Patents by Inventor Barry Reginald Marshall

Barry Reginald Marshall 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).

  • Patent number: 5722350
    Abstract: A dip cup comprises a compressible container for containing a liquid including a foaming agent, a cup mounted on the container, a foaming device for drawing air into liquid in the container as the container expands from a compressed state to cause the liquid to foam, and passage means between the container and the cup and through which foam can pass from the container to the cup as the container is compressed. The foaming device is arranged to draw air into liquid in the container from the exterior of the dip cup and includes a valve for preventing the contents of the container from being expelled via the foaming device when the container is compressed. A one way valve may be provided in the passage means to prevent the return of foam from the cup to the container.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: March 3, 1998
    Assignee: Ambic Equipment Limited
    Inventor: Barry Reginald Marshall