Rolling bearing for belt driven continuously variable...

Details Rolling bearing for belt driven continuously variable... Rolling bearing for belt driven continuously variable...

2007-03-13

2007-03-13

Johnson, Vicky A. (Department: 3682)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

C384S492000

Reexamination Certificate

active

10947393

ABSTRACT:
A bearing is provided to have sufficient durability even when CVT fluid having a low viscocity is used, with its flow rate kept small, so that the efficiency of the belt-type continuously variable transmission is improved.The material of the races including the outer race4is made of a iron-base alloy containing, by weight, C of from 0.15% to 0.5%, Si of 0.1% to 1.5%, Mn of 0.1% to 1.5%, and Cr of 0.5% to 3.0%. This material is subjected to carbonitriding, quenching, tempering and quenching finish. The surface portion of the outer raceway6on the inner peripheral surface of the outer race4is formed with a surface layer containing C of from 0.8 weight % to 1.2 weight % and N of from 0.05 weight % to 0.50 weight %.

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International Search Report dated Jul. 22, 2003.
International Preliminary Examination Report dated Nov. 2, 2004 (Translation).

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