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:
Feb. 22, 2005

Filed:

Mar. 24, 2003
Applicants:

Yutaka Tamagawa, Saitama, JP;

Hiroyuki Makino, Saitama, JP;

Yoshihiro Katagiri, Saitama, JP;

Tomoyuki Takano, Saitama, JP;

Atsushi Matsubara, Saitama, JP;

Shinichi Kitajima, Saitama, JP;

Inventors:

Yutaka Tamagawa, Saitama, JP;

Hiroyuki Makino, Saitama, JP;

Yoshihiro Katagiri, Saitama, JP;

Tomoyuki Takano, Saitama, JP;

Atsushi Matsubara, Saitama, JP;

Shinichi Kitajima, Saitama, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H061/06 ;
U.S. Cl.
CPC ...
Abstract

A torque variation control device for a vehicle which has a motor providing rotational torque to a drive shaft of a vehicle, a motor control means controlling the motor based on drive torque, and a rotational velocity detection means detecting a rotational velocity of the drive shaft or a rotational shaft of the motor. The device has a feature that the device includes a torque variation detection means detecting a torque variation of the vehicle caused by a variation of the rotational velocity, and a compensation torque setting means setting compensation torque in an opposite phase relative to the torque variation.


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