Motor vehicles – Having four wheels driven
Patent
1979-02-05
1981-09-01
Jaudon, Henry
Motor vehicles
Having four wheels driven
180248, 192 85AA, B60K 2308, F16D 2500
Patent
active
042866863
ABSTRACT:
A multi-plate friction clutch for a motor vehicle to automatically engage normally driven wheels with wheels which are not normally driven includes a fluid pressure piston/cylinder for engaging the plates connected to a pressure line and a discharge line through two rotary valves. One valve is formed by an inner plate carrier rotatable on a drive shaft through an angle .alpha. and the other valve is formed by a sleeve around the shaft and rotatable with respect to a fixed housing through an angle .beta.. The cylinder is selectively pressurized or de-pressurized through bores, ducts, ports and line systems in dependence or the relative rotary movements of the valves.
An over-ride valve is provided.
REFERENCES:
patent: 3403763 (1968-10-01), Hilpert et al.
patent: 3420344 (1969-01-01), Hilpertet al.
patent: 3482669 (1969-12-01), Foster-Pegg
patent: 3923133 (1975-12-01), Chivari
Jaudon Henry
Wray James C.
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