Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1988-01-27
1989-09-05
Braun, Leslie A.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74711, 180248, 180249, B60K 1735, B60K 1702
Patent
active
048627690
ABSTRACT:
In a driving apparatus for a four-wheel drive vehicle in accordance with the present invention, a multiple disc clutch is incorporated between a front wheel driving system and a rear wheel driving system, a hydraulic chamber is formed in a fixed casing supporting rotatably a front differential case in the front wheel driving system and a clutch piston is disposed in the hydraulic chamber. Bearings are disposed between the clutch piston and the front differential case in order to enable them to rotate relatively. Hydraulic pressure generated from hydraulic pressure generation means disposed outside each driving system is caused to act on the clutch piston so that the multiple disc clutch is operated by the press force of the clutch piston through the front differential case and the differential operation of the front and rear wheel is restricted in accordance with the operation force of the multiple disc clutch. Accordingly, the size in the radial direction can be reduced in the axial direction of the apparatus itself, and even if there is any limitation to the space, a large hydraulic pressure is permitted to act on the muliple disc clutch by forming only the small hydraulic chamber described above.
REFERENCES:
patent: 799064 (1905-09-01), Kowsky
patent: 3546969 (1970-12-01), Gibson et al.
patent: 3845671 (1974-11-01), Sharp et al.
patent: 4186829 (1980-02-01), Schneider et al.
patent: 4601359 (1986-07-01), Weismann et al.
patent: 4763749 (1988-08-01), Miura et al.
Koga Hidetaka
Kurosawa Ikuo
Kurotaki Naoyuki
Naoe Fumihiro
Takahashi Kouji
Braun Leslie A.
Gehris William
Isuzu Motors Limited
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