192 clutches and power-stop control – Clutches – Operators
Patent
1977-12-08
1980-12-09
Herrmann, Allan D.
192 clutches and power-stop control
Clutches
Operators
192 85A, 192 85F, 192104F, 192105F, 192106F, 192109F, 137 56, 137542, 251282, F16D 43284, F16D 25063, F16K 1704
Patent
active
042380200
ABSTRACT:
A fluid pressure operated clutch which transmits torque from an engine output shaft to a transmission input shaft, including a rotatable flywheel connected to the output shaft, an adapter connected to the flywheel for rotation with the flywheel, the adapter having a first annular plate with a fluid passage near the inner periphery of the plate, and a centrifugal piston which defines with the adapter a fluid chamber supporting a rotatable torus of hydraulic fluid. The piston has a second annular plate, slideable with respect to the first plate, and a second fluid passage near the outer periphery of the second plate. The first and second plates, at their inner peripheries, provide a controlled clearance to vary the rate of hydraulic fluid into the first fluid chamber as the second plate slides. A centrifugal relief valve is connected to the piston and has a conical valve member removably seated on an outlet of the valve to drain fluid from the chamber through the second passage and the outlet when engine overspeed occurs. A clutch pack of friction plates responds to movement of the piston to engage and disengage the clutch.
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Chadwick, III Curtis E.
Johnson Gordon W.
Nerstad Karl A.
Caterpillar Tractor Co.
Herrmann Allan D.
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