Patents by Inventor Donald A. Kahn

Donald A. Kahn 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).

  • Valve having rotatable valve ball with calibrated orifice and coaxial upstream/downstream ports and angled taps to measure upstream/downstream pressures for flow measurement
    Patent number: 9016140
    Abstract: A valve includes a body having upstream and downstream ports to measure upstream and downstream pressures and configured on a common axis, and a ball arranged in the body to rotate re the common axis between open and closed positions to allow for fluid flow and no fluid flow. The ball has a calibrated member having a calibrated orifice to allow fluid flow and has a flow coefficient and upstream and downstream pressure taps located upstream and downstream of the calibrated orifice and in fluidic communication with the upstream and downstream ports to measure upstream and downstream pressures when in the open position and angled re the common axis, so a direct flow measurement of fluid flow is determined based on a measured pressure differential between upstream and downstream pressure taps re the flow coefficient of the calibrated orifice when in the open position.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: April 28, 2015
    Assignee: Fluid Handling LLC
    Inventors: Stanley P. Evans, Florin Rosca, Glenn E. Huse, Donald A. Kahn