Patents by Inventor Ludwig Klapproth

Ludwig Klapproth 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).

  • Patent number: 6584202
    Abstract: A method and an arrangement for reproducing a stereophonic or multi-channel audio signal in a space, particularly in the passenger compartment of a motor vehicle, is described Loudspeakers for reproducing acoustic signals are arranged at a plurality of positions in the space, and an amplitude and phase of the acoustic signals radiated from each loudspeaker are influenced so that wave fronts of the acoustic signals radiated by the loudspeakers overlap to form at least one first resulting wave front for a left channel and a second resulting wave front for a right channel of the stereophonic audio signal, so that the resulting wave fronts intersect in a listening zone within the space, and yield a stereo aural impression inside the listening zone.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: June 24, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Christoph Montag, Hermann Holtsmannspoetter, Ludwig Klapproth, Christian Vehorn
  • Patent number: 4098513
    Abstract: The chassis of a recording and/or reproducing apparatus such as a record player is mounted to a fixed structure such as a housing of the apparatus by one or more suspension devices. The chassis, parts carried thereby and the suspension device or devices are arranged to form an oscillatory system in which the vertical and the horizontal oscillating movements are decoupled from each other so that the three orthogonal oscillation directions or directions of movement do not mutually influence each other.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: July 4, 1978
    Assignee: Geratewerke Lahr GmbH
    Inventors: Ludwig Klapproth, Gerhart Metzler, Peter Rother