公开(公告)号：US4114465A

公开(公告)日：1978-09-19

申请号：US749195

申请日：1976-12-06

Applicant: M. Frank Troy

Inventor： M. Frank Troy

IPC: F16K1/22 ,  F16K31/05 ,  F16K31/53 ,  F16H27/02

CPC classification number: F16K31/535 ,  F16K1/221 ,  F16K31/055 ,  Y10T74/18808

Abstract: A power operated rotary valve actuator utilizing a differential drive and magnetic clutch to provide continuous valve positioning between full open and full closed positions. The valve drive motor operates through a differential drive and in conjunction with a single electric clutch provides sequential application of rotational torque to a stored energy spring and the valve shaft. The sequential torque application minimizes drive system torque requirements and insures that sufficient energy is available to return the valve to a preselected position at any time during normal operation.

Abstract translation: 利用差动驱动和电磁离合器的动力旋转阀致动器，在全开和全闭位置之间提供持续的阀定位。 阀驱动电动机通过差速驱动运行，并且与单个电动离合器一起提供了将旋转力矩顺序地应用于存储的能量弹簧和阀轴。 顺序扭矩施加使驱动系统扭矩要求最小化，并确保足够的能量可用于在正常操作期间的任何时间将阀返回到预选位置。

公开(公告)号：US4113063A

公开(公告)日：1978-09-12

申请号：US748058

申请日：1976-12-06

Applicant: M. Frank Troy

Inventor： M. Frank Troy

IPC: F03G1/08 ,  F16K31/05 ,  F03G1/00

CPC classification number: F03G1/08 ,  F16K31/055 ,  Y10T74/11

Abstract: A motor driven actuator, providing continuous positioning of an output shaft, and employing energy storage which allows the shaft to return to a predetermined position on failure of the input power source or other predetermined occurrence. Drive motor torque requirements are minimized through sequential application of input torque to the energy storage and actuator load. This arrangement insures that adequate energy storage for return of the output shaft is continuously available during normal actuator operation including alternate output shaft positioning.When utilized to operate a fluid control valve, the valve actuator combination provides a fail-safe valve which under emergency or other prescribed conditions provides return of the valve to a safe condition from any normal operating position throughout the limit of the valve travel.The above functions are provided through the use of a simple highly reliable structure utilizing a reduced number of relatively simple components and a drive motor which can be sized for the output torque alone without additional torque requirements due to the presence of a stored energy device.