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. 04, 2001
Filed:
Nov. 24, 1999
Harold L. Stiles, Vallejo, CA (US);
Knud B. Pedersen, Livermore, CA (US);
Shyam N. Shukla, Fremont, CA (US);
Ever-Level Foundation Systems, Inc., San Rafael, CA (US);
Abstract
A seismic isolation system with a plurality of ball-and-socket joints attaching a base structure to a plurality of foundation pads or piers. A plurality of pads or piers,form a foundation structure. A seismic isolation bearing,attaches a pad to the floor,of a building or other structure. The seismic isolation bearing includes a joint,attached to an elastic element,. The seismic isolation bearing allows tilting of the pad in relation to the base structure in response to vertical movement of a foundation pad. Additionally, rotation of the joint works in conjunction with the elastic element to reduce the shear deformation in the elastic element in response to transverse movement of the foundation pad.