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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.:

US 9434209 B1

PDFFull Text
Date of Patent:
Sep. 06, 2016

Filed:

Jul. 31, 2014

Wheel bearing apparatus

Applicant:

Ntn Corporation, Osaka, JP;

Inventor:

Mitsuru Umekida, Iwata, JP;

Assignee:

NTN Corporation, Osaka-shi, JP;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Thomas R Hannon

Int. Cl.
CPC ...
F16C 35/06 (2006.01); B60B 27/00 (2006.01); C21D 9/32 (2006.01); F16C 35/063 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C21D 9/40 (2006.01); C21D 1/06 (2006.01); F16C 41/00 (2006.01); F16C 19/38 (2006.01); C21D 1/42 (2006.01);
U.S. Cl.
CPC ...
B60B 27/0026 (2013.01); B60B 27/0084 (2013.01); C21D 1/06 (2013.01); C21D 9/32 (2013.01); C21D 9/40 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); F16C 35/063 (2013.01); B60B 27/00 (2013.01); B60B 27/001 (2013.01); B60B 27/0068 (2013.01); B60B 27/0078 (2013.01); B60B 2310/54 (2013.01); B60B 2900/311 (2013.01); B60B 2900/321 (2013.01); C21D 1/42 (2013.01); F16C 19/386 (2013.01); F16C 41/007 (2013.01); Y02P 10/253 (2015.11);
Abstract

A wheel bearing apparatus has an outer member, an inner member including a wheel hub and at least one inner ring, and double row rolling elements freely rollably contained between the inner and outer raceway surfaces of the inner and outer members via cages. A hardened ring-shaped gear member is mounted on an end of a cylindrical portion of the wheel hub. The gear member is formed with a gear portion on its outer circumference and with a splined portion on its inner circumference. The splined portion engages a hub-splined portion formed on the outer circumference of the cylindrical portion of the wheel hub. A contacting surface of the gear member and a contacting surface of the inner ring that abut against each other are ground. The inner rings are axially immovably secured under a condition where a predetermined amount of a bearing pre-stress is applied to the inner rings via the gear member.

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