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:
Apr. 30, 1996

Filed:

Apr. 18, 1994
Applicant:
Inventors:

Hironori Tsuchihashi, Sakai, JP;

Osami Fujiwara, Sakai, JP;

Tuyoshi Satou, Sakai, JP;

Yoshikazu Togoshi, Sakai, JP;

Toshihiko Hamada, Sakai, JP;

Yoshihiro Kawahara, Sakai, JP;

Niro Bando, Sakai, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ; B60K / ; G05G / ; G05G / ;
U.S. Cl.
CPC ...
180247 ; 1921 / ; 74478 ; 74512 ;
Abstract

A running control structure for a lawn tractor switchable between a two-wheel drive mode and a four-wheel drive mode. The control structure includes a first driving device for driving a first pair of wheels, a second driving device for driving a second pair of wheels, and a clutch mechanism for switching the second driving device between a driving state and a non-driving state. The clutch mechanism has a controller for operating a clutch, and a spring for biasing the controller to a position corresponding to the non-driving state of the second driving device.


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