Control system for flow adjusting valve

Details Control system for flow adjusting valve Control system for flow adjusting valve

2008-05-20

2008-05-20

Fristoe, Jr., John K. (Department: 3753)

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

C251S129040

Reexamination Certificate

active

07374148

ABSTRACT:
A control system for a flow adjusting valve, it uses rotation of a motor as the power force to move a terminal output axle and then to change the openness of the latter; and further includes a magnet and a magnetic inductive element in opposition to the magnet to count the number of rotating turns of the terminal output axle to obtain different fed back signals, thus the openness of the flow adjusting valve can be known; clutch gears are provided between the motor and the terminal output axle, when the clutch gears generate a getting off action, the maximum and the minimum states of the openness of the flow adjusting valve can be known by rotating forwards and backwards of the motor, this can be a reference method to have the frequency signals of the control system for the flow adjusting valve set zero for correction.

REFERENCES:
patent: 5517966 (1996-05-01), Kanazawa et al.
patent: 5856743 (1999-01-01), Juniman
patent: 6435169 (2002-08-01), Vogt
patent: 7239131 (2007-07-01), Halder et al.

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