Ear coupler

Details Ear coupler Ear coupler

1975-12-22

1977-10-25

Franklin, Lawrence R.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

128152, 179182R, A61B 702

Patent

active

040552330

ABSTRACT:
A self-forming ear plug element for use with a stethoscope type sound tube installation for transmitting audio sound to the ear and rejecting ambient noise. A conical portion having a sound-transmitting orifice enters the ear. A thin radially extensive shallow-conical acoustic flange extends outwardly from the major diameter part of the conical portion. Being soft, the flange easily conforms to the concha portion of the ear to increase the sound pressure level of the transmitted signal and to greatly attenuate ambient noise. A mounting horn for attaching the plug element to a stethoscope tube extends axially beyond the flange.

REFERENCES:
patent: 2573438 (1951-10-01), Hathaway et al.
patent: 3415246 (1968-12-01), Hill
patent: 3800791 (1974-04-01), Visor
patent: 3935401 (1976-01-01), Shore et al.

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