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 »
- Inventors:
-
- (LATE OF San Francisco, CA)
- 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}
}