Apparatus for supplying fluid to a plurality of mechanisms

Details Apparatus for supplying fluid to a plurality of mechanisms Apparatus for supplying fluid to a plurality of mechanisms

1978-12-07

1981-11-24

Hershkovitz, Abraham

Motors: expansible chamber type

With interrelated control of motive fluid and lubricant

91516, 91517, 91536, F01B 3110

Patent

active

043017134

ABSTRACT:
The invention relates to apparatus for supplying pressurized fluid to various controlled members (16,30,34). A problem with prior apparatus is the need for a plurality of separate apparatuses to supply the controlled members. The invention solves this problem through the use of a single valve (25) that controls the supply of pressurized fluid from a fluid source to first (34), second (16) and third (30) controlled members, in which the single valve (25) has a first relief valve segment (46) to relieve the pressure of fluid flowing from the source to the first controlled member (34), a second relief valve segment (100) to relieve the pressure of fluid relieved by the first relief valve segment (46), and a third valve segment (138) to direct the fluid relieved by the first relief valve segment (46) to the second (16) and third (30) controlled members. A movable lever (26) is connected to the third valve segment (138) to shift this valve segment (138) and control the direction of the fluid. The invention is used principally in hydraulic circuits for earthworking vehicles to actuate a plurality of controlled members including a flywheel clutch and clutch brake, and steering clutches and vehicle brakes.

REFERENCES:
patent: 2941639 (1960-06-01), Christenson
patent: 3895703 (1975-07-01), Schmitt
patent: 3922855 (1975-12-01), Bridwell
patent: 3998111 (1976-12-01), Blake
patent: 4004779 (1977-01-01), Flesburg
patent: 4140196 (1979-02-01), Brewer

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