Patents by Inventor Johann Stubenberg

Johann Stubenberg 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).

  • Pressure sensor
    Patent number: 4711129
    Abstract: A pressure sensor which comprises one or more measuring elements situated in a housing and a plate membrane sealing the housing against the medium to be measured and being attached to the measuring element on order to transmit the pressure to be measured, the plate membrane having curved or conically-shaped part which extends into the interior of the housing and compensates for temperature shock drifting.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: December 8, 1987
    Assignee: AVL Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof. Dr.Dr.h.c. Hans List
    Inventors: Johann Stubenberg, Heimo Denk, Rudolf Zeiringer
  • Piezoelectric sensor element with at least two single crystal elements
    Patent number: 4667127
    Abstract: Individual single crystal elements stacked one above the other are aligned with their optical (Z) axes parallel to each other, and are provided with contact electrodes on opposite surfaces normal to their electrical (X) axes. Contact electrodes of the same polarity are conductively connected by two bridge electrodes that are applied to opposite sides of the assembled stack of individual crystal elements in the form of a conductive coating, and are provided with a lead leaving the sensor element. Contact electrodes of the opposite polarity are recessed in the vicinity of the bridge electrode serve the other polarity.
    Type: Grant
    Filed: June 10, 1986
    Date of Patent: May 19, 1987
    Assignee: AVL Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List
    Inventors: Peter W. Krempl, Johann Stubenberg, Alfred Enko