Patents by Inventor Paul A. Yahr

Paul A. Yahr 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).

  • STEPPER MOTOR OPERATED BALANCED FLOW CONTROL VALVE
    Publication number: 20160169401
    Abstract: A flow control valve includes a body having a body bore oriented coaxially with a longitudinal axis of the body and a seat member extending into the bore. A valve member is slidably disposed in the bore and oriented coaxially with the longitudinal axis of the body. The valve member includes a non-circular geometrically shaped head having a bore. A drive adapter includes a head receiving cavity slidingly receiving the geometrically shaped head of the valve member and preventing axial rotation of the valve member. A stepper motor is connected to the drive adapter, the stepper motor incrementally rotating a shaft engaged with the bore of the valve member. First and second equal diameter pistons of the valve member provide pressure balanced valve member operating positions.
    Type: Application
    Filed: January 13, 2015
    Publication date: June 16, 2016
    Applicant: Mac Valves, Inc.
    Inventors: Kevin C. Williams, Paul A. Yahr
  • Stepper motor operated balanced flow control valve
    Patent number: 8939173
    Abstract: A flow control valve includes a body having a body bore oriented coaxially with a longitudinal axis of the body and a seat member extending into the bore. A valve member is slidably disposed in the bore and oriented coaxially with the longitudinal axis of the body. The valve member includes a non-circular geometrically shaped head having a bore. A drive adapter includes a head receiving cavity slidingly receiving the geometrically shaped head of the valve member and preventing axial rotation of the valve member. A stepper motor is connected to the drive adapter, the stepper motor incrementally rotating a shaft engaged with the bore of the valve member. First and second equal diameter pistons of the valve member provide pressure balanced valve member operating positions.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: January 27, 2015
    Assignee: MAC Valves, Inc.
    Inventors: Paul A. Yahr, Kevin C. Williams
  • STEPPER MOTOR OPERATED BALANCED FLOW CONTROL VALVE
    Publication number: 20120012768
    Abstract: A flow control valve includes a body having a body bore oriented coaxially with a longitudinal axis of the body and a seat member extending into the bore. A valve member is slidably disposed in the bore and oriented coaxially with the longitudinal axis of the body. The valve member includes a non-circular geometrically shaped head having a bore. A drive adapter includes a head receiving cavity slidingly receiving the geometrically shaped head of the valve member and preventing axial rotation of the valve member. A stepper motor is connected to the drive adapter, the stepper motor incrementally rotating a shaft engaged with the bore of the valve member. First and second equal diameter pistons of the valve member provide pressure balanced valve member operating positions.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 19, 2012
    Applicant: MAC Valves, Inc.
    Inventors: Paul A. Yahr, Kevin C. Williams