Motor-to-spool coupling for rotary-to-linear direct drive valve

Details Motor-to-spool coupling for rotary-to-linear direct drive valve Motor-to-spool coupling for rotary-to-linear direct drive valve

1992-11-23

1993-11-23

Michalsky, Gerald A.

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

13762565, 384215, F15B 13044, F16K 3104

Patent

active

052636801

ABSTRACT:
A coupling between a direct drive valve motor and a spool for converting rotary-to-linear motion. A bushing is coupled to the spool and defines an opening therein. An end of a shaft carried by the rotor of the motor is received within an opening in the busing. The bushing is outwardly expandable upon the receipt of the end of the shaft to couple the shaft to the spool with minimal frictional forces and near zero backlash.

REFERENCES:
patent: 4546338 (1985-10-01), Idogaki et al.
patent: 4641812 (1987-02-01), Vanderiaan et al.
patent: 4742322 (1988-05-01), Johnson et al.
patent: 4789132 (1988-12-01), Fujita et al.

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