Hydraulic control apparatus

Details Hydraulic control apparatus Hydraulic control apparatus

1995-12-22

1997-09-23

Lopez, F. Daniel

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

One path includes restriction

91 33, 91431, 60453, F15B 1304

Patent

active

056692803

ABSTRACT:
A hydraulic control apparatus for a hydraulically operated vehicular transmission has control valves corresponding to hydraulic engaging elements provided in the transmission. The supply and discharge of hydraulic oil to and from the corresponding hydraulic engaging elements are controlled by the control valves. The hydraulic control apparatus has an oil supply passage which is connected to a hydraulic oil source and into which a throttle is interposed. The oil supply passage is connected to oil passages which are on a downstream side of each of the control valves and which are to be communicated with the hydraulic engaging elements. Check valves are interposed in the oil supply passage to allow for the hydraulic oil flow only from the oil supply passage to the oil passages on the downstream side of each of the control valves.

REFERENCES:
patent: 1873396 (1932-08-01), Hallenbeck
patent: 3576241 (1971-04-01), Maurice et al.
patent: 4354351 (1982-10-01), Dezelan
patent: 4887512 (1989-12-01), Leising et al.

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