Patents by Inventor Albin J. Niemiec

Albin J. Niemiec 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: 4072451
    Abstract: In a rotary sliding vane pump having a non-circular cam ring which expands and contracts radially, a cheek plate is clamped against the end face of the cam ring and lies in rubbing contact with the rotor and vanes. The cheek plate has a wearing face of low friction material such as bronze. Unwanted wear between the cheek plate and the cam ring due to its expansion/contraction movements is reduced by the provision of one or more areas of hard metal adjacent the cam ring.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: February 7, 1978
    Assignee: Sperry Rand Corporation
    Inventor: Albin J. Niemiec
  • Patent number: 4008002
    Abstract: A balanced rotary sliding vane pump has a flexible cheek plate slightly spaced from the rotor and vanes. A hydrostatic pressure pad exposed to outlet pressure urges the cheek plate to deflect toward the rotor and is fully effective at low speeds. A pressure force opposing this deflection at higher speeds is produced by restricting the outlet for fluid discharged by the inwardly moving vanes, thus augmenting the pressure field applied in the clearance space between the rotor and the cheek plate. This speed responsive change in the cheek plate deflection provides for a high volumetric efficiency at slow speeds and also reduces the possibility of cheek plate wear and seizure at higher speeds when volumetric efficiency is less important.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: February 15, 1977
    Assignee: Sperry Rand Corporation
    Inventors: Albin J. Niemiec, Raymond B. Pettibone