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:
Mar. 01, 2011
Filed:
Jan. 23, 2006
Kunihiko Sakamoto, Chikugo, JP;
Kunihiko Sakamoto, Chikugo, JP;
Yanmar Co., Ltd., Osaka, JP;
Abstract
It is an object, in a hydraulic stepless transmission, to change capacity of a hydraulic pump to thereby make output characteristic different between forward and reverse travel and obtain efficient output characteristics. In the hydraulic stepless transmission formed of the hydraulic pumpand a variable displacement-type hydraulic motorand including control meansfor carrying out capacity control based on a load received by the hydraulic stepless transmission, a pressure control valveis connected to control pressure portions of the control meansfor carrying out the capacity control according to pressure in a hydraulic circuiton a discharge side of the hydraulic pumpto carry out the capacity control of the variable pump and the motor