Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1986-12-05
1989-11-14
Fuller, Benjamin R.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181135, 381 686, A61B 702, H04R 2502
Patent
active
048800767
ABSTRACT:
Detachably secured to the ear piece of a hearing aid is a user-disposable sleeve comprising soft polymeric retarded recovery foam that can be compressed to be freely insertable into a person's ear canal and then allowed to recover to become wedged in the canal. The sleeve preferably includes a flexible, elongated plastic duct over which the foam fits, and the duct is formed with a screw thread of a rigid plastic which mates with a screw thread on the ear piece for easy attachment and removal. The external surface of the foam preferably is substantially cylindrical and can be formed with flutes to provide venting of the user's ear.
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Ahlberg Carl S.
Bushong Jerold W.
Chamberlin Davis W.
Kolpe Vasant V.
Oliveira Robert J.
Fuller Benjamin R.
Kirn Walter N.
Lilly James V.
Minnesota Mining and Manufacturing Company
Sell Donald M.
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