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:
Dec. 08, 2015
Filed:
Jun. 30, 2014
The Research Foundation for the State University of New York, Amherst, NY (US);
Taylor Devices, Inc., North Tonawanda, NY (US);
Apostolos A. Sarlis, Houston, TX (US);
Michael C. Constantinou, Amherst, NY (US);
David A. Lee, Santa Monica, CA (US);
Andrei M. Reinhorn, Williamsville, NY (US);
Douglas P. Taylor, N. Tonawanda, NY (US);
THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK, Amherst, NY (US);
TAYLOR DEVICES, INC., North Tonawanda, NY (US);
Abstract
Negative stiffness systems and methods for seismic protection of a structure is described. A system can include a negative stiffness device having a first linkage pivotably connected to an anchor frame at a first pivot point and pivotably connected the movement frame at a second pivot point. The negative stiffness device can include a spring having a first end operably coupled to the anchor frame and a second end operably coupled to a movement frame. In a rest state, the spring can be compressed to exert a preload force to the first linkage and the anchor frame and not displace the first linkage and the movement frame. In an engaged state, the spring can be configured to apply a force to the first linkage such that the movement frame is displaced in a same lateral direction of a seismic load. The spring force can be amplified by the first linkage.