Valves and valve actuation – Electrically actuated valve – Including solenoid
Patent
1994-01-19
1994-12-27
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Including solenoid
251 65, 25112921, 137550, F16K 3108
Patent
active
053758110
ABSTRACT:
A magnetic-latching of either of the selected operating positions of a two-position valve utilizes a generally toroidal magnetic circuit that is established by spaced inner and outer annular walls which are connected at their axial ends, with an inlet-port fluid-flow connection at one end to the interior of the inner wall, and with an outlet-port fluid-flow connection from the interior of the inner wall. The inner wall has a gap between axially spaced first and second annular pole faces. A single electrical excitation coil is coupled to the magnet circuit at overlap with the inner annular wall on one side of the gap. A disc-shaped armature is compliantly supported for axially shuttled displacement in the gap in alternating abutment with one to the exclusion of the other of the pole faces. Fixedly mounted radially polarized means within the outer annular wall completes a magnet circuit to the outer wall via the periphery of the armature and one or the other of the pole faces, depending upon the shuttled position of the armature. And valve means for on/off control of port-to-port flow is provided by an annular valve seat radially within one of the pole faces, in coaction with a valve member carried by the armature.
REFERENCES:
patent: 3383084 (1968-05-01), Mayfield
patent: 3814376 (1974-06-01), Reinicke
patent: 3977436 (1976-08-01), Larner
patent: 5174336 (1992-12-01), Casey et al.
Marotta Scientific Controls, Inc.
Rosenthal Arnold
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