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:
Aug. 27, 2019
Filed:
Jun. 08, 2016
Applicant:
Dai-ichi Seiko Co., Ltd., Kyoto-shi, Kyoto, JP;
Inventors:
Assignee:
DAI-ICHI SEIKO CO., LTD., Kyoto-Shi, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 17/00 (2006.01); H04R 1/10 (2006.01); H04R 1/28 (2006.01);
U.S. Cl.
CPC ...
H04R 1/1016 (2013.01); H04R 1/1058 (2013.01); H04R 1/1075 (2013.01); H04R 1/288 (2013.01); H04R 17/00 (2013.01); H04R 2201/10 (2013.01); H04R 2460/11 (2013.01); H04R 2460/13 (2013.01);
Abstract
An earphone () is provided that includes a first vibration plate () for vibration by a first piezoelectric element () and a cylindrically-shaped casing () for transmission of the vibration of the first vibration plate () to ear canal cartilage. The first vibration plate () is disposed inside the casing (). The earphone () has a structure whereby an amount of sound leakage, which is due to transmission of the vibration of the first vibration plate () to the air, is low. The ear canal cartilage transmits sound to the eardrum of only one ear, thereby enabling localization of sound. The woofer () maintains sound pressure at low frequencies.