A rotary position indicator is configured to integrate with an actuator, wherein the rotary position indicator includes a first shaft and a second shaft in a nested arrangement, wherein the first and second shafts are configured to transfer linear motion of an actuation component of the actuator int
A rotary position indicator is configured to integrate with an actuator, wherein the rotary position indicator includes a first shaft and a second shaft in a nested arrangement, wherein the first and second shafts are configured to transfer linear motion of an actuation component of the actuator into a first rotational motion and a gear box configured to couple to the actuator, wherein the gear box is configured to transfer the first rotational motion to a second rotational motion of a position shaft.
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1. A system, comprising: a rotary position indicator configured to couple to a piston of an actuator, wherein the rotary position indicator comprises: a first shaft and a second shaft in a nested arrangement, wherein the first shaft is configured to couple to the piston and the first and second shaf
1. A system, comprising: a rotary position indicator configured to couple to a piston of an actuator, wherein the rotary position indicator comprises: a first shaft and a second shaft in a nested arrangement, wherein the first shaft is configured to couple to the piston and the first and second shafts are configured to transfer linear motion of the piston of the actuator into a first rotational motion; anda gear box configured to couple to the actuator, wherein the gear box is configured to transfer the first rotational motion to a second rotational motion of a position shaft. 2. The system of claim 1, wherein the second shaft is coupled to a frame of the actuator. 3. The system of claim 2, wherein the first shaft comprises a pin, the second shaft comprises a spiral slot, and the pin is disposed in the spiral slot. 4. The system of claim 1, wherein the gear box comprises a first meter gear coupled to the second shaft and a second meter gear coupled to the position shaft, wherein the first and second meter gears are geared with one another and are disposed crosswise relative to one another. 5. The system of claim 4, wherein the gear box comprises a spring shaft position indicator coupled to the position shaft, and a visual position indicator coupled to the spring shaft position indicator, wherein the visual position indicator is disposed external to the gear box and is configured to represent an amount of the second rotational motion. 6. The system of claim 5, wherein the gear box comprises a dial disposed on an outer surface of the gear box, the dial comprises at least one graphical indicator, the visual position indicator comprises a pointer configured to point to the at least one graphical indicator based on the second rotational motion. 7. The system of claim 5, comprising a spring disposed about the spring shaft position indicator within the gear box, wherein the spring is preloaded in torsion. 8. The system of claim 1, comprising at least one seal disposed between the gear box and the actuator. 9. The system of claim 1, comprising a position indicator accessory coupled to the gear box, wherein the position indicator accessory is configured to measure an angular position of the position shaft, wherein the position indicator accessory comprises a limit switch, an optical switch, a rotary encoder, a Hall effect sensor or any combination thereof. 10. The system of claim 1, comprising the actuator and a valve configured to be actuated by the actuator. 11. A method of monitoring a position of an actuator, comprising: transferring linear motion of an actuating element of the actuator to a first rotational motion;transferring the first rotational motion to a second rotational motion via a gear box coupled to an external surface of the actuator, wherein the second rotational motion is configured to adjust the position of a visual position indicator, and wherein transferring linear motion of the actuating element of the actuator to the first rotational motion comprises coupling an outer shaft of a nested shaft arrangement to a piston of the actuator, and extending a pin of the outer shaft into a spiral slot of an inner shaft of the nested shaft arrangement; andmeasuring an angular position of a position shaft with a position indicator accessory. 12. The method of claim 11, wherein transferring the first rotational motion to the second rotational motion via the gear box coupled to the external surface of the actuator comprises gearing a first meter gear of the gear box coupled to the inner shaft with a second meter gear of the gear box coupled to a position shaft. 13. The method of claim 12, comprising transferring the second rotational motion from the position shaft to a spring shaft position indicator coupled to the visual position indicator. 14. The method of claim 13, comprising preloading a spring in torsion about the spring shaft position indicator and within the gear box. 15. A system, comprising: a rotary position indicator configured to integrate with an actuator, wherein the rotary position indicator comprises: a first shaft and a second shaft in a nested arrangement, wherein the first and second shafts are configured to transfer linear motion of an actuation component of the actuator into a first rotational motion; anda gear box configured to couple to the actuator, wherein the gear box is configured to transfer the first rotational motion to a second rotational motion of a position shaft, and wherein the gear box comprises a first meter gear coupled to the second shaft and a second meter gear coupled to the position shaft, wherein the first and second meter gears are geared with one another and are disposed crosswise relative to one another.
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이 특허에 인용된 특허 (1)
Boyle William G. (Dallas TX), Flow control valve system.
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