Power plants – Pressure fluid source and motor – Coaxial impeller and turbine unit
Patent
1974-05-06
1977-01-25
Wyche, Benjamin W.
Power plants
Pressure fluid source and motor
Coaxial impeller and turbine unit
192 357, 192 331, 192 333, 74733, F16D 2300
Patent
active
040044173
ABSTRACT:
A drive train for vehicles such as earthmoving machines having a prime mover coupled in driving relation with ground wheels for the machine through a power input member and a power output member. One or more implements are coupled to the power input member. In order to selectively match or mismatch power delivered by the prime mover with varying power requirements for the implements and wheels, a hydraulically operated slipping clutch is arranged between the power input and output members for adjusting power delivery from the prime mover to the output member and wheels with a manual control for regulating hydraulic operation of the slipping clutch. In other embodiments, the power input and output members are portions of a torque converter, a centrifugal valve also being provided to operate the slipping clutch in response to rotational speed of an element in the drive train and under regulation of the manual control. Another embodiment includes the slipping clutch disposed in a fluid housing subject to variable pressure with the centrifugal valve being responsive to the variable fluid pressure. In another embodiment, controls for a transmission in the drive train are also operative to provide regulation of the slipping clutch.
REFERENCES:
patent: 3202018 (1965-08-01), Hilpert
patent: 3224537 (1965-12-01), Hilpert
patent: 3384209 (1968-05-01), Murphy
patent: 3478621 (1969-11-01), Johnson et al.
patent: 3542175 (1970-11-01), Olson
patent: 3621955 (1971-11-01), Black et al.
Audiffred Sidney J.
Steury Howard C.
Woody Albert L.
Caterpillar Tractor Co.
Wyche Benjamin W.
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