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Valve control apparatus

  • US 10,571,937 B1
  • Filed: 02/06/2018
  • Issued: 02/25/2020
  • Est. Priority Date: 01/23/2014
  • Status: Active Grant
First Claim
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1. A fluid regulator, comprising:

  • a shaft configured with at least;

    a cam, anda crank;

    an electric motor capable of rotating the shaft;

    an electric circuit comprising;

    a capacitor having a first capacitor terminal and a second capacitor terminal, the first capacitor terminal capable of being coupled to a power source and the second capacitor terminal coupled to the electric motor;

    a switching circuit comprising one or more switches including at least one relay, the switching-circuit having a least one switching circuit terminal coupled to the second capacitor terminal and at least one switching circuit terminal coupled to the electric motor;

    a first housing, the first housing comprising;

    a first port that enables a bi-directional fluid path to an output valve, anda second port, wherein the second port is adapted to interface with a fluid source upstream from the output valve;

    a spool contained within the first housing, the spool in operative communication with the shaft via the crank, wherein the spool is adapted to travel within the first housing;

    an actuator configured to;

    open the output valve at least partly in response to;

    at least one switching circuit switch being opened in response to a current flow through the relay, which causes the electric motor to rotate the shaft towards a first shaft position and movement of the spool towards a first spool position which in turn causes,the cam to interface with the electric circuit, which in turn causes the shaft to stop at the first shaft position and the spool to stop at the first spool position, which enables a first fluid flow from the output valve to the first port;

    close the output valve at least partly in response to;

    at least one switching circuit switch being closed in response to a loss of the current flow through the relay, which causes the capacitor to discharge into the electric motor to rotate the shaft to towards a second shaft position and initiate movement of the spool towards a second spool position, which in turn causes,fluid pressure entering via the second port to assist movement of the spool towards a second spool position, which in turn causes,the cam to interface with the electric circuit, which in turn causes the shaft to stop at the second shaft position and the spool to stop at the second spool position, which enables a second fluid flow from the first port to the output valve.

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