Patents by Inventor Ralph E. Griinke

Ralph E. Griinke 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).

  • Plural-rate surge-suppressing valve
    Patent number: 5085246
    Abstract: A valve is disclosed for use in suppressing surges of fluid flow therethrough by means of first and second flow paths the former of which has the greater fluid-handling capability but which also is subject to being closed to suppress a surge, while the latter remains open to bleed the surge pressure and effect re-opening of the former for normal flow subsequent to the surge.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: February 4, 1992
    Inventor: Ralph E. Griinke