Mitsubishi Gas Chemical Company, Inc.

Sony Corporation

Sanyo Denki Co., Ltd.

Eiwa Chemical Ind. Co., Ltd.

Haruka Sakai

Kazuyoshi Uera

Tomoki Iwata

Takahisa Tagami

Emiko Ikeda

Haruhisa Maruyama

Jiro Watanabe

Hiroshi Iwasaki

Toshiya Nishizawa

Yoshinori Miyabara

Takuya Kageyama

Naoya Kunikata

Kei Satou

Kazuya Nakata

Mitsuru Kasuga

Masafumi Yokota

Yuji Yasuda

A vibration system includes a vibration plate and an edge portion disposed around the vibration plate. The vibration plate has a first region and a second region that have shapes asymmetrical with each other. The vibration plate is configured such that a weight difference between the first region and the second region is equal to or smaller than a threshold value and besides stiffness at the edge portion is substantially uniform.

Vibration system, speaker apparatus and video displaying apparatus

A speaker apparatus includes: a magnetic circuit including an annularly formed magnet, a yoke that includes a base surface part and a center pole part protruding from the base surface part, the center pole part being disposed while being inserted into a central part of the magnet, and a plate that is annularly formed and disposed on an outer peripheral side of the center pole part of the yoke while being attached to the magnet; a coil bobbin that is cylindrically formed and is displaceable in an axial direction of the center pole part while a part thereof is fitted onto the center pole part of the yoke; a voice coil that is wound around an outer peripheral surface of the coil bobbin, at least a part thereof being disposed in a magnetic gap formed between the plate and the center pole part of the yoke; and a diaphragm that is connected to the coil bobbin and is caused to vibrate in conjunction with displacement of the coil bobbin, in which a first air passage path and a second air passage path are formed, the first air passage path leading from a back surface side of the diaphragm to a lower surface of the magnetic circuit, the second air passage path being formed in the lower surface of the magnetic circuit and connecting the first air passage path and a side of the magnetic circuit.

Speaker diaphragm and speaker apparatus

The gas generating agent of the present invention comprises an oxalic acid salt of an aminoguanidine compound represented by general formula (1) below. 

Gas generating agent, and method for producing foam using the same

Provided is a modified rubber for a tire (A) obtained by modifying a natural rubber and/or a synthetic rubber with a compound represented by formula (1): wherein X is an acid to form a salt with a guanidine site.

Modified rubber for tire, rubber composition for tire using the same, and tire

A housing of a fan motor according to the invention includes: board members provided at an interval in a rotational axis direction of a fan; a coupling portion which couples the board members to each other; a protrusion portion which is protruded toward a space other than an air course from the coupling portion, the space being between the board members other than the air courses; and a fixing portion which fixes a terminal that is provided in the protrusion portion and is connected to a wiring from a power source that supplies electricity to a motor. Other member, which crosses in an extending direction of the terminal from the protrusion portion to an edge portion of the board member, is not provided.

Housing of fan motor

Provided is a compound represented by formula (1): wherein X is an acid to form a salt with a guanidine site; and Rand Rare each independently any selected from the group consisting of a hydrogen atom, a Calkyl group, a cycloalkyl group, an aryl group, an alkylaryl group, and an alkenyl group, each of the groups optionally having one or more substituents each containing a sulfur atom, a nitrogen atom, or an oxygen atom.

Alkylidene aminoguanidine and salt thereof, modifying composition, modified rubber for tire, rubber composition for tire, and tire

A brushless motor includes a stator as an armature where a plurality of coils is housed and a rotor as a magnetic exciter having a permanent magnet, wherein an end portion of the coil housed in a slot of a stator stack is inserted into a wire binding board having a wire binding pattern of the coil, the end portion of the coil is soldered to a land of the wire binding board, and the wire binding board and a circuit board are electrically conducted to each other through an connecting terminal.

Brushless motor

Growing community of inventors

Tokyo, Japan

Haruka Sakai