Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Patent
1985-12-23
1987-03-03
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
251 65, 335229, F16K 3108
Patent
active
046470107
ABSTRACT:
A combined torque motor and rotary flow control valve unit (10) incorporating a torque motor (12) and a rotary flow control valve (14). The unit (10) includes an enclosure member (70) surrounding a rotor (38) of the torque motor (12) and fluid-tightly isolating the stationary part (18) of the torque motor from a sealed chamber (96) defined within the enclosure member (70) to prevent fluid leakage. Preferably, the chamber (96) in the enclosure member (70) is communicated with a fluid inlet (56) of the valve (14) to counterbalance fluid pressures acting on a rotary flow control member (54) of the valve, thereby eliminating any axial thrust that would otherwise be exerted on the rotary flow control member due to the fluid pressure acting thereon in one direction.
REFERENCES:
patent: 2718614 (1955-09-01), Gamble
patent: 2833508 (1958-05-01), Bydalek et al.
patent: 3175585 (1965-03-01), Faisandier
patent: 3347262 (1967-10-01), Gibson
Murata Shuuji
Sogabe Ichita
Yokoya Yuji
Nippondenso Co. Ltd.
Rosenthal Arnold
Toyota Jidosha & Kabushiki Kaisha
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