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.

Date of Patent:
Dec. 25, 2007

Filed:

Aug. 25, 2004
Applicants:

Shinji Takayanagi, Saitama, JP;

Yohei Makata, Saitama, JP;

Hiroyoshi Kobayashi, Saitama, JP;

Inventors:

Shinji Takayanagi, Saitama, JP;

Yohei Makata, Saitama, JP;

Hiroyoshi Kobayashi, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D 61/06 (2006.01); B62D 23/00 (2006.01); B62D 21/00 (2006.01); B62K 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A left drive shaft and a right drive shaft each include an inside constant velocity joint and an outside constant velocity joint with a ball spline mechanism provided between the inside constant velocity joint and the outside constant velocity joint for enabling the distance between the inside constant velocity joint and the outside constant velocity joint to be contracted and extended. The ball spline mechanism includes a spline shaft having an outer circumferential surface provided with a plurality of axial grooves extending in the axial direction, a tubular portion surrounding the periphery of the spline shaft and having an inner circumferential surface provided with a plurality of axial grooves extending in the axial direction and a plurality of balls capable of rolling while being fitted in the axial grooves and in the axial grooves. In addition, a left lower arm and a right lower arm are formed into an A-shape and are supported by a lower part of a rising portion and a lower end of the downwardly extending portion via a lower supporting shaft.


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