Patents by Inventor Johannes Macher

Johannes Macher 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).

  • Piezoelectric sensor device with sensor housing and holder for holding a piezoelectric sensor element
    Patent number: 7661322
    Abstract: A piezoelectric sensor device, especially for use with a microbalance, with a sensor housing and a holder for holding a piezoelectric sensor element. In order to permit quick exchange of crystals and to minimize the size of the assembly, the holder is configured as a clamping element which has at least one elastic first arm for clamped holding of the contact region of the essentially strip-shaped piezoelectric resonator element, whose measuring region is subjected to a fluid stream to be measured.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: February 16, 2010
    Assignee: AVL List GmbH
    Inventors: Richard Schauperl, Peter Prenninger, Johannes Macher
  • Piezoelectric sensor device
    Publication number: 20080083284
    Abstract: The invention relates to a piezoelectric sensor device, especially for use with a microbalance, with a sensor housing and a holder for holding a piezoelectric sensor element. In order to permit quick exchange of crystals and to minimize the size of the assembly the holder is configured as a clamping element, which has at least one elastic first arm for clamped holding of the contact region of said essentially strip-shaped piezoelectric resonator element, whose measuring region is subjected to a fluid stream to be measured.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 10, 2008
    Inventors: Richard Schauperl, Peter Prenninger, Johannes Macher