Four-wheel drive transfer apparatus for automobile's automatic t

Details Four-wheel drive transfer apparatus for automobile's automatic t Four-wheel drive transfer apparatus for automobile's automatic t

1980-09-02

1984-07-10

Herrmann, Allan D.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74674, 74705, 180247, 180233, F16H 3706

Patent

active

044585578

ABSTRACT:
In the four-wheel drive transfer apparatus for the automotive vehicle's automatic transmission which includes input shaft, a first output shaft coaxially aligned with the input shaft and normally having a power transmission from the input shaft, and a second output shaft in parallel with the first output shaft and having a power transmission from the input shaft when the four-wheel drive is selected, the improvement further includes a wet-type multiple-disc clutch member, a wet-type multiple-disc brake member, and a planetary gear set interposed between the input shaft and the first and second output shafts and containing gearing elements selectively operated by the clutch member and brake member so that the gearing elements engage with or disengage from each other, whereby the clutch member causes the input shaft and the second output shaft to engage with each other so as to switch between the two-wheel drive and four-wheel drive during the vehicle running conditions and enable the transfer apparatus to provide gearshifts.

REFERENCES:
patent: 874580 (1907-12-01), Farkas et al.
patent: 2314833 (1943-03-01), Keese
patent: 2437517 (1948-03-01), Greenlee
patent: 2510469 (1950-06-01), Greenlee
patent: 3296895 (1967-01-01), Karlsson
patent: 4103753 (1978-08-01), Holdeman
patent: 4173269 (1979-11-01), Craig
patent: 4292860 (1981-10-01), Kako et al.

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