The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2025
Filed:
Dec. 11, 2023
Knowles Electronics, Llc, Itasca, IL (US);
Charles B. King, Oak Park, IL (US);
Thomas E. Miller, Arlington Heights, IL (US);
Mohammad Mohammadi, Rolling Meadows, IL (US);
Knowles Electronics, LLC, Itasca, IL (US);
Abstract
A micro-speaker for use in hearing and other body worn devices is disclosed, including an acoustic conduit defining an acoustic path between first and second air spaces. A first acoustic transducer is located between the acoustic conduit and the first air space and a second acoustic transducer located between the acoustic conduit and the second air space. The second acoustic transducer is operable to more or less obstruct an acoustic aperture between the acoustic conduit and the second air space, wherein concurrent operation of the first and second acoustic transducers generates an acoustic audio signal that propagates between the first and second air spaces. An acoustic vent between the acoustic conduit and the second air space has an acoustic impedance that is independent of the operation of the second acoustic transducer.