Patents by Inventor Christoph Vorwerk

Christoph Vorwerk 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).

  • Backflow orifice for controlling noise generated by a rotary compressor
    Patent number: 6589034
    Abstract: The invention relates to the design of backflow orifices for a rotary compressor serving as a compressor for an engine. One example of such a rotary compressor is a roots blower. The fluid conveyed by two oppositely rotating rotors from an inlet to an outlet of the compressor flows back partially via the backflow orifices. The edges of the backflow orifices are at a varying height from an inner surface contour of the pump casing. The height variation contributes to a reduction in the noise generated by the compressor.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: July 8, 2003
    Assignee: Ford Global Technologies, Inc.
    Inventors: Christoph Vorwerk, Volker Heumann
  • Backflow orifice for controlling noise generated by a rotary compressor
    Publication number: 20030039568
    Abstract: The invention relates to the design of backflow orifices for a rotary compressor serving as a compressor for an engine. One example of such a rotary compressor is a roots blower. The fluid conveyed by two oppositely rotating rotors from an inlet to an outlet of the compressor flows back partially via the backflow orifices. The edges of the backflow orifices are at a varying height from an inner surface contour of the pump casing. The height variation contributes to a reduction in the noise generated by the compressor.
    Type: Application
    Filed: August 21, 2002
    Publication date: February 27, 2003
    Applicant: Ford Global Technologies, Inc.
    Inventors: Christoph Vorwerk, Volker Heumann