Patents by Inventor Karl E. Uth

Karl E. Uth 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 barrier face seal
    Patent number: 6494460
    Abstract: Rotary barrier face seal of the non-contact type seal with helical grooves for a housing and a shaft, comprising means for introduction of an external barrier fluid towards the sealing interface. Said barrier fluid prevents sealed process fluid from entering past the sealing interface, thus providing sealing means for hazardous or repugnant fluids.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: December 17, 2002
    Inventor: Karl E. Uth
  • Rotary sealing assembly
    Patent number: 6494458
    Abstract: A sealing assembly for a rotatable shaft, comprising means to generate pressure differentials and temperature through pumping action and means to seal fluid, for example of the non-contact helical groove type. Sealing means are positioned outboard of pumping means. Fluid in liquid form is heated and depressurized on passage through pumping means of vortex or viscous shear type, thereby changed from liquid to gas. Gasified fluid is then sealed by sealing means for low leakage operation.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: December 17, 2002
    Inventor: Karl E. Uth
  • Rotary barrier face seal
    Publication number: 20020079648
    Abstract: Rotary barrier face seal of the non-contact type seal with helical grooves for a housing and a shaft, comprising means for introduction of an external barrier fluid towards the sealing interface. Said barrier fluid prevents sealed process fluid from entering past the sealing interface, thus providing sealing means for hazardous or repugnant fluids.
    Type: Application
    Filed: December 26, 2000
    Publication date: June 27, 2002
    Inventor: Karl E. Uth
  • Rotary sealing assembly
    Publication number: 20020074731
    Abstract: A sealing assembly for a rotatable shaft, comprising means to generate pressure differentials and temperature through pumping action and means to seal fluid, for example of the non-contact helical groove type. Sealing means are positioned outboard of pumping means. Fluid in liquid form is heated and depressurized on passage through pumping means of vortex or viscous shear type, thereby changed from liquid to gas. Gasified fluid is then sealed by sealing means for low leakage operation.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 20, 2002
    Inventor: Karl E. Uth