초록

There is disclosed herein a multiple flange earplug composed of a resilient soft polymeric material.

대표청구항 ▼

An earplug composed of a resilient polymeric material and comprising: an elongate stalk member having a nose end; a flange array comprising at least three hollow, rearwardly extending flange elements of substantially circular crossections and of serially increasing diameters integrally affixed to sa

An earplug composed of a resilient polymeric material and comprising: an elongate stalk member having a nose end; a flange array comprising at least three hollow, rearwardly extending flange elements of substantially circular crossections and of serially increasing diameters integrally affixed to said stalk member at spaced intervals along at least a portion of the length thereof, the flange element of the smallest diameter being located at said nose end; each said flange element being of generally hemispherical shape, comprising a thin skirt having a substantially uniform thickness of between about 0.008 inch (0.20 mm) and about 0.050 inch (1.27 mm) and being composed of a resilient polymeric material of construction having a Shore A Durometer hardness value of between about 10 and about 90; the diameter of each portion of said stalk member underlying each skirt being such as to define an annular free space between the interior surface of said skirt and said stalk member.