Patent ID: 8731228

Claim:
An ear interface for an ear phone, which physically engages with and acoustically connects to a user's ear, the ear interface comprising: a hollow, flexible body that is adapted to fit in the concha of the user's ear, the body having a generally oval perimeter that generally corresponds to the perimeter of the concha, the body further having a smooth, generally flat oval contact face adapted to overlie the surface of the concha of the user's ear, the contact face having an elongate crus relief groove extending transversely across it for accommodating the crus of helix of the user's ear; a first portion of the perimeter of the body being adapted to fit under the tragus and an adjacent second portion of the perimeter of the body being adapted to fit under the antitragus when the body is engaged in the concha; a tube projecting from the generally flat oval contact face adjacent one end, and adapted to extend into the user's ear canal, the tube having a circumference less than the circumference of the ear canal so that the tube does not contact the surface of the ear canal around its entire circumference, the perimeter of the hollow, flexible body being generally smooth, with at least one of a first plurality of recesses in the perimeter of the hollow, flexible body, generally opposite from the tube, defining a plurality of raised traction features for engaging the wall of the concha, and a second plurality of recesses in the second portion of the perimeter of the hollow, flexible body, defining a plurality of raised traction features for engaging the wall of the concha of the user's ear below the antitragus, wherein the first plurality of recesses and the second plurality of recesses are situated on opposite sides of the elongate crus relief groove.