Patents by Inventor Norbert Sparwell

Norbert Sparwell 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).

  • Method and device for the dynamic and density-independent determination of mass flow
    Patent number: 4448081
    Abstract: Method for the dynamic and density-independent determination of the mass flow of fluids. A single vortex generating bluff body is placed in the flow to generate vortices according to the principle of the Karman vortex path. The dynamic pressure (1/2.rho.v.sup.2) is determined via the effect of the drag directly at this bluff body. The velocity of flow (v) is determined via the effect of the vortex shedding at the bluff body. The mass flow is determined according to the equation:m=2.multidot.(1/2.rho.v.sup.2).multidot.1/2.multidot.Awherein A is the cross section of the flow channel.Device for implementing such method. The device consists essentially of a vortex-generating bluff body having one or two fixed ends, which itself serves as a transducer or at which one or two transducers are provided. An electronic system for processing the resultant signal is available.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: May 15, 1984
    Assignee: Battelle-Institut e.V.
    Inventors: Jorg Kolitsch, Norbert Sparwell, Eugen Brockmann