Patents by Inventor Kevin J. Skelton

Kevin J. Skelton 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 selectively varying the flow rate of service liquid through a two stage liquid ring vacuum pump
    Patent number: 5366348
    Abstract: A two stage liquid ring vacuum pump having a selectively variable flow rate of service liquid through a first stage and a second stage. The flow rate through the second stage is reduced by venting service liquid from the second stage prior to normal passage through a discharge port. The vented service liquid is introduced in the first stage to enhance the pumping capacity of the first stage.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: November 22, 1994
    Assignee: Graham Manufacturing Co., Inc.
    Inventor: Kevin J. Skelton