In-the-ear hearing aid

Details In-the-ear hearing aid In-the-ear hearing aid

1987-05-01

1988-01-05

Fuller, B. R.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181135, 381 686, 381 69, H04R 2502

Patent

active

047169850

ABSTRACT:
The housing of the hearing aid comprises a distal, bead-like head part having a planar face on which an arched face plate is seated and comprises a proximal, thinner tail part. The angle .alpha. between the normal of the planar face and the longitudinal axis of the tail part lies in the range of 135.degree. through 142.degree., preferably at 140.degree., in a first longitudinal plane through the housing and a corresponding angle .beta. in a second, perpendicular longitudinal plane through the housing lies in the range from 12.degree. through 17.degree., preferably at 14.degree..

REFERENCES:
patent: 3448224 (1969-06-01), Giller
patent: 3975599 (1976-08-01), Johanson
patent: 4532649 (1985-07-01), Bellafiore
patent: 4548082 (1985-10-01), Engebreston et al.
"Anthropometric Manikin for Acoustic Research", M. D. Burkhard and R. M. Sachs, J. P. Acoust. SOC. AM. vol. 58, No. 1 7/75, pp. 214-222.
"Die Richtcharakteristik des Ohres, Von W. Schirmer, Mitteilung aus dem Institut fur Elektro. und Bauakustik der Technischen Universitat Dresden, 27, Nov. 1961, pp. 39-48.

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