Tokyo Keiki Company Limited

Isao Takiguchi

Hiroshi Ota

Ryohei Motegi

Yukio Yoshida

Yoichi Hirokawa

Hiroshi Kono

Takehiko Suyama

Junichi Furuki

Satohiko Tanaka

Narimasa Yamabe

Yoshimitsu Hashimoto

Tomohiro Gocho

Noboru Sakuma

Tetsuya Ishii

Takeki Takarabe

An access alarming method and apparatus for activating an alarm in the event of the access of a working vehicle, such as a road roller, to an object, such as a worker, in the same working area as the vehicle. An ultrasonic wave transmitted by a transmitter on the object is received by a receiver on the vehicle. The received signal is processed and used to determine the relative position of the vehicle with respect to the object. An alarm is activated, and/or the vehicle is braked when it is judged that the object is within a hazard area determined in relation to the position and course of the vehicle.

Access alarming method and apparatus for working vehicle

A lightweight mixed dielectric and a manufacturing method thereof is described, which is prepared by mixing metal-coated expanded particles of plastic, glass or silica, thin-wall metal pipes or metal coated thin-wall plastic pipes and uncoated expanded particles of plastic, glass or silica and then forming the resulting mixture into a desired shape by thermal expansion or by the use of binder with the provision that these uncoated expanded particles are only made of plastic when the forming step is carried out by thermal expansion.

Lightweight materials having a high dielectric constant and their method

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Tokyo, Japan

Isao Takiguchi