Patents by Inventor Ulrich Kirchner

Ulrich Kirchner 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).

  • Stethoscope
    Patent number: 5022487
    Abstract: A stethoscope includes a sound pickup and a reverberation chamber defined in a housing. The reverberation chamber is acoustically connected to binaurals through a connecting tubing. The reverberation chamber includes at least one sound inlet opening and the sound pickup includes at least one sound outlet opening, wherein at least one sound outlet opening and at least one sound inlet opening are arranged so as to be at least partially overlapping. The relative position of the at least one sound inlet opening and the at least one sound outlet opening is adjustable.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: June 11, 1991
    Assignee: Kirchner & Wilhelm GmbH & Co.
    Inventor: Ulrich Kirchner