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.:
Date of Patent:
Dec. 18, 1990
Filed:
Feb. 10, 1989
Kazuo Samejima, Sakai, JP;
Tetsuaki Hayashi, Sakai, JP;
Niro Bando, Sakai, JP;
Kenji Matsuda, Sakai, JP;
Tsuyoshi Sato, Sakai, JP;
Teruo Shimamura, Sakai, JP;
Toshihiko Hamada, Sakai, JP;
Hironori Tsuchihashi, Sakai, JP;
Yoshikazu Togoshi, Sakai, JP;
Masatami Fukuda, Sakai, JP;
Kubota, Ltd., Osaka, JP;
Abstract
A four wheel steering tractor comprising a grass cutting system vertically movably mounted in a lower space of the tractor between front and rear wheels. The grass cutting system carries gauge wheels disposed at opposite lateral sides in rear regions thereof. An interlocking structure between a steering wheel and the front and rear wheels includes a front drag link extending from a pitman arm toward the left (or right) front wheel, and a rear drag link extending from the pitman arm toward the right (or left) rear wheel. This interlocking structure places the center of tractor turning approximately on a straight line extending through the gauge wheels and adjacent one of the gauge wheels.