Kyocera Corporation

Masatoshi Ikeda

Naruto Takahashi

Michiaki Nishimura

Kazumasa Maruya

Hironori Inoue

Takafumi Turumaru

Zenpei Tachibana

A fuel cell assembly has a housing defining an electricity generation/combustion chamber, and electricity generation/combustion means disposed within the housing. A fuel gas and an oxygen-containing gas are supplied to the electricity generation/combustion means, and a combustion gas formed within the electricity generation/combustion chamber is discharged from the electricity generation/combustion chamber. A heat exchanger having a first channel and a second channel is disposed on at least one surface of the housing, the combustion gas is discharged from the interior of the electricity generation/combustion chamber through the first channel of the heat exchanger, and one of the oxygen-containing gas and the fuel gas is supplied to the electricity generation/combustion means through the second channel of the heat exchanger. A plurality of electricity generation units are arranged in parallel within the housing, and each of the electricity generation units includes a cell stack constituting the electricity generation/combustion means.

Fuel cell assembly and electricity generation unit used in same

A rotor for an open-end spinning machine. A spinning portion of a bottomed cylindrical body has a hollow portion where twisted yarn is formed by a continuous twisting operation while gathering short fiber groups in the maximum diameter portion of the spinning chamber. A rotary shaft is joined to the spinning portion. The spinning portion is made of a silicon nitride sintered body which includes no less than 60% silicon nitride grain having an aspect ratio not less than 3, and an average grain size of from 0.1 to 10 .mu.m. The rotor is hardly damaged at a high speed rotation of 100,000 r.p.m. or more, and the yarn strength and the yarn quality are not reduced even after an extended use of the rotor for a long time.

Rotor for open-end spinning machine

Growing community of inventors

Kagoshima, Japan

Masatoshi Ikeda