Hydro-mechanical transmission with automatic braking capability and method of operation
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United States of America Patent
Stats
-
Dec 16, 2003
Grant Date -
N/A
app pub date -
Jul 17, 2002
filing date -
Jul 17, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The transmission includes a planetary gear arrangement having a rotatable output, a first rotatable input connected to an output of a fluid motor, and a second rotatable input connected to a clutch or other device engageable or operable for connecting the second input to a rotatable mechanical power source. The transmission includes a fluid operated brake or other device engageable or operable when fluid therein is pressurized for connecting the second input of the gear arrangement to a fixed member for preventing rotation of the second input. When the transmission is placed or moved into a neutral operating state or condition, the fluid brake or other device is automatically engaged or operated to prevent rotation of the second input, and flow of pressurized fluid through the fluid motor is automatically prevented, such that driving rotation of the output of the transmission is prevented. Then, when the fluid brake or other device is depressurized, the transmission output can be manually rotated.
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