Hearing protective earplug having alternative modes of insertion

Details Hearing protective earplug having alternative modes of insertion Hearing protective earplug having alternative modes of insertion

1992-01-09

1993-02-23

Hafer, Robert A.

Surgery

Body protecting or restraining devices for patients or infants

Head or face protector

A61F 1100

Patent

active

051881233

ABSTRACT:
A hearing protective earplug which permits alternative push-in and roll-down modes of insertion. The earplug includes a soft, smoothly contoured, resilient, homogeneous viscoelastic polymeric foam main body element having a manipulable stem axially embedded therein and extending outwardly from its base.

REFERENCES:
patent: Re29487 (1977-12-01), Gardner
patent: 2538339 (1951-01-01), Thomas
patent: 3881570 (1975-05-01), Lewis
patent: 4122841 (1978-10-01), Rock
patent: 4158087 (1979-06-01), Wood
patent: 4253452 (1981-03-01), Powers
patent: 4314553 (1982-02-01), Westerdal
patent: 4774938 (1988-10-01), Leight
patent: 4867149 (1989-09-01), Falco

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