Valve

Details Valve Valve

1990-04-23

1991-12-31

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

251122, 137219, F16K 3104, F16K 102, F16K 148

Patent

active

RE0337820

ABSTRACT:
A valve including rotor means of which position is rotatably fixed within tubular flowpassage means; rotating magnetic field generating means fixedly positioned around said rotor means; first screw means which are rotated coaxially with the rotor means together with the latter; second screw means which engage the first screw means and are movable in an axial direction of the screw without being rotated for itself by the rotation of the first screw means; valve body means connected to the second screw means; and valve seat means in engagement with the valve body means, whereby the rotor means are rotated by the action of the rotating magnetic field generated by the rotating magnetic field generating means, said rotation causes the second screw means to be moved in an axial direction of the screw, and said movement is transmitted to the valve body to adjust a degree of opening and closing of the valve.

REFERENCES:
patent: 4452423 (1984-06-01), Beblavi et al.
patent: 4463930 (1984-08-01), Vamvakas
patent: 4685434 (1987-08-01), Ando et al.

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