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. 12, 2013
Filed:
Sep. 24, 2008
Applicant:
Yasuji Kawamata, Oyama, JP;
Inventor:
Yasuji Kawamata, Oyama, JP;
Assignee:
Showa Denko K.K., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B21D 39/00 (2006.01); B29C 65/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A connecting deviceis provided with a diedivided into a plurality of die segmentscentering around a wedge hole portionin a circumferential direction, and a mandrel. Each die segmentof the dieis moved radially outward of the pipeby a mandrelto expand an expansion target portionof the pipe. The die segmentis equipped with apiecehaving a first pressing protruded portionfor pressing one of two predetermined portionsandof the pipe, a die segment main bodyhaving a second pressing protruded portionfor pressing the other portion, and connection meansfor connecting the pieceand the die segment main bodyin a detachable manner.