Patents Assigned to EWD Electronic-Werke Deutschland GmbH
  • Diaphragm for a loudspeaker
    Patent number: 5162619
    Abstract: A membrane for a loudspeaker is designed so as to facilitate manufacture and to improve the tone of the loudspeaker. The membrane consists of a first plastic film (5a) which serves to retain the shape and a second plastic film (56) laminated to the first film which serves to damper partial oscillations. The membrane is particularly suitable as a conical membrane for a loudspeaker for a television receiver.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: November 10, 1992
    Assignee: EWD Electronic-Werke Deutschland GmbH
    Inventors: Karl-Heinz Thiele, Jurgen Ehmann, Klaus Harbarth