公开(公告)号：US3872559A

公开(公告)日：1975-03-25

申请号：US32274973

申请日：1973-01-11

Applicant: LEIGHT CHARLES

Inventor： LEIGHT CHARLES

IPC: A61F11/08 ,  A61F11/02

CPC classification number: A61F11/08

Abstract: A sound attentuating ear plug molded of a single piece of material intended to fit into the ear canal and be held there without external means. The plug is made of a material having special sound attentuating qualities and is provided with a vent that permits the equalization of pressure within the ear canal and the surrounding atmosphere.

Abstract translation: 一种注意耳塞，由单件材料模制，用于装配到耳道中，并且在没有外部手段的情况下保持在那里。 插头由具有特殊声音质量的材料制成，并且设置有允许耳道内和周围大气压力均衡的排气口。