US 12,143,767 B1
Earphone bidirectional pressure port
Don Campbell, Casselberry, FL (US)
Assigned to Magnatone Hearing Aid Corporation, Casselberry, FL (US)
Filed by Magnatone Hearing Aid Corporation, Casselberry, FL (US)
Filed on Jan. 23, 2024, as Appl. No. 18/420,261.
Int. Cl. H04R 1/28 (2006.01); H04R 1/10 (2006.01)
CPC H04R 1/2826 (2013.01) [H04R 1/1016 (2013.01); H04R 1/1075 (2013.01); H04R 2460/11 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An in-ear audio device, comprising:
first and second device ends, the first device end sized and shaped to be received in the ear canal of a user;
a speaker having front and back sides that produce sound pressure, and that are not in direct fluid communication;
a primary sound channel comprising a tube with an inner diameter, and having first and second primary sound channel ends, the first primary sound channel end in fluid communication with the speaker, and the second primary sound channel end having an opening at the first device end; and
a secondary sound channel comprising a tube with an inner diameter, and having first and second secondary sound channel ends, the first secondary sound channel end in fluid communication with the speaker, and the second secondary sound channel end having an opening at the first device end; and
an internal cavity in fluid communication with the speaker front side, the first primary sound channel end having an opening to the internal cavity, and the first secondary sound channel end having an opening to the internal cavity, wherein the first primary sound channel end and first secondary sound channel end are in fluid communication with the speaker through the internal cavity;
a bidirectional pressure channel having first and second pressure channel ends, the first pressure channel end having an opening to the speaker back side, and the second pressure channel end having an opening to the internal cavity;
wherein the speaker front and back sides are in indirect fluid communication through the pressure channel and internal cavity, and the sound pressure from the speaker front and back sides is combined in the internal cavity and delivered to the user's ear canal through the primary and secondary sound channels; and
wherein the primary and secondary sound channels have different configurations selected from the group consisting of: different inner diameters, lengths, shapes, and combinations thereof.