Automatic transmission for vehicles

Details Automatic transmission for vehicles Automatic transmission for vehicles

1982-10-05

1985-05-28

Herrmann, Allan D.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74483PB, 74862, 74866, 74867, 74871, 180272, 180285, F16H 374, G05G 1100, B60K 4108

Patent

active

045192731

ABSTRACT:
An automatic vehicle transmission is operated simply by driver selection of a forward or backward switch, utilizing an electric and hydraulic control system to effect speed changes among the various forward speeds, neutral and park. Also, during a shift, a solenoid valve is used to temporarily lower the pressure to prevent undue shift shock.

REFERENCES:
patent: 2514963 (1950-07-01), McRae
patent: 3000230 (1951-09-01), Froslie
patent: 3125893 (1964-03-01), Bensinger
patent: 3141350 (1964-07-01), Bevacqua et al.
patent: 3938409 (1976-02-01), Uozumi
patent: 4166513 (1979-09-01), Johnson
patent: 4392543 (1983-07-01), Buckhouse et al.

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