Direct drive servovalve having positive radial limit stop

Fluid handling – Systems – Multi-way valve unit

Patent

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Details

25112912, 251284, 310 36, F15B 13044

Patent

active

050405683

ABSTRACT:
Disclosed is a direct drive servovalve which includes a drive motor mounted upon a housing for a reciprocally disposed spool valve wherein the rotor of the drive motor engages the spool valve. The rotational motion of the rotor is converted into linear motion in the spool-valve. The rotor of the drive motor carries a cam shaped flat washer which has surfaces engaging stop means defined by the valve housing.

REFERENCES:
patent: 4507634 (1985-03-01), Vanderlaan
patent: 4641812 (1987-02-01), Vanderlaan et al.
patent: 4793377 (1988-12-01), Haynes et al.

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