Title:
CONTINUOUSLY VARIABLE HYDROSTATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO1996014523
Kind Code:
A3
Abstract:
A continuously variable hydrostatic transmission includes an input shaft connected to drive a hydraulic pump unit, a grounded hydraulic motor unit, and an output shaft. A wedge-shaped swashplate is pivotally mounted to the output shaft in driving connection to receive output torque resulting from the exchange of pressurized hydraulic fluid between the pump and motor units through specially configured ports in the swashplate. A hydraulically actuated ratio controller is pivotally linked to the swashplate to selectively adjust the swashplate angle relative to the output shaft axis and thereby change transmission ratio.
Inventors:
FOLSOM LAWRENCE RAY
Application Number:
PCT/US1995/013843
Publication Date:
August 01, 1996
Filing Date:
October 10, 1995
Export Citation:
Assignee:
MARTIN MARIETTA CORP (US)
International Classes:
F16H39/10; F16H61/4096; (IPC1-7): F16H39/10
Domestic Patent References:
| WO1992012357A1 | 1992-07-23 |
Foreign References:
| FR879767A | 1943-03-04 | |||
| US4493189A | 1985-01-15 |
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