192 clutches and power-stop control – Clutches – Operators
Patent
1976-05-17
1977-09-20
Wyche, Benjamin W.
192 clutches and power-stop control
Clutches
Operators
192105BA, 192 41R, 192107T, F16D 4314
Patent
active
040491030
ABSTRACT:
A clutch comprising a pair of spring loaded shoes and a drum, somewhat like brake shoes and a drum, applies and removes loads upon an automatic transmission. As the motor speed picks up, the shoes are flung outwardly under centrifugal force. When the speed is great enough, the shoes grip the drum and turn it. The drum drives the automatic transmission. Under runaway conditions, the drum is rotated by the load acting through the transmission. When the load drives the drum even faster than the motor rotates the shoes, slippage occurs in the clutch and the motor is relieved. This way the transmission may be shifted up or down at any speed. The clutch utilizes one or more shoes with a relative high coefficient of friction on one side and a lower coefficient of friction on the other side. A driving notch within the clutch directs the higher coefficient lining on the shoe to drive the drum and directs the other lower coefficient lining when the drum is rotating faster than the motor, such as in a runaway condition. Through such a structure, slippage is made possible.
REFERENCES:
patent: 2127719 (1938-08-01), Dodge
patent: 2947399 (1960-08-01), Moore et al.
patent: 3024886 (1962-03-01), Peras
patent: 3115792 (1963-12-01), Grattan
patent: 3283867 (1966-11-01), Rice
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