Patents by Inventor Heinrich J. Braum

Heinrich J. Braum 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: 4621982
    Abstract: A main pump (rotary vane pump 1) and a secondary pump (radial piston pump 2) are driven by way of a common shaft (3), a cam ring (30) being used to drive the secondary pump. The cam ring is coupled to the shaft (3) by way of a shear pin (33). If the auxiliary pump locks, the shear pin fractures and the cam ring (30) can rotate relative to the shaft (3). In that case, the fracture portions of the shear pin (33) are driven into their respective bores (34, 35), thereby avoiding excessive friction and overheating. Therefore, the main pump can continue to operate in spite of the failure of the auxiliary pump.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: November 11, 1986
    Assignees: Vickers System GmbH, Daimler-Benz Aktiegesellschaft
    Inventors: Rene Schulz, Heinrich J. Braum, Kurt Nadolny, Van-Trung Nguyen