Rolling bearing cage and rolling bearing

US8944693B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8944693-B2
Application numberUS-201214343107-A
CountryUS
Kind codeB2
Filing dateSep 5, 2012
Priority dateSep 6, 2011
Publication dateFeb 3, 2015
Grant dateFeb 3, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

Each pocket of a cage have a cylindrical surface formed by a cylindrical shape having a center line extending in a radial direction, and a tapered surface contiguous with the cylindrical surface. A radial displacement of the cage is regulated by a contact of the ball with the tapered surface. In a state in which the ball is in contact with the tapered surface, an angle formed by an imaginary line extending through a contact point between the ball and the tapered surface and the center of the ball, and an imaginary perpendicular plane extending through the center of the ball and perpendicular to the radial direction, is larger than a friction angle defined by a friction coefficient at the contact point between the ball and the tapered surface.

First claim

Opening claim text (preview).

The invention claimed is: 1. A rolling bearing cage of a ball guided type, the cage comprising a plurality of pockets provided at given intervals in a circumferential direction to retain a plurality of balls respectively, wherein each pocket of the cage comprises a cylindrical surface formed by a cylindrical shape having a center line extending in a radial direction, and at least one tapered surface contiguous with the cylindrical surface on a radially inner side or a radially out…

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What does patent US8944693B2 cover?
Each pocket of a cage have a cylindrical surface formed by a cylindrical shape having a center line extending in a radial direction, and a tapered surface contiguous with the cylindrical surface. A radial displacement of the cage is regulated by a contact of the ball with the tapered surface. In a state in which the ball is in contact with the tapered surface, an angle formed by an imaginary li…
Who is the assignee on this patent?
Katsuno Yoshiaki, Nsk Ltd
What technology area does this patent fall under?
Primary CPC classification F16C33/4676. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).