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:
Nov. 23, 2010
Filed:
Jan. 19, 2006
Masafumi Tsujita, Osaka, JP;
Kozo Kitayama, Osaka, JP;
Kazuhisa Yokoyama, Osaka, JP;
Yumiko Yamashita, Osaka, JP;
Masafumi Tsujita, Osaka, JP;
Kozo Kitayama, Osaka, JP;
Kazuhisa Yokoyama, Osaka, JP;
Yumiko Yamashita, Osaka, JP;
Yanmar Co., Ltd., Osaka, JP;
Abstract
A compact crawler type tractor having an excellent turning feeling is provided. A hydraulic speed change mechanism for turning includes a hydrostatic transmission pump for turning and a hydrostatic transmission motor for turning, and is characterized in that the hydrostatic transmission pump for turning is a variable displacement pump, and an output of the hydrostatic transmission motor for turning is input into a differential mechanism. By combining the hydrostatic transmission pump for turning and the hydrostatic transmission motor for turning and the differential mechanism, an excellent turning feeling can be obtained.