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. 21, 2017
Filed:
Nov. 11, 2014
Delta Tooling Co., Ltd., Hiroshima-shi, JP;
Etsunori Fujita, Higashihiroshima, JP;
Yumi Ogura, Higashihiroshima, JP;
Seiji Kawasaki, Higashihiroshima, JP;
Shinichiro Maeda, Hatsukaichi, JP;
Kosuke Aoi, Hiroshima, JP;
Tatsuya Motoie, Aki-gun, JP;
DELTA TOOLING CO., LTD., Hiroshima-shi, JP;
Abstract
To enable an output sound of a speaker unit to be output as a surface sound source in a limited space. A three-dimensional knitted fabric is provided at a position substantially facing speaker units while being given tension in a surface direction. Since the tension is applied, a pair of ground knitted fabrics constituting the three-dimensional knitted fabric and a connecting yarn extending back and forth between the ground knitted fabrics vibrate due to their elastic action. In particular, string vibration is generated in the connecting yarn. Due to this vibration, output sounds of the speaker units are propagated in the surface direction of the three-dimensional knitted fabric, and as a result, the three-dimensional knitted fabric propagates and radiates acoustic waves of a surface sound source.