Motors: expansible chamber type – Working member position feedback to motive fluid control – Plural input signal means for single motor valve
Patent
1995-02-03
1996-02-27
Lopez, F. Daniel
Motors: expansible chamber type
Working member position feedback to motive fluid control
Plural input signal means for single motor valve
91376R, F15B 1316
Patent
active
054939461
ABSTRACT:
In a booster housing (10) two chambers (12, 14) separated from each other by a movable wall (16) are connectable to each other by a control valve (20) having a valve body (22) axially movable in common with the wall (16), said valve body having a first valve seat (24), a sealing element (60) axially movable in said valve body and pretensioned in the direction of said first valve seat and a valve barrel (30). The valve barrel (30) has a second valve seat (32) and is pretensioned in the direction of the sealing element (60), is couplingly connected for movement by means of a piston (42) movable by an actuator element (44) in the direction away from the sealing element (60) and is movable by means of a solenoid (40) also independently of the piston (42). Between said valve barrel (30) and said piston (42) an axially effective seal (56) is disposed so that it will only seal when an abutment (55) formed on said valve barrel (30) is in contact at least more or less with a coupling element (54) formed on said piston (42).
REFERENCES:
patent: 5172964 (1992-12-01), Levrai et al.
Lopez F. Daniel
Lucas Industries Public Limited Company
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