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:
Jul. 30, 1996
Filed:
Apr. 06, 1995
Susumu Takano, Kanagawa-ken, JP;
Mutsuo Kubo, Kanagawa-ken, JP;
NSK Ltd., Tokyo, JP;
Abstract
A combination of two angular type ball bearings provided in a face-to-face arrangement to form a ball bearing unit in which the diameter of the balls of the second ball bearing is less than the diameter of the balls of the first ball bearing. This ball bearing unit is used at high speed to support a substantially unidirectional axial load. When this axial load is applied to the ball bearing unit, only the first ball bearing supports the axial load. The product of the pitch circle diameter of the row of balls in the ball bearing unit and the rotating speed of the inner ring of the ball bearing unit is in the range of 800,000 to 3,000,000 mm.rpm, while the radial load is up to one fifth the axial load.