Title:
静油圧式無段変速装置
Document Type and Number:
Japanese Patent JP4324165
Kind Code:
B2
Abstract:
A hydrostatic stepless transmission ( 1 ) comprising axial piston type hydraulic pump ( 30 ) and hydraulic motor ( 40 ) is constructed that a pump side plunger block ( 31 ) faces to a motor side plunger block ( 41 ) through their rotary sliding surfaces ( 33 and 44 ), a plurality of communication passages are formed which communicate cylinders ( 31 a and 41 a) formed in the plunger blocks with each other fluidally, a separation element is interposed in the communication passages, and in each of the pump and motor side plunger blocks, the separation element divides the communication passages into that of a suction area and that of a discharge area.
Inventors:
Goro Nozaki
Application Number:
JP2005506316A
Publication Date:
September 02, 2009
Filing Date:
April 30, 2004
Export Citation:
Assignee:
Yanmar Co., Ltd.
International Classes:
F16H39/14; F16H47/04
Domestic Patent References:
| JP32007159B1 | ||||
| JP11002307A | ||||
| JP2002168320A | ||||
| JP2003014111A |
Foreign References:
| US2784554 |
Attorney, Agent or Firm:
Juichiro Yano