Polymeric foam earplug

Details Polymeric foam earplug Polymeric foam earplug

1990-10-16

1993-04-20

Hafer, Robert A.

Surgery

Body protecting or restraining devices for patients or infants

Head or face protector

604369, A61F 1100

Patent

active

052033520

ABSTRACT:
Disclosed herein are hearing protective earplug constructions of the roll-down type. In one aspect the constructions employ means to limit the depth of insertion of the earplug into the ear canal and to facilitate proper insertion thereof. In another aspect, the constructions employ polymeric foam bodies adapted to be compressed, inserted into the ear canal and there allowed to expand to obturate the ear canal and whose recovery time is markedly and inversely temperature dependent.

REFERENCES:
patent: Re29487 (1987-12-01), Gardner
patent: 2262568 (1941-11-01), Wade
patent: 3736929 (1973-06-01), Mills
patent: 4158087 (1979-06-01), Wood
patent: 4193396 (1980-03-01), Wacker
patent: 4293355 (1981-10-01), Wacker
patent: 4579112 (1986-04-01), Scott
patent: 4774938 (1988-10-01), Leight

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1519226