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:
Jan. 21, 2025
Filed:
Aug. 18, 2021
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Jacob A. Pfitsch, San Francisco, CA (US);
Onur I. Ilkorur, Campbell, CA (US);
Esge B. Andersen, Campbell, CA (US);
Miikka O. Tikander, Helsinki, FI;
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/10 (2006.01); H04R 1/28 (2006.01);
U.S. Cl.
CPC ...
H04R 1/1008 (2013.01); H04R 1/1091 (2013.01); H04R 1/2823 (2013.01);
Abstract
A headphone comprising: two headphone earcups each comprising: an earcup housing defining an active chamber that acoustically couples a sound output side of a speaker to an ear of a user, and an inactive chamber that surrounds the active chamber; and a passive valve assembly configured to open in response to a positive pressure and a negative pressure within the active chamber to fluidly couple the active chamber to the inactive chamber and equalize a pressure between the active chamber and the inactive chamber.