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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 connected directly to a sun gear of the second planetary assembly and is further connectable by a clutch to a carrier of the first planetary assembly. Another clutch enables connecting the carrier of the first planetary assembly to a ring 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 planetarymore » assembly in a hydrostatic mode. The carrier of the second planetary assembly is connected in rigid driving relationship to that first ring gear, and in all ranges these two elements transmit the drive to the output shaft.« less

Inventors:
 [1];  [2]
  1. (late of San Fransisco, CA)
  2. (San Diego, CA)
Issue Date:
Research Org.:
Orshansky Transmission Corp., San Diego, CA (USA)
OSTI Identifier:
863854
Patent Number(s):
4261226
Assignee:
Orshansky Transmission Corporation (New York, NY) OSTI
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; directly; connectable; clutch; enables; connecting; brake; grounds; range; reverse; causes; drive; delivered; output; rigid; ranges; elements; transmit; speed-varying module; speed-varying means; units hydraulically; brake grounds; causes drive; hydrostatic mode; hydraulic units; connected directly; 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., 1981. 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. Thu . "Transmission with a first-stage hydrostatic mode and two hydromechanical stages". United States. https://www.osti.gov/servlets/purl/863854.
@article{osti_863854,
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 connected directly to a sun gear of the second planetary assembly and is further connectable by a clutch to a carrier of the first planetary assembly. Another clutch enables connecting the carrier of the first planetary assembly to a ring 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 is connected in rigid driving relationship to that first ring gear, and in all ranges these two elements transmit the drive to the output shaft.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

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