US 12,143,770 B2
Acoustic receivers with multiple diaphragms
Shehab Albahri, Hanover Park, IL (US); Yahui Zhang, Schaumburg, IL (US); Kalyan Nadella, Chicago, IL (US); Thomas Miller, Arlington Heights, IL (US); Christopher Monti, Elgin, IL (US); Charles King, Oak Park, IL (US); and Jose Salazar, Chicago, IL (US)
Assigned to KNOWLES ELECTRONICS, LLC, Itasca, IL (US)
Filed by KNOWLES ELECTRONICS, LLC, Itasca, IL (US)
Filed on Oct. 31, 2023, as Appl. No. 18/498,295.
Application 18/498,295 is a continuation of application No. 18/056,582, filed on Nov. 17, 2022, granted, now 11,832,054.
Application 18/056,582 is a continuation of application No. 17/583,813, filed on Jan. 25, 2022, granted, now 11,570,551, issued on Jan. 31, 2023.
Application 17/583,813 is a continuation of application No. 17/134,307, filed on Dec. 26, 2020, granted, now 11,272,294, issued on Mar. 8, 2022.
Claims priority of provisional application 62/955,318, filed on Dec. 30, 2019.
Prior Publication US 2024/0064471 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 11/02 (2006.01); H04R 1/10 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01)
CPC H04R 11/02 (2013.01) [H04R 1/10 (2013.01); H04R 9/027 (2013.01); H04R 9/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A balanced armature receiver comprising:
a housing having a first internal volume, a second internal volume, and a third internal volume;
a first diaphragm separating the first internal volume into a first front volume and a first back volume, the first front volume having a first sound outlet port;
a second diaphragm separating the second internal volume into a second front volume and a second back volume, the second front volume having a second sound outlet port;
a third diaphragm separating the third internal volume into a third front volume and a third back volume, the third front volume having a third sound outlet port;
a first wall portion separating the first front volume from the second back volume;
a second wall portion separating the second front volume from the third back volume;
a motor disposed at least partially inside the housing, the motor including an armature mechanically coupled to the first diaphragm, the second diaphragm, and the third diaphragm; and
a first acoustic seal located at least partially in an opening of the first wall portion between the first front volume and the second back volume, the first acoustic seal accommodating a first link coupling the armature to the first diaphragm;
a second acoustic seal between the second front volume and the third back volume, the second acoustic seal accommodating a second link coupling the armature to the third diaphragm.