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:
Aug. 17, 2004
Filed:
Apr. 04, 2002
Masanori Mochizuki, Yao, JP;
Isel Co., Ltd., Yao, JP;
Abstract
A needle roller bearing includes a plurality of needle rollers that each have first and second end portions and that are disposed circumferentially around a shaft, a cylindrical first retainer member having a plurality of first notches each respectively adapted to rotatably support the first end portion of a respective one of the rollers, and a cylindrical second retainer member located spaced apart from and opposite the first retainer member and having a plurality of second notches each respectively adapted to rotatably support the second end portion of a respective one of the rollers. A plurality of voids are provided to form grease-containing spaces between the adjacent rollers and between the first and second retainer members so that the roller bearing is sufficiently lubricated.