Banded earplug

Details Banded earplug Banded earplug

1987-06-18

1989-04-11

Hafer, Robert A.

Surgery

Body protecting or restraining devices for patients or infants

Head or face protector

128152, A61F 1100

Patent

active

048196240

ABSTRACT:
Earplug assemblies are provided for mounting at the ends of a resilient band, which readily deform to tightly seal to the walls of the ear that surround the entrance to the ear canal. Each assembly includes a shell having a closed forward end that presses against the ear and an open rear end that receives an armature mounted on the band. The shell has a front end tapered at a large angle such as 90.degree., while the armature has a forward portion tapered at a small angle such as 20.degree., to leave an air gap between the forward portions of the shell and armature. With the forward tip of the armature pressing against the center of the shell front, outer portions of the shell front can deflect rearwardly and radially inwardly into the air gap.

REFERENCES:
patent: 997673 (1911-07-01), Hegge
patent: 1279396 (1918-09-01), Michelson et al.
patent: 2246737 (1941-06-01), Knudsen
patent: 2888921 (1959-06-01), Nielson et al.
patent: 3080011 (1963-03-01), Henderson
patent: 3301253 (1967-01-01), Glorig
patent: 4122841 (1978-10-01), Rock et al.
patent: 4434794 (1984-03-01), Leight
patent: 4461290 (1984-07-01), Gardner, Jr. et al.
patent: 4490857 (1985-01-01), Leight et al.
patent: 4671265 (1987-06-01), Andersson

Affiliated with

Also associated with

Rating

Banded earplug does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Banded earplug, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Banded earplug will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-659780