Patents by Inventor Bryan E. Ellis

Bryan E. Ellis 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).

  • Positive displacement pumps
    Patent number: 4511316
    Abstract: A positive displacement pump comprising two lobed impellors to contra-rotate within a casing which has two ports to act respectively as an inlet and an outlet, the casing having two impellor chambers, each chamber being peripherally defined by two arcs, at least one of the arcs of each chamber being centered at a point offset from the normal rotational axis of the associated impellor in a direction towards one port.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: April 16, 1985
    Assignee: SSP Pumps Limited
    Inventor: Bryan E. Ellis