Hearing aid to be worn behind the ear of the user and provided w

Details Hearing aid to be worn behind the ear of the user and provided w Hearing aid to be worn behind the ear of the user and provided w

1975-10-16

1977-08-09

Stellar, George G.

H04R 138, H04R 2500

Patent

active

040412512

ABSTRACT:
A hearing aid to be worn behind the ear and including a pressure-gradient microphone is designed so as to give a defined directional effect. The rear surface of the microphone communicates with the ambient atmosphere by way of an acoustic resistor comprising a block of sintered material. The overall transmission area of this block is less than one half of the effective area of the microphone diaphragm. The block preferably is detachably accommodated in a rubber mount and may comprise sintered bronze pellets or sintered silicon carbide.

REFERENCES:
patent: 2417153 (1947-03-01), Darr
patent: 2702318 (1955-02-01), Dvorsky
patent: 2938083 (1960-05-01), Herrmann
patent: 3053339 (1962-09-01), Kanesuke et al.
patent: 3439128 (1969-04-01), Sobel et al.
patent: 3662124 (1972-05-01), Hassler et al.
patent: 3749853 (1973-07-01), Ely et al.
patent: 3777079 (1973-12-01), Fischer et al.
patent: 3798390 (1974-03-01), Gage et al.
patent: 3876843 (1975-04-01), Moen
patent: 3895194 (1975-07-01), Fraim
patent: 3963881 (1976-06-01), Fraim et al.

Affiliated with

Also associated with

Rating

Hearing aid to be worn behind the ear of the user and provided w does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hearing aid to be worn behind the ear of the user and provided w, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hearing aid to be worn behind the ear of the user and provided w will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1229474