Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1982-03-30
1984-03-20
Fuller, Benjamin R.
Acoustics
Anatomic or prosthetic relation
Ear and mouth
128152, A61F 1102, H04R 2500
Patent
active
044375387
ABSTRACT:
This invention concerns an ear protecting means and specially an ear-cap which protects the ear against dangerous noise. The object of the invention is to silence the dangerous noise while permitting talking communication between two persons. The invention consists of an ear-cap, which is placed against the exterior of an ear, and which includes a cushion which covers the ear and is of elastic and porous material, which transmits sound, the outside of said cushion being at least to its main part covered by a perforated disc, said disc defines a cavity which is closed beside the perforations, the thickness of said disc, the amount of perforations and their size and the volume of the cavity being adapted to the requested property of absorption of sound of a certain range of frequency.
REFERENCES:
patent: 1305828 (1919-06-01), Miller
patent: 3798393 (1974-03-01), Gorike
Ohlsson Ingemar
Wolf Sten J. L.
LandOfFree
Ear-cap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ear-cap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ear-cap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1599163