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:
Jan. 01, 2013

Filed:

Apr. 24, 2007
Applicants:

Shigemi Tsukamoto, Fujisawa, JP;

Katsuyuki Kawamura, Fujisawa, JP;

Hirohide Ishida, Fujisawa, JP;

Tatsuo Wakabayashi, Fujisawa, JP;

Inventors:

Shigemi Tsukamoto, Fujisawa, JP;

Katsuyuki Kawamura, Fujisawa, JP;

Hirohide Ishida, Fujisawa, JP;

Tatsuo Wakabayashi, Fujisawa, JP;

Assignee:

NSK Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 53/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

With respect to an outer ringin which a diameter Dof a first outer ring racewayis greater than a diameter Dof a second outer ring raceway(D>D), a method is realized which facilitates the entry of a grinding toolinto an inner side of the outer ring when these both outer ring racewaysandare subjected to a grinding process. The grinding toolis made to enter the inner side of the outer ringthrough an opening on a side close to the first outer ring raceway


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