Valves and valve actuation – Fluid actuated or retarded – Dashpot or fluid controlled retarder or timer
Patent
1996-09-30
1998-08-11
Bennett, Henry A.
Valves and valve actuation
Fluid actuated or retarded
Dashpot or fluid controlled retarder or timer
25112907, 3031192, F16K 3112
Patent
active
057916284
ABSTRACT:
An electromagnetically actuatable valve that reduces the locking force of the valve has a seat valve, which can be transferred to a closing position counter to the force of a prestressed restoring spring. A valve seat communicates with an inflow side, and a closing member disposed on a tappet communicates on the outflow side of the valve. A magnet armature cooperates with the tappet in a valve dome which communicates with the outflow side. The magnet armature and the tappet are two separate components which positively support one another. On the inflow side, a longitudinal bore of the tappet originates at the closing member, and a first longitudinally movable pin is receive therein largely in a pressure-tight fashion. The cross section of the first pin is at least approximately equivalent to the sealing cross section of the valve seat. The longitudinal bore of the tappet is continued in the magnet armature. A second pin is received in that longitudinal bore. While the tappet and the magnet armature are pressure-equalized, in the closing position of the valve the inflow-side differential pressure is diverted, via the first and second pins nonpositively supported on one another, to an end wall of the valve dome. The valve can be used in hydraulic brake systems for motor vehicles.
REFERENCES:
patent: 3441246 (1969-04-01), Lauppe et al.
patent: 5037269 (1991-08-01), Halberg
patent: 5076538 (1991-12-01), Mohr et al.
patent: 5109886 (1992-05-01), Takata et al.
patent: 5167442 (1992-12-01), Alaze et al.
patent: 5375506 (1994-12-01), Hashida et al.
Brehm Werner
Wolff Guenter
Zechmann Juergen
Ball John
Bennett Henry A.
Greigg Edwin E.
Greigg Ronald E.
Robert & Bosch GmbH
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