Fluid handling – Systems – Sequentially closing and opening alternately seating flow...
Patent
1985-07-15
1986-11-04
Nilson, Robert G.
Fluid handling
Systems
Sequentially closing and opening alternately seating flow...
91426, F16K 1104
Patent
active
046205675
ABSTRACT:
A solenoid-operated fluid control valve having manual override and fluid latching for establishing a fluid path between a supply port and a delivery port when a brake-release solenoid pilot valve coil is momentarily energized to cause a pilot piston to close an exhaust valve and to open a supply valve for causing feedback pressure to be fed from a delivery chamber to a pilot chamber for fluid latching the pilot piston in a brake-release position until a brake-application solenoid pilot valve coil is momentarily energized which causes the pilot chamber to exhaust to atmosphere so that the pilot piston returns and opens the exhaust valve and allows the closure of the supply valve.
REFERENCES:
patent: 2900960 (1959-08-01), Gratzmuller
patent: 2959426 (1960-11-01), Augustin
patent: 2985490 (1961-05-01), Gates
patent: 3107693 (1963-10-01), Puster
patent: 3181917 (1965-05-01), Dobrikin
patent: 3411539 (1968-11-01), Machado
patent: 3559688 (1971-02-01), Fischer
patent: 4344603 (1982-08-01), Hozumi
American Standard Inc.
Nilson Robert G.
Sotak J. B.
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