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.

Date of Patent:
Jun. 03, 2003

Filed:

Mar. 05, 2001
Applicant:
Inventor:

Hiroichi Hase, Ueno, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26F 3/00 ; B65H 3/510 ;
U.S. Cl.
CPC ...
B26F 3/00 ; B65H 3/510 ;
Abstract

A connecting rod fracture machine is disclosed which mateably inserts a half-split type mandrel into an opening of a large end portion of a connecting rod to expand the opening. The machine comprises first and second support members ( ), ( ) for supporting the connecting rod horizontally, the support members being arranged movably apart from each other on the base of a pallet ( ) for placing the connecting rod ( ) thereon. Moreover, the machine includes a half-split type mandrel ( ), vertically provided on these support members, comprising mandrel half portions ( ), ( ) with each outer peripheral surface thereof being in contact with the inner surface of the opening. The machine also comprises a wedge ( ) for separating the mandrel half portions uniformly apart from each other, the wedge having tapered surfaces in contact with opposite edge surfaces of the mandrel half portions.


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