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. 26, 2019
Filed:
Aug. 08, 2016
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Kazuki Honda, Osaka, JP;
Takafumi Yuasa, Osaka, JP;
Akihisa Kawamura, Osaka, JP;
Toshiyuki Matsumura, Osaka, JP;
Shuji Saiki, Nara, JP;
Satoshi Takayama, Mie, JP;
Suemei Fukuhara, Osaka, JP;
Isao Kuramitsu, Osaka, JP;
Ippei Kiyama, Hyogo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/22 (2006.01); H04R 1/28 (2006.01); H04R 3/04 (2006.01); H04R 1/30 (2006.01);
U.S. Cl.
CPC ...
H04R 1/227 (2013.01); H04R 1/2826 (2013.01); H04R 3/04 (2013.01); H04R 1/30 (2013.01); H04R 2499/10 (2013.01);
Abstract
Provided is a loudspeaker device that can improve sound quality. The loudspeaker device includes: a loudspeaker housing; a first loudspeaker unit provided in a first wall of the loudspeaker housing; and an acoustic tube communicating an inside and an outside of the loudspeaker housing to each other. The acoustic tube has a predetermined length, and is accommodated in the loudspeaker housing and is helically shaped.