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Telephone set having a microphone for receiving or an earpiece for generating an acoustic signal via a keypad

  • US 6,052,464 A
  • Filed: 05/29/1998
  • Issued: 04/18/2000
  • Est. Priority Date: 05/29/1998
  • Status: Expired due to Fees
First Claim
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1. A telephone set comprising:

  • a first housing;

    a second housing;

    an attachment mechanism coupled to the first housing and the second housing and adapted to permit the first housing to be moveable relative to the second housing between a first position and a second position;

    a microphone carried by the first housing and adapted to convert an acoustic input signal into an electric input signal;

    an earpiece carried by the second housing and adapted to convert an electric output signal into an acoustic output signal;

    a display carried by the second housing; and

    a keypad carried by the second housing,wherein the keypad is disposed between the display and the microphone when the first housing is moved relative to the second housing to the second position,wherein the keypad has an inside surface disposed essentially opposite to an outside surface, the inside surface and the outside surface facing towards and away from, respectively, the second housing,wherein at least one of the outside surface of the keypad and the second housing is shaped to form a concave ear cup,wherein the keypad has a plurality of pushbutton keys arranged in a predetermined pattern, an outside edge of each of the plurality of pushbutton keys that is located near an outside edge of the predetermined pattern representing a perimeter of the keypad,wherein the keypad has an aperture extending through the keypad between the inside surface and the outside surface of the keypad, the aperture being disposed within the perimeter of the keypad and the aperture being disposed between the plurality of pushbutton keys, andwherein the earpiece faces the inside surface of the keypad and is disposed essentially opposite to the aperture of the keypad to permit the acoustic output signal generated by the earpiece to be ported through the aperture of the keypad.

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