US Patent 7237976 Key-engaging part structure

Patent 7237976 was granted and assigned to Sumitomo Heavy Industries on July, 2007 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Sumitomo Heavy Industries

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7237976

Date of Patent

July 3, 2007

Patent Application Number

10115428

Date Filed

April 4, 2002

Patent Primary Examiner

‌

Daniel P. Stodola

Patent abstract

A key-engaging part structure which realizes an efficient formation of a key-engaging part in an axial-hole member is provided. A key-engaging through hole is formed in a key-engaging part of an axial-hole member while both and portions of the axial-hole member leave intact such that the key-engaging through hole is bored through the axial-hole member in the radial direction. The key-engaging part is formed using this through hole.

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