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. 09, 2014
Filed:
Feb. 09, 2010
Applicants:
Fumiaki Kawahara, Hirakata, JP;
Tao Wang, Hirakata, JP;
Shohei Kusada, Hirakata, JP;
Inventors:
Assignee:
Komatsu Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F 9/02 (2006.01); E02F 9/20 (2006.01); B21J 5/00 (2006.01); B21J 5/02 (2006.01); B21K 1/30 (2006.01); B21K 23/02 (2006.01); F16H 55/12 (2006.01); F16H 55/30 (2006.01);
U.S. Cl.
CPC ...
E02F 9/20 (2013.01); B21J 5/00 (2013.01); B21J 5/02 (2013.01); B21K 1/30 (2013.01); B21K 23/02 (2013.01); E02F 9/02 (2013.01); F16H 55/12 (2013.01); F16H 55/30 (2013.01);
Abstract
A method of manufacturing a sprocket segment that is formed by forging as one of a plurality of circumferentially divided parts of a sprocket having a plurality of teeth arranged on an outer peripheral surface of a circular flange, the method includes: forming a material of the sprocket segment into an initial formed state in an initial forming step; and subjecting the sprocket segment in dies to a finish forming process with a tooth trace direction of the sprocket segment as viewed in cross-section of the sprocket segment being inclined relative to a forging direction of the dies in a finish forming step.