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. 01, 2005

Filed:

Jun. 04, 2002
Applicants:

Kenzo Nishida, Saitama-ken, JP;

Norihisa Nihanda, Saitama-ken, JP;

Inventors:

Kenzo Nishida, Saitama-ken, JP;

Norihisa Nihanda, Saitama-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1900 ;
U.S. Cl.
CPC ...
Abstract

There is disclosed a driving force control system for a four-wheel drive vehicle, which is capable of properly controlling the execution and cancellation of a lock mode in which the engagement forces of clutches for distributing a driving force to auxiliary drive wheels are made maximum, thereby reducing frequency and duration of the lock mode. Further, there is disclosed a driving force control system for a four-wheel drive vehicle, which is capable of properly controlling the engagement forces of clutches for distributing a driving force of the main drive wheels to auxiliary drive wheels, thereby causing the clutches to efficiently operate without waste of power.


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