Patents by Inventor Joachim A. Dunnebacke

Joachim A. Dunnebacke 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).

  • Fader circuit arrangement in electrical reproducing apparatus and fader control for such an arrangement
    Patent number: 4682364
    Abstract: The invention relates to a fading arrangement in electrical reproduction apparatus, for fading the signals supplied to two reproduction units by a signal source, comprising a variable resistor whose resistance track co-operates with wiper means which, when moved along said track, connect a fading resistance which decreases from the maximum value to the minimum value in series with one reproduction unit and a fading resistance which increases from the minimum value to the maximum value in series with the other reproduction unit. Additional variable resistors (R.sub.Z) are arranged in parallel with the reproduction units (R.sub.L1, R.sub.i1 +R.sub.L1 ; R.sub.L2, R.sub.i2 +R.sub.L2). During the common movement of all the wiper means the additional wiper means vary the resistance values of the additional resistors (R.sub.2, 100 R.sub.2) oppositely, in such a way that the resistance value of the additional resistor (R.sub.
    Type: Grant
    Filed: July 12, 1985
    Date of Patent: July 21, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Joachim A. Dunnebacke