Patent ID: 8447059
Filing Date: 2013-05-21
Classification: H04R

Abstract:
1. An earphone device, comprising: a casing enclosing at least one drive unit therein; a rigid hollow tube protruding from said casing and terminating in an acoustic output port; a movable cap disposed on the exterior of said casing such that the hollow tube passes through an opening in the movable cap; and a resiliently compressible material at least partially surrounding the exterior of the rigid hollow tube and gripped thereby; wherein relative motion of the movable cap with respect to the hollow tube causes the compressible material to compress in shape or decompress to an original form, the compressible material being gradually squeezed as the movable cap presses against it while moving forward relative to the acoustic output port of the hollow tube and being gradually released as the movable cap moves away from the acoustic output port.