Automatic transmission for four wheel drive automotive vehicles

Details Automatic transmission for four wheel drive automotive vehicles Automatic transmission for four wheel drive automotive vehicles

1980-07-24

1984-11-06

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74866, 74867, 74868, 74665GA, 74705, 74733, B60K 4118, B60K 4116, F16H 3706

Patent

active

044805055

ABSTRACT:
An automatic transmission for a four wheel drive automotive vehicle comprising a torque converter, an automatic transmission connected to a turbine shaft of the torque converter for transmitting the output of the engine to the front-wheel, a fluid operated clutch for transmitting the output to the rear-wheel, and a pressure oil control for operating the automatic transmission. The pressure oil control includes a pressure regulator valve to produce a line pressure according to the operational condition of the engine and a valve for the clutch. The valve means is adapted to operate the clutch by manual operation, such that the automatic transmission is changed to the four wheel drive.

REFERENCES:
patent: 2714936 (1955-08-01), Gregory
patent: 2749772 (1956-06-01), O'Malley
patent: 3433319 (1969-03-01), McLean
patent: 3627072 (1971-12-01), Smirl
patent: 3868869 (1975-03-01), Hunt et al.
patent: 3895542 (1975-07-01), Miyauchi
patent: 3963085 (1976-06-01), Vinton
patent: 3988951 (1976-11-01), Mair et al.
patent: 4138906 (1979-02-01), Nakao et al.
patent: 4236595 (1980-12-01), Beck et al.
patent: 4275608 (1981-06-01), Brancolini

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