Patents by Inventor Ian Marsac

Ian Marsac has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7025089
    Abstract: The system for accurately measuring choke position includes a choke position indicator; a choke adapted to control the flow of high pressure fluids during completion or drilling of a well, wherein the distance between the choke's gate to the choke's seat determines the amount of high pressure fluids that pass through the choke; a magnet mounted on the actuator shaft; a magneto/hall device mounted to the stationary housing for sensing the location of the magnet as the choke actuator shaft moves and providing an analog signal; a power wire connecting the magneto/hall device to a power source; a ground wire to ground the magneto/hall device; a signal wire to transmit the analog signal; an analog-to-digital converter for receiving and converting the analog signal to a digital signal; and a processor for converting the digital signal into choke shaft positions and transmitting the choke shaft positions to the choke position indicator.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: April 11, 2006
    Inventor: Ian Marsac