Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1997-08-11
2000-05-30
Dang, Khanh
Acoustics
Anatomic or prosthetic relation
Ear and mouth
181129, 181130, 181135, 381372, 381382, 128864, 128865, 128866, 128867, 128868, 2209, A61B 702
Patent
active
060680792
ABSTRACT:
Acoustic valve capable of selective and non-linear filtering of sound and placeable in a perforated ear plug. The acoustic valve consists of a tube enclosing two rigid disks axially spaced opposite each other, each of the disks containing at least one perforation. The total perforated surface of at least one disk is between 0.03 and 0.5 mm.sup.2.
REFERENCES:
patent: 2465606 (1949-03-01), Reynolds
patent: 2487038 (1949-11-01), Baum
patent: 2619960 (1952-12-01), Reynolds
patent: 3451502 (1969-06-01), Branch et al.
patent: 3730181 (1973-05-01), Fling
Dancer Armand
Evrard Georges
Hamery Pascal
Dang Khanh
I.S.L. Institut Franco-Allemand de Recherches de Saint-Louis
LandOfFree
Acoustic valve capable of selective and non-linear filtering of does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic valve capable of selective and non-linear filtering of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic valve capable of selective and non-linear filtering of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1904056