Patents by Inventor Angus J. Bishop

Angus J. Bishop 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).

  • Cleaning device
    Patent number: 6554138
    Abstract: The invention relates to a device for cleaning the filter surface of a filter element, through which the liquid to be filtered flows, during a filtration operation using a pressurised cleaning fluid. According to an improvement of the invention, a distribution device is provided which delivers an essentially even pressure distribution of the cleaning fluid over the entire area of the filter surface to be cleaned.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: April 29, 2003
    Assignee: DISA A/S
    Inventors: Klaus Bihlet, Angus J. Bishop
  • Pump
    Patent number: 4947491
    Abstract: A pump comprising a flexible member defining at least part of a variable volume pumping chamber, an inlet valve to permit of liquid to enter the chamber thereby and an outlet valve to permit of liquid to leave the chamber thereby, and an operating member to deform the flexible member to vary the volume of the pumping chamber to pump liquid into and out of the chamber.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: August 14, 1990
    Assignee: Portasilo Limited
    Inventors: Brian Parkinson, Angus J. Bishop, Richard L. Tagg