Acoustical damping element and method of forming same

Details Acoustical damping element and method of forming same Acoustical damping element and method of forming same

1980-12-22

1982-09-14

Hix, L. T.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181196, H04R 2500, G10K 1102

Patent

active

043490824

ABSTRACT:
An acoustical damping element for acoustical tubing such as a hearing aid earpiece, in which a disc of wire screen is positioned over a disc of flexible fabric of a selected acoustic resistance, over the mouth of the tubing. An insertion tool of diameter slightly less than that of the interior passage of the tubing then pushes the composite layers of screen and fabric into the tubing, thereby forming the screen and fabric into closed end concentric cylinders in the passage. The cylindrical sidewall of the screen presses the cylindrical sidewall of the fabric against the interior wall of the tubing to retain the damping element within the passage.

REFERENCES:
patent: 953557 (1910-03-01), Shepard
patent: 3930560 (1976-01-01), Carlson et al.

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