×

EARPHONE HAVING SOUND DETOUR PATH

  • US 3,586,794 A
  • Filed: 11/01/1968
  • Issued: 06/22/1971
  • Est. Priority Date: 11/04/1967
  • Status: Expired due to Term
First Claim
Patent Images

1. A dynamic acoustic transducer, suitable for being used as an earphone, comprising a. a diaphragm having a resonant frequency in the lower transmission range, b. at least one front sound outlet on one side of said diaphragm suitable for acting directly on the entrance to the auditory canal, c. at least one year sound outlet on the other side of said diaphragm which provides a detour path for sound, and d. acoustically damping spacer means for preventing the sealing off of the entrance to the auditory canal with respect to the air space surrounding the acoustic transducer, sound reaching said auditory canal by a first path comprising said front sound outlet and acoustically damping spacer means, and by a second path comprising said rear sound outlet and said acoustically damping means.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×