Electrically controllable valve

Details Electrically controllable valve Electrically controllable valve

1981-10-15

1985-01-22

Schwadron, Martin P.

Valves and valve actuation

With non-fluid retarder

251 70, 251129, 251172, F16K 3102

Patent

active

044947275

ABSTRACT:
To provide for extremely short valve operating time periods, in the order of up to 10.sup.-5 seconds, for example, a valve element (3, 33, 53, 63, 73, 93) is slidable within a bore (2, 52), movable by a spring (10, 60) or by applied hydraulic pressure (P), and restrained from movement by an electrical positioning element (14, 44, 45, 94) which has a positioning movement transverse to the movement of the valve element, and which clamps the valve element in the bore, or an extending flap or strip (34) against a counter element, which may be another positioning element (45). Preferably, and for fast operation, the positioning element (14) is a stack or column (15) of piezoelectric disks (16) which, when energized, push a stem or bolt element (13) in clamping direction towards the valve stem; alternatively, (FIG. 6), the positioning element (94) can be a solenoid coil pushing the armature (93) thereof into clamping direction towards the valve stem.

REFERENCES:
patent: 775054 (1904-11-01), Waterman
patent: 959609 (1910-05-01), Roehrich
patent: 3056575 (1962-10-01), Mooney
patent: 4284263 (1981-08-01), Newcomb
patent: 4383641 (1983-05-01), Shreve

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