Headphone comfort

  • US 4,922,542 A
  • Filed: 12/28/1987
  • Issued: 05/01/1990
  • Est. Priority Date: 12/28/1987
  • Status: Expired due to Term
First Claim
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1. Headphone apparatus comprising,a baffle,a driver supported by said baffle for converting an input electrical signal into an acoustical output signal and having a vibratile diaphragm with a front and a rear,a structure bounding a front cavity receiving acoustic energy from the front of said diaphragm and said structure bounding a portion of a rear cavity which rear cavity is for receiving acoustic energy from the rear of said diaphragm,said structure comprising means for controlling the transmission of acoustic energy between said rear and front cavities,a headphone cup attached to said structure and bounding the remainder of said rear cavity and comprising means for controlling transmission of acoustic energy between the diaphragm rear and air outside said apparatus,and a cushion having an opening large enough to encompass the outer ear, mounted on the headphone cup for establishing a seal between the front cavity and a region outside said apparatus.

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