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Title: Transmission with a first-stage hydrostatic mode and two hydromechanical stages

Abstract

A power transmission having two planetary assemblies, each having at least one carrier with planet gears, at least one sun gear, and at least one ring gear. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the sun gear or gears of the first planetary assembly. The speed-varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being connected in driving relation to the input shaft, the other unit, which may have a fixed stroke, being connected in driving relation to the sun gear. The input shaft is also connectable by a first clutch to a carrier of the first planetary assembly and by a second clutch to a sun gear of the second planetary assembly. A brake grounds the first carrier in the first range and in reverse and causes drive to be delivered to the output through a ring gear of the first planetary assembly in a hydrostatic mode. The carrier of the second planetary assembly being connected in driving relationship to thatmore » ring gear, and in all ranges these two elements transmit the drive to the output shaft.« less

Inventors:
 [1];  [2]
  1. (LATE OF San Francisco, CA)
  2. San Diego, CA
Issue Date:
Research Org.:
Orshansky Transmission Corp., San Diego, CA (USA)
OSTI Identifier:
863425
Patent Number(s):
4168637
Assignee:
Orshansky Transmission Corporation (New York, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16H - GEARING
DOE Contract Number:  
EY-76-C-03-1165
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
transmission; first-stage; hydrostatic; mode; hydromechanical; stages; power; planetary; assemblies; carrier; planet; gears; sun; gear; speed-varying; module; connected; driving; relation; input; shaft; relationship; assembly; means; comprise; pair; hydraulic; units; hydraulically; interconnected; serves; pump; motor; vice; versa; variable; stroke; unit; fixed; connectable; clutch; brake; grounds; range; reverse; causes; drive; delivered; output; ranges; elements; transmit; speed-varying module; speed-varying means; units hydraulically; brake grounds; causes drive; hydrostatic mode; hydraulic units; fixed stroke; hydraulically interconnected; sun gear; power transmission; driving relation; output shaft; input shaft; planetary assembly; planetary assemblies; driving relationship; variable stroke; vice versa; planet gears; hydromechanical stages; hydraulic unit; first-stage hydrostatic; /475/

Citation Formats

Orshansky, Jr., deceased, Elias, and Weseloh, William E. Transmission with a first-stage hydrostatic mode and two hydromechanical stages. United States: N. p., 1979. Web.
Orshansky, Jr., deceased, Elias, & Weseloh, William E. Transmission with a first-stage hydrostatic mode and two hydromechanical stages. United States.
Orshansky, Jr., deceased, Elias, and Weseloh, William E. Mon . "Transmission with a first-stage hydrostatic mode and two hydromechanical stages". United States. https://www.osti.gov/servlets/purl/863425.
@article{osti_863425,
title = {Transmission with a first-stage hydrostatic mode and two hydromechanical stages},
author = {Orshansky, Jr., deceased, Elias and Weseloh, William E},
abstractNote = {A power transmission having two planetary assemblies, each having at least one carrier with planet gears, at least one sun gear, and at least one ring gear. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the sun gear or gears of the first planetary assembly. The speed-varying means may comprise a pair of hydraulic units hydraulically interconnected so that one serves as a pump while the other serves as a motor and vice versa, one of the units having a variable stroke and being connected in driving relation to the input shaft, the other unit, which may have a fixed stroke, being connected in driving relation to the sun gear. The input shaft is also connectable by a first clutch to a carrier of the first planetary assembly and by a second clutch to a sun gear of the second planetary assembly. A brake grounds the first carrier in the first range and in reverse and causes drive to be delivered to the output through a ring gear of the first planetary assembly in a hydrostatic mode. The carrier of the second planetary assembly being connected in driving relationship to that ring gear, and in all ranges these two elements transmit the drive to the output shaft.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

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