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:
Mar. 06, 2018
Filed:
Jul. 13, 2016
Koji Otsuka, Tokyo, JP;
Yumi Shimazaki, Tokyo, JP;
Kozo Ando, Kanagawa, JP;
KABUSHIKI KAISHA AUDIO-TECHNICA, Tokyo, JP;
Abstract
A noise-cancelling headphone is provided that prevents degradation in the sound quality of the sound output from the driver unit caused by the sounds leaking through the vent hole for adjusting the sound quality. The noise-cancelling headphone includes a housing unit having an interior and an exterior, a driver unit attached to the housing unit, and a microphone collecting sound at the exterior of the housing unit. The housing unit includes an accommodating portion accommodating the microphone and a vent hole establishing communication between an air chamber behind the driver unit and the exterior of the housing unit. The housing unit is constructed such that emitted sounds from the vent hole are prevented from being collected by the microphone.