Hydraulic stepless transmission and power transmission

Details Hydraulic stepless transmission and power transmission Hydraulic stepless transmission and power transmission

2006-10-10

2006-10-10

Kershteyn, Igor (Department: 3745)

Power plants

Pressure fluid source and motor

Input pump and rotary output motor system having...

C060S489000

Reexamination Certificate

active

07117671

ABSTRACT:
A hydraulic stepless transmission comprises a first hydraulic system. Formed in a cylinder block are first and second plunger holes that contain first and second plungers, respectively, a hydraulic closed circuit that connects the first and second plunger holes, and distributing valve holes that contain distributing valves, which switch flow direction of hydraulic fluid in the circuit. A shaft and cylinder block synchronously rotate, with the first and second plunger holes formed in parallel to the shaft, respectively, and the swash plate of the second hydraulic system is rotatably supported around the shaft. The first and second plungers are urged toward the swash plates by springs provided in the corresponding first and second plunger holes, respectively. The swash plate of the first hydraulic system is supported by an outer ring of a first combined thrust and radial bearing that supports the shaft, and the swash plate of the second hydraulic system is supported by an outer ring of a second combined thrust and radial bearing that supports the shaft. The movement of inner rings of the first and second combined thrust and radial bearings in an axial direction to the shaft is regulated.

REFERENCES:
patent: 3314234 (1967-04-01), Orshansky, Jr.
patent: 4854125 (1989-08-01), Inoue
patent: 6324843 (2001-12-01), Yasuda et al.
patent: 6698199 (2004-03-01), Hayashi et al.
patent: 62-72955 (1987-04-01), None
patent: 2002-31209 (2002-01-01), None
patent: WO 96/31715 (1996-10-01), None

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