Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Cable Industries, Ltd.

Shinsei Corporation

Yoshimasa Tsukamoto

Isao Shirasu

Takeshi Satake

Takashi Akaba

Masayoshi Hachiwaka

Tadashi Nagashima

Toshiiku Sashida

Takeji Akutsu

Koichi Suzuki

Kyoichi Yoshioka

Tokuji Hayashi

Masakatsu Kimura

A small-sized ultrasonic motor can produce a high torque and a stable turning force. The ultrasonic motor has: a cylindrical casing, a hollow output shaft extending coaxially through the cylindrical casing supported rotatably by the casing a ring-like stator fixedly mounted on the inner surface of the cylindrical casing having piezoelectric elements fixed on the back surface thereof, a ring-like rotor mounted on the hollow output shaft and facing the front surface of the stator, and springs for pushing the rotor toward the stator. Also disclosed is a laser beam welding apparatus for welding the inner circumferential surface of a tube by using the ultrasonic motor.

Ultrasonic motor and laser beam welding apparatus using the same

The present invention provides an optical energy beam transmission path structure comprising at least one pair of optical fibers each having a connection end, and at least one fiber connector for connecting the connection ends of the paired fibers substantially coaxially. A small axial air gap is formed between the connection ends of the paired fibers, and an annular clearance is formed immediately around the connection end of the glass body of each fiber.

Optical energy beam transmission path structure

Growing community of inventors

Kobe, Japan

Yoshimasa Tsukamoto