Other

Pioneer Corporation

Tohoku Pioneer Corporation

Taizo Nakata

Etsunori Fujita

Yumi Ogura

Kazuyoshi Chizuka

Shigeyuki Kojima

Shigeki Wagata

Masaki Nishino

Kazuhiro Ueda

Hideaki Sugiura

Hiroki Ohshimo

Eiichi Koyama

Hidehiro Oda

Yoshiaki Nagae

Tetsuo Nishikawa

In a speaker devicehaving: a magnetic circuitincluding a magnetand a yokea voice coilwhich is placed in a magnetic gapof the magnetic circuitand a diaphragmwhich is vibrating available in a state where the diaphragm is coupled with the voice coila peripheral edge of the diaphragmbeing fixed to a housinga damper holderis disposed in a portion where a damperis attached to the housingThe damper holderis in point contact with the housingvia three or more projectionswhich are disposed on one of the damper holderand the housingPreferably, the damper holderis made of a hybrid material of a resin (polypropylene) and tungsten, and has a specific gravity of 10.0 or larger.

Speaker device

A seat or bed partly includes frames,and net-shaped skins,held by the frames,under tension, respectively. Each of the net-shaped skins,is made of an upper mesh layer,, a lower mesh layer,, and a pile layer having a large number of piles,that connect the upper and lower mesh layers,to each other. Each pile,is made of a single string.

Cushion and seat each having net-like skin

Growing community of inventors

Osaka, Japan

Taizo Nakata