Inventors:
Keisuke Kamitani, Tokyo, JP;
Kazuhiko Kamo, Tokyo, JP;
Jiro Kasahara, Tokyo, JP;
Yukihiro Sakaguchi, Tokyo, JP;
Assignee:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B21D 9/15 (2006.01); B21D 26/02 (2011.01); B21D 26/033 (2011.01); B21D 39/08 (2006.01);
U.S. Cl.
CPC ...
B21D 26/033 (2013.01); B21D 39/08 (2013.01);
Abstract
A pipe diameter expansion apparatus includes: a hollow cylindrical member that can be placed in a pipe filled with water, and through which a coolant medium having a lower temperature than a freezing point of the water flows from one end to the other end; at least two plate-like fins provided to protrude outward from the cylindrical member; and a cold-heat insulator that is provided between the two fins, and reduces cold-heat transmission between inside and outside the cylindrical member.