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:
May. 15, 2012
Filed:
Jun. 07, 2007
Tomohiro Kudou, Takasaki, JP;
Kazuto Kobayashi, Fujisawa, JP;
Keiichi Horino, Fujisawa, JP;
Kiyoshi Ootsuka, Fujisawa, JP;
Isao Shintou, Fujisawa, JP;
Tomohiro Kudou, Takasaki, JP;
Kazuto Kobayashi, Fujisawa, JP;
Keiichi Horino, Fujisawa, JP;
Kiyoshi Ootsuka, Fujisawa, JP;
Isao Shintou, Fujisawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A drawn cup needle roller bearinghaving a seal ring comprises: a shellhaving a raceway surfaceon an inner circumferential face and also having inward flange portionsin both end portions; a cagehaving a plurality of pocketsin a circumferential direction and worked by cutting; a plurality of needlesretained in the pocketsso that the needles freely rotate along the raceway surface; and a seal ring, the shape of which is cylindrical, arranged inside the shellbetween an end faceof the cageand the inward flange portion. The seal ringcomposes a floating seal and is formed by press working. Due to the foregoing, an excellent dimensional accuracy can be provided and a quantity of lubricant passing through the bearing can be controlled.