US 12,452,582 B2
Integrated barometric vent
Marco Baratelli, San Francisco, CA (US); Justin D. Crosby, Cupertino, CA (US); and Thomas H. Tsang, Sunnyvale, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 2, 2023, as Appl. No. 18/142,032.
Claims priority of provisional application 63/356,971, filed on Jun. 29, 2022.
Prior Publication US 2024/0007782 A1, Jan. 4, 2024
Int. Cl. H04R 3/00 (2006.01); H04R 1/02 (2006.01); H04R 1/28 (2006.01); H04R 7/10 (2006.01); H04R 7/18 (2006.01); H04R 9/06 (2006.01); H04R 19/04 (2006.01)
CPC H04R 1/2811 (2013.01) [H04R 1/025 (2013.01); H04R 3/00 (2013.01); H04R 7/10 (2013.01); H04R 7/18 (2013.01); H04R 9/06 (2013.01); H04R 19/04 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An acoustic transducer, comprising:
a diaphragm composed of at least a first lamina and a second lamina, and the diaphragm includes a front surface and includes a back surface formed at least in part by the first lamina, and wherein the second lamina is a gas-permeable membrane;
a front volume adjacent to the front surface;
a back volume adjacent to the back surface; and
a first plurality of apertures in the first lamina, each aperture exposing, to the back volume, a corresponding portion of an inner surface of the second lamina, the inner surface extending over the first plurality of openings.