Title:
中立設定液圧回路を有する連続可変液圧トランスミッション
Document Type and Number:
Japanese Patent JP3886534
Kind Code:
B2
Abstract:
A continuously variable hydrostatic transmission includes axially aligned input and output shafts journaled by a transmission housing and respectively coupled to a prime mover and a load. The input shaft drives a hydraulic pump unit, while a hydraulic motor unit is grounded to the transmission housing. A wedge-shaped swashplate is pivotally connected to the output shaft in operative position to accommodate pressurized hydraulic fluid exchanges between the pump and motor units. A controller is coupled to adjust the angular orientation of the swashplate relative to the output shaft axis and thus set the transmission ratio. A hydraulic circuit, connected into the hydraulic motor unit, is selectively operable to vent high and low fluid pressure sides of the swashplate to atmosphere, thus imposing a neutral transmission ratio condition regardless of the transmission ratio set by the controller.
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| JP2004011769 | HYDROSTATIC CONTINUOUSLY VARIABLE TRANSMISSION |
Inventors:
Larkin, Robert Francis
Parcel, Donald Mark
Parcel, Donald Mark
Application Number:
JP51579297A
Publication Date:
February 28, 2007
Filing Date:
July 31, 1996
Export Citation:
Assignee:
General Dynamics Defense Systems, Inc.
International Classes:
F16H39/10
Domestic Patent References:
| JP4203553A | ||||
| JP6505327A |
Foreign References:
| US5423183 |
Attorney, Agent or Firm:
Yuzo Yamazaki
Kiko Okada
Kiko Okada