Patent ID: 8573353
Filing Date: 2013-11-05
Classification: A61F,H04R

Abstract:
1. An ear tip comprising: a foam body; and a stem comprising one or more sound tubes therethrough; wherein: the foam body comprises a front portion having a front and a rear portion having a rear; the front portion of the foam body comprises a nose angled to improve insertion; the foam body comprises a centerline and a through passage located on the centerline; the stem is located along the centerline in the passage; at least a portion of the passage is approximately the same width as the stem; a front portion of the passage forms a concave opening in the nose of the foam body; the stem extends from the concave opening rearward along the centerline of the foam body past the rear end of the foam body; a rear portion of the passage widens to form a hollowed-out annular space about the stem so that the rear portion of the foam body comprises an integrated unsupported rear extension flange consisting of foam encompassing the annular space and the stem, such that the stem is inset radially inward from the rear extension flange so that no portion of the stem contacts the rear extension flange and the annular space encircles the stem and provides for inward deflection of the rear extension flange during insertion of the ear tip into a user's ear canal; a plurality of semi-spherical scalloping indentations are located on a periphery of the nose of the foam body and are evenly space about the periphery; the stem is in contact with at least a portion of the front portion of the foam body and is directly attached to the foam body; the foam body is made of polyurethane foam; and the stem is made of elastomeric polyurethane.