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:
Nov. 19, 1991
Filed:
Feb. 05, 1990
Takuji Kobori, Tokyo, JP;
Motoichi Takahashi, Tokyo, JP;
Tadashi Nasu, Tokyo, JP;
Naoki Niwa, Tokyo, JP;
Narito Kurata, Tokyo, JP;
Junichi Hirai, Tokyo, JP;
Yoshinori Adachi, Tokyo, JP;
Kajima Corporation, Tokyo, JP;
Abstract
An active seismic response control system includes a variable damping device provided between posts, beams and braces of a structure, wherein the response of the frame is reduced by controlling the variable damping device when an earthquake or strong wind occurs to give a damping force to the frame. The response of the structure is determined by the steps of judging with a computer the optimal damping force or control force to be applied to the structure on the basis of information obtained from sensors in response to the disturbance, and then controlling the coefficient of damping of the variable damping device.