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:
Jun. 06, 1995
Filed:
Jan. 27, 1993
Applicant:
Inventors:
Mitsuo Sakamoto, Tokyo, JP;
Norihide Koshika, Tokyo, JP;
Isao Nishimura, Tokyo, JP;
Katsuyasu Sasaki, Tokyo, JP;
Satoshi Orui, Tokyo, JP;
Assignee:
Kajima Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04H / ; E02D / ; E04B / ;
U.S. Cl.
CPC ...
521671 ; 521672 ; 521676 ; 521677 ; 521678 ;
Abstract
A seismic vibration control device for structures which employs a combination of primary and secondary vibratable masses to attenuate the vibration of a structure. The primary vibratable mass is passive and is supported on the structure. One or more active secondary vibratable masses are supported on the primary mass. Control forces are selectively applied to the secondary masses to control the period of the primary mass in a manner which is most effective to attenuate the seismic vibration of the structure.