Patents by Inventor Michael H. Shepard

Michael H. Shepard 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 apparatus for controlling flow rate of fluid
    Patent number: 4738665
    Abstract: A method and an apparatus for controlling the flow rate of a fluid are disclosed. Fluid is flowed through an elongated passage having a small cross-sectional area to control the flow rate thereof. The length of the elongated passage through which the fluid is flowed is changed in a predetermined manner to change the flow rate of fluid. The apparatus comprises a first member having a spiral shaped elongated groove with a small cross-sectional area formed in a surface thereof and a second member having a surface overlying the groove to form the elongated passage for controlling the flow rate of the fluid.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: April 19, 1988
    Assignee: Hall Hill Co.
    Inventor: Michael H. Shepard