Patents by Inventor Michael A. Logan

Michael A. Logan 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).

  • Rotary union for transmitting a high pressure medium
    Patent number: 6029695
    Abstract: A high pressure rotary union characterized by easy field maintenance and optimal simplified design. This design ensures high-speed operation without any significant loss of water pressure at pressures of about 4000 p.s.i. Vents are provided through which fluid bypassing the main seal exits the housing, providing an indication of loss of main seal. A secondary seal is provided to protect the bearing(s) from fluid.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: February 29, 2000
    Inventor: Michael Logan