The cavity (16) provides the earplug (10) a lower equilibrium pressure making the earplug (10) more confortable.

A hearing protection device and a method of manufacturing thereof is provided.

A bullet-shaped molded foam earplug (10) is provided with a cavity (16) extending from the flanged base (14) axially into the earplug (10).

The second leg end (20) is receptive to a hearing protector (101), whereby the device functions as a hearing protection device.

There is disclosed herein a single-flange hearing protective earplug of the push-in type.

A method of manufacture of the hearing protective device of the present invention is also presented.

The earplug (10) is formed in a mold having a base (20) containing a plurality of spaced apart cavities (22).

A bone vibrator is used in tandem with an amplified microphone and an in-ear-type hearing protection apparatus.

An acoustical hearing device (10) is presented, comprising a foam (12), and at least one porous component (14) which is mechanically bonded to the foam (12).

A top plate (21) having a plurality of pins (32) is fitted onto the base (20) such that the pins (32) enter the mold and define the cavity (16) of each earplug (10).

The cavity (16) provides the earplug (10) a lower equilibrium pressure making the earplug (10) more confortable.

A hearing protection device and a method of manufacturing thereof is provided.

A bullet-shaped molded foam earplug (10) is provided with a cavity (16) extending from the flanged base (14) axially into the earplug (10).

The second leg end (20) is receptive to a hearing protector (101), whereby the device functions as a hearing protection device.

There is disclosed herein a single-flange hearing protective earplug of the push-in type.