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:
Aug. 10, 1999
Filed:
Feb. 26, 1998
Applicant:
Inventors:
Nobuyasu Kawai, Osaka, JP;
Kazuaki Shiki, Tokyo, JP;
Assignees:
Okumura Corporation, Osaka, JP;
Oiles Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04H / ;
U.S. Cl.
CPC ...
521675 ; 521671 ; 521676 ;
Abstract
A base isolator has four base isolation units placed at four corners between a floor slab and a floor plate. Each base isolation unit has a middle plate, a lower support body which is rotatable in a first direction on the lower side of the middle plate, and an upper support body rotatable in a second direction on the upper side of the middle plate. The upper support body and the lower support body each have mutually eccentric rollers. The middle plates of the four base isolation units are separated from one another so that the plates can be independently displaced or moved.