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.:

US 7040080 B1

PDF
Full Text
Expired
Date of Patent:
May. 09, 2006

Filed:

Mar. 18, 2003
Applicants:

Kazuhide Okawa, Yawata, JP;

Hiroshi Sunada, Hirakata, JP;

Inventors:

Kazuhide Okawa, Yawata, JP;

Hiroshi Sunada, Hirakata, JP;

Assignee:

Komatsu Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 7/00 (2006.01); B26D 55/20 (2006.01); B21L 5/00 (2006.01); C21D 1/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

There are proposed a track link production method capable of providing markedly improved wear life with good cost performance and a track link produced by this method. To this end, the track link production method includes a heat treatment process (Steps) of applying quenching and low temperature tempering treatment to a whole link material after hot forging (Step), and is designed such that desired machining is applied to the link material (Step) before the heat treatment process (Steps) and such that after the heat treatment process (Steps), tempering (Step) and finish machining (Step) are sequentially applied to some of the parts which have undergone the machining process, the some parts including at least parts where high dimensional accuracy is required.


Find Patent Forward Citations

Okawa, Kazuhide. (2006). Track link production method and track link produced by the same (U.S. Patent No. 7040080). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7040080

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