Patents by Inventor Ingemar Franzen

Ingemar Franzen 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 pump
    Patent number: 3972643
    Abstract: A centrifugal pump with its impeller arranged beside the main media current in the pump housing (Vortex impeller pump) is provided with an inner part of resilient material which part forms the inlet of the pump. When a certain maximum volume goes into the pumphousing, the inlet edges fold inwards thus diminishing the inlet area and preventing the volume current from increasing over a certain value.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: August 3, 1976
    Assignee: ITT Industries, Inc.
    Inventor: Ingemar Franzen