Patents Assigned to Forschungszentrum Karlsrahe GmbH
  • Pressure wave sensor
    Patent number: 6127770
    Abstract: In a pressure wave sensor comprising a cylindrical housing having a piezo electric element disposed therein, which is forced by a spring against the front face of the housing, the front face consists of a metal foil and a pressure pad consisting of a soft metal is disposed between the piezo electric element and the metal foil, the spring force being sufficiently large to load the pressure pad beyond its yield limit.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: October 3, 2000
    Assignee: Forschungszentrum Karlsrahe GmbH
    Inventors: Wolfgang Hauser, Robert Gotz