Bridgestone Corporation

Wataru Seki

Tatsuya Suzuki

Daisuke Kondo

Takahisa Shizuku

Katsuhiro Kobayashi

Hiroshi Shima

Yoshihide Fukahori

Masami Kikuchi

Takashi Yokoi

Akihiko Ogino

Yoshikatsu Sakai

Shigenobu Suzuki

Toshikazu Yoshizawa

Mitsuaki Maeda

Yukio Aoike

Takeshi Suga

Nobuyoshi Yamato

Akira Miyawaki

Kazuhiro Shiraki

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

There is provided an anti-seismic rubber bearing made up of a laminate structure formed by bonding a plurality of rigid plates having stiffness properties and a plurality of flexible plates having viscoelastic properties each other alternately, and flanges each attached to the upper and lower surfaces of the laminate structure, characterized by that the local strain is evenly distributed throughout the structure by lowering the local strain which occurs near the flanges.

Anti-seismic rubber bearing

Growing community of inventors

Kodaira, Japan

Wataru Seki