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:
Apr. 13, 2004
Filed:
Dec. 20, 2002
Takayuki Yatabe, Kanagawa, JP;
Hisato Yamamoto, Kanagawa, JP;
Yasuhisa Terada, Kanagawa, JP;
Takashi Ogawa, Kanagawa, JP;
Tsuyoshi Koshi, Kanagawa, JP;
Hiroya Achiha, Kanagawa, JP;
Shoji Noguchi, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
An outer ring is formed so as to have a large thickness and the pitch circle diameters Dp of balls are shifted to the inside diameter side of the present ball bearing. The radiuses of curvature Ro, Ri of the section shapes of an outer ring raceway and an inner ring raceway are increased with respect to the diameter Db of the balls . At the same time, the diameter Db of the balls and the thickness of an inner ring are not set excessively small to thereby be able not only to prevent Brinell impressions from being formed in the outer ring raceway but also to prevent the inner ring from being damaged or cracked.