Bridgestone Corporation

Katsuhiro Kobayashi

Yasuhiro Suzuki

Takahisa Shizuku

Wataru Seki

Hiroshi Shima

Masami Kikuchi

Takashi Yokoi

Kazutomo Murakami

Yoshikatsu Sakai

Hirokazu Watai

Yukio Aoike

Hironori Adachi

Masanori Ooishi

A seismic isolation apparatus features damping characteristics equivalent to or better than prior art, without burdening the environment. In this seismic isolation apparatus, a cylindrical cavity portion is formed at the middle of an outer side laminated body, which has a form in which respective pluralities of resiliently deformable rubber rings and metal rings for maintaining rigidity are alternately laminated. A helically formed coil spring is disposed in this cavity portion so as to be snugly fitted. An inner side laminated body, which has a form in which respective pluralities of resiliently deformable rubber plates and metal plates for maintaining rigidity are alternately laminated, is disposed at an inner peripheral side of the coil spring.

Seismic isolation apparatus

There is provided an apparatus for measuring forces acted upon a tire in which a radial force and a peripheral force acting to the tire, which are required for the high precision measurement of a friction coefficient on a road surface, are simply measured in a high precision by detecting a magnetic field formed by a magnet fixed to a tread portion of the tire by a magnetic sensor fixed to a rim and measuring the forces acting to the tire from a variant pattern of a magnetic flux density detected un the rotation of the tire and without influencing upon the balance of the tire, which contributes to the high precision measurement of the friction coefficient on the road surface.

Method for measuring forces acted upon tire and apparatus for measuring forces acted upon tire

Growing community of inventors

Kodaira, Japan

Katsuhiro Kobayashi