Patents by Inventor John Prenger

John Prenger 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).

  • Scroll machine with single plate floating seal
    Publication number: 20060198748
    Abstract: A scroll machine utilizes a floating seal to isolate pressurized fluid to provide axial biasing. The floating seal is designed as a single piece plate with inner and outer annular seals. The inner and outer annular seals can be U-shaped, V-shaped or L-shaped and each configuration is oriented to provide pressure actuation of the seal. Additional embodiments add a discharge valve, a high temperature protection system or a high pressure protection system to the floating seal.
    Type: Application
    Filed: March 4, 2005
    Publication date: September 7, 2006
    Inventors: Walter Grassbaugh, John Prenger, Christopher Stover, Xiaogeng Su, Hanqing Zhu