Transfer device for a four-wheel drive motor vehicle

Details Transfer device for a four-wheel drive motor vehicle Transfer device for a four-wheel drive motor vehicle

1989-01-26

1990-02-27

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Operators

192 85AA, 180235, F16D 4328

Patent

active

049038117

ABSTRACT:
A transfer device is provided for distributing the output of a transmission to front wheels and rear-wheels through a front power train and a rear power train. The output shaft of the transmission is operatively connected to the rear power train. The transfer device has a drive gear rotatably mounted on the output shaft of the transmission and engaged with a driven gear in the front power train, a fluid operated multiple-disk friction clutch having a drive drum and a driven drum. The driven drum is secured to the drive gear and the drive drum is secured to the output shaft. A piston is slidably mounted in a piston chamber and operated by oil supplied to the piston chamber for engaging the drive drum with the driven drum. A centifugal force oil chamber is formed in the fluid operated clutch opposite to the piston chamber, interposing the piston. The oil chamber is supplied with oil through an oil supply passage. A connecting passage is provided for connecting the centrifugal force oil chamber with the oil supply passage, and a check valve is provided in the connecting passage so as to maintain oil in the centrifugal force oil chamber. Thus, centrifugal force of the oil in the oil chamber acts on the piston to release the clutch.

REFERENCES:
patent: 2642844 (1953-06-01), Funn
patent: 4147245 (1979-04-01), Folomin et al.
patent: 4421218 (1983-12-01), Haight

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