Kansai Matec Co., Ltd.

Hitachi Chemical Company, Ltd.

Panasonic Electric Works Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Hideki Nakamura

Koji Yoshino

Hiroaki Tanaka

Toshio Watanabe

Takashi Uno

Yoshiharu Oomori

Masafumi Sadahira

Daisuke Hosokawa

Masayuki Kubo

Hiroshi Wada

Yasuko Yamamoto

Kazunori Kidera

Kazuki Maeda

Yoshihiko Imai

Sosuke Naito

Akihito Iwai

Katsumi Matsumoto

Matsuki Yamamoto

Tadaharu Kitadou

Junji Ikeda

Yoshihiro Matsumura

Kazu Ohya

Toshikatsu Chida

Masayuki Mitsui

Chikako Hosokawa

A physical activity measuring system analyzes analyzing body motions of a user to accurately determine the exercise intensity. The system includes a portable device which is adapted to be carried by the user and is equipped with a body sensor and an indicator for indication of the exercise intensity. The body sensor senses the user's body motions to give corresponding motion strength. The portable device has a processor which constitutes an exercise calculator which has a predetermined relationship between a default standard deviation of the motion strength and an exercise intensity scale. The exercise intensity calculator collects a time series data of the motion strengths within a predetermined first time frame, obtains a standard deviation of thus collected motion strengths, and converting the standard deviation into an instant exercise intensity within the intensity scale in accordance with the predetermined relationship. The standard deviation with regard to the motion strengths can be well concordant with the exercise intensity, and therefore gives the accurate exercise intensity on a real-time basis.

Physical activity measuring system

An alumina-zirconia sintered body comprising 92 to 35% by weight of aluminum oxide and 8 to 65% by weight of zirconium oxide having mainly tetragonal system, and 0.2 to 5 parts by weight of silicon oxide per 100 parts by weight of the total of aluminum oxide and zirconium oxide, and having a relative density of 95% or more, has improved wear resistance and suitable for use in an impact grinder.

Alumina-zirconia sintered body, production thereof, and impact grinder

A first rotor disk (21) and a second rotor disk (22) having a plurality of crushing pins (30) mounted so as to form rows along the circumference are opposed to each other and rotatably supported within casings (14, 15). The first and second rotor disks (21, 22) are rotated to crush materials to be crushed which are charged into the casings (14, 15). The crushing pins (30) are mounted on the first and second rotor disks (21, 22) in a cantilever manner. Escape spaces are provided on the first and second rotor disks (21, 22) so as to face to the extreme ends of the crushing pins (30).

Pin mill type crusher

Growing community of inventors

Osaka, Japan

Hideki Nakamura