The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2009
Filed:
Dec. 06, 2005
Takahisa Shizuku, Kodaira, JP;
Masami Kikuchi, Kodaira, JP;
Katsuhiro Kobayashi, Kodaira, JP;
Yoshikatsu Sakai, Kodaira, JP;
Wataru Seki, Kodaira, JP;
Takashi Yokoi, Kodaira, JP;
Takahisa Shizuku, Kodaira, JP;
Masami Kikuchi, Kodaira, JP;
Katsuhiro Kobayashi, Kodaira, JP;
Yoshikatsu Sakai, Kodaira, JP;
Wataru Seki, Kodaira, JP;
Takashi Yokoi, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
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.