Kyocera Corporation

Kawashima Textile Manufacturers Ltd.

Zenpei Tachibana

Masatoshi Ikeda

Hironori Inoue

Takafumi Turumaru

Kiyoshi Yonehana

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

A cutter for a double-pile loom which cutter is fixed to a slider to slide on a rail in parallel with the cloth fell. The cutter is adapted to reciprocate crosswise in the space between the top and bottom sheets of fabric synchronously with picking to cut the pile yarns which stitch together two sheets of fabric to form piles. The cutter edge is made of a single crystal sapphire and is highly resistant to wear having its cutting characteristics maintained for a long term. Grindstones are not needed to maintain a sharpness of the cutter.

Growing community of inventors

Kyoto, Japan

Zenpei Tachibana