Patents by Inventor E. Stephen Tokarchuk

E. Stephen Tokarchuk 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).

  • Means for suppressing cavitation in a high pressure relief valve
    Patent number: 4016898
    Abstract: The suppression of bubble formation and cavitation in the fluid passing through a high pressure relief valve is achieved by a back pressure valve in the relief valve discharge line. The back pressure valve has differential area pistons which maintain a back pressure of a fixed ratio to the high pressure at the relief valve inlet, this ratio being at least 1:3.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: April 12, 1977
    Assignee: Sperry Rand Corporation
    Inventors: E. Stephen Tokarchuk, Gaylord O. Ellis