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。

公开(公告)号：US3842829A

公开(公告)日：1974-10-22

申请号：US19990871

申请日：1971-11-18

Applicant: ELLIS C

Inventor： ELLIS C

IPC: A61F11/08 ,  A61F11/02

CPC classification number: A61F11/08 ,  A61F2011/085

Abstract: A device to be worn within the external auditory canal for the purpose of protecting the ear from high intensity and impact sounds. Under normal conditions transmission is through a diaphragm with minimal attenuation. Under high intensity noise levels the diaphragm is damped by approach to a support area axially separated from the free position of the diaphragm, the film of air between the support surface and the diaphragm introducing viscous damping. Under high impact and extremely high sound levels, the diaphragm rests upon the support surface and the effective diameter of the diaphragm is thereby reduced giving a marked further reduction in sound transmission, the diaphragm becoming in effect a sound actuated poppet valve.

公开(公告)号：US3768470A

公开(公告)日：1973-10-30

申请号：US3768470D

申请日：1971-07-21

Applicant: LEIGHT H

Inventor： LEIGHT H

IPC: A61F11/08 ,  A61F11/12 ,  A61F11/02

CPC classification number: A61F11/12 ,  A61F11/08

Abstract: An ear protector to reduce the effect of high intensity sound upon the human ear. The protector includes a band or other resilient means extending over, under, or around the head and provided with a soft resilient pod at each end. Each pod is formed of a soft resilient material and has an air cushion portion adapted to fit into and over the opening to the ear canal.

公开(公告)号：US3415246A

公开(公告)日：1968-12-10

申请号：US67782267

申请日：1967-09-25

Applicant: SIGMA SALES CORP

Inventor： HILL GEORGE M

IPC: A61F11/08

CPC classification number: A61F11/08 ,  A61F11/12

公开(公告)号：US3050056A

公开(公告)日：1962-08-21

申请号：US80817959

申请日：1959-04-22

Applicant: DRESSLER CAROL M

Inventor： DRESSLER CAROL M

IPC: A61F11/08

CPC classification number: A61F11/08

公开(公告)号：US2942270A

公开(公告)日：1960-06-28

申请号：US69375957

申请日：1957-10-31

Applicant: ENRIGHT WILLIAM F

Inventor： ENRIGHT WILLIAM F

IPC: A61F9/04 ,  A61F11/08

CPC classification number: A61F11/08 ,  A61F9/04 ,  A61F11/12

公开(公告)号：US2910980A

公开(公告)日：1959-11-03

申请号：US66027757

申请日：1957-05-20

Applicant: DOW CHEMICAL CO

Inventor： STEWART RICHARD D

IPC: A61F11/08

CPC classification number: A61F11/08

公开(公告)号：US2717596A

公开(公告)日：1955-09-13

申请号：US42545654

申请日：1954-04-26

Applicant: KNIGHT JOHN S

Inventor： KNIGHT JOHN S

IPC: A61F11/08

CPC classification number: A61F11/08 ,  A61F2011/085

公开(公告)号：US2619960A

公开(公告)日：1952-12-02

申请号：US19906550

申请日：1950-12-04

Applicant: REYNOLDS LEE T

Inventor： REYNOLDS LEE T

IPC: A61F11/08

CPC classification number: A61F11/08

公开(公告)号：US2465606A

公开(公告)日：1949-03-29

申请号：US77946947

申请日：1947-10-13

Applicant: REYNOLDS LEE T

Inventor： REYNOLDS LEE T

IPC: A61F11/08

CPC classification number: A61F11/08 ,  Y10T137/7866