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Title: Hydromechanical transmission

Abstract

A power transmission having three planetary assemblies, each having its own carrier and its own planet, sun, and ring gears. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the three sun gears, all of which are connected together. 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 gears. The input shaft also drives the carrier of the third 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 the first ring gear in a hydrostatic mode. The carrier of the third planetary assembly drives the ring gear of the second planetary assembly, and a first clutching means connects the second carrier with the output in a second range, the brake for grounding the first carrier then being released. A second clutchingmore » means enables the third ring gear to drive the output shaft in a third range.« 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:
863188
Patent Number(s):
4116089
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:
hydromechanical; transmission; power; planetary; assemblies; carrier; planet; sun; gears; speed-varying; module; connected; driving; relation; input; shaft; relationship; means; comprise; pair; hydraulic; units; hydraulically; interconnected; serves; pump; motor; vice; versa; variable; stroke; unit; fixed; drives; third; assembly; brake; grounds; range; reverse; causes; drive; delivered; output; gear; hydrostatic; mode; clutching; connects; grounding; released; enables; 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; sun gears; variable stroke; vice versa; hydromechanical transmission; hydraulic unit; /475/

Citation Formats

Orshansky, Jr. deceased, Elias, and Weseloh, William E. Hydromechanical transmission. United States: N. p., 1978. Web.
Orshansky, Jr. deceased, Elias, & Weseloh, William E. Hydromechanical transmission. United States.
Orshansky, Jr. deceased, Elias, and Weseloh, William E. Sun . "Hydromechanical transmission". United States. https://www.osti.gov/servlets/purl/863188.
@article{osti_863188,
title = {Hydromechanical transmission},
author = {Orshansky, Jr. deceased, Elias and Weseloh, William E},
abstractNote = {A power transmission having three planetary assemblies, each having its own carrier and its own planet, sun, and ring gears. A speed-varying module is connected in driving relation to the input shaft and in driving relationship to the three sun gears, all of which are connected together. 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 gears. The input shaft also drives the carrier of the third 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 the first ring gear in a hydrostatic mode. The carrier of the third planetary assembly drives the ring gear of the second planetary assembly, and a first clutching means connects the second carrier with the output in a second range, the brake for grounding the first carrier then being released. A second clutching means enables the third ring gear to drive the output shaft in a third range.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

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