Limiting/switching device for four wheel drive vehicle

Details Limiting/switching device for four wheel drive vehicle Limiting/switching device for four wheel drive vehicle

1986-12-31

1989-09-05

Wright, Dirk

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

192 85AA, 180249, 747105, F16H 3708

Patent

active

048627682

ABSTRACT:
Provided is a power transmission device for four-wheel drive vehicles of both the full-time type and part-time types, wherein a wet multiple-disc clutch is mounted in a ring gear covering the front-wheel differential gear and arranged coaxially with the differential gear. The wet multiple-disc type clutch is engaged by means of a hydraulic actuator in which a plurality of pistons are arranged in series. Hydraulic pressure is fed into oil chambers formed by the pistons through individual or common oil passages. The wet multiple-clutch constitutes a differential motion limiting device for stopping or limiting the differential motion of a center differential gear for the full-time four wheel drive, or constitutes a rear wheel drive switching unit for engaging and disengaging the power transmission between the ring gear mount casing and the transfer unit.

REFERENCES:
patent: 3650364 (1972-03-01), Laing
patent: 3690429 (1972-09-01), Honda
patent: 3877321 (1975-04-01), Storer, Jr.
patent: 4476952 (1984-10-01), Suzuki
patent: 4582160 (1986-04-01), Weismann et al.
patent: 4601359 (1986-07-01), Weismann et al.
patent: 4643045 (1987-02-01), Katayama
patent: 4645029 (1987-02-01), Sasaki et al.
patent: 4669332 (1987-06-01), Katayama
patent: 4671135 (1987-06-01), Dangel

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