Patents by Inventor Gottfried Pohlmann

Gottfried Pohlmann 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: 4161995
    Abstract: The loudspeaker is mounted within a hollow, essentially tubular body so that the loudspeaker structure extends into the tubular body. The tubular body is at least in part insertable into an opening of a vehicle panel, such as a dashboard, rear window shelf, or the like. The rear of the panel is closed off by a housing body, shaped to leave a space or chamber behind the tubular body; preferably, the housing body is made of a foam material, or includes, at the inside, a foam rubber material which may be of open pore structure at least in the region facing the tubular body.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: July 24, 1979
    Assignee: Blaupunkt-Werke GmbH
    Inventors: Gottfried Pohlmann, Egon Schneider
  • Patent number: 4027112
    Abstract: A body of foam substance forming a head-rest, for example a head restraint for an automobile seat, an aircraft seat, or the like, provides a housing and support for the loudspeaker; the forward or head-supporting surface has at least one recess, open to the front, formed therein in which the loudspeaker is located and supported. The portion of the foam material in the recess behind the loudspeaker has open pores whereas the outer or remaining surfaces of the body are essentially airtight, for example by having their pores closed or by being covered with an essentially airtight upholstering material, perforated only in the region through which the sound from the loudspeaker is to be transmitted. This arrangement permits flexible or soft membrane suspension of the loudspeaker and thus better transducing fidelity.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: May 31, 1977
    Assignee: Blaupunkt-Werke GmbH
    Inventors: Paul Heppner, Gottfried Pohlmann