Patent ID: 9556609
Date: 2017-01-31
CPC Classifications: E04H

Claim:
1. A sliding seismic isolation device comprising: an upper shoe and a lower shoe, the upper and lower shoes each having a sliding surface with a curvature; and a columnar steel slider disposed between the upper and lower shoes, the slider having an upper surface and a lower surface that are in contact with the upper and lower shoes, respectively, and have curvatures, wherein each of the upper and lower surfaces of the slider has a double-woven fabric layer, each of the double-woven fabric layers comprising a first layer and a second layer, the first layer comprising polytetrafluoroethylene fibers and the second layer comprising fibers selected from the group consisting of: polyamide fibers, polyester fibers, para-amid fibers, meta-aramid fibers, polyethylene fibers, polypropylene fibers, glass fibers, carbon fibers, polyphenylenesulfide (FPS) fibers, liquid crystal polymer (LCF) fibers, polyimide fibers, polytheretherketone (PEEK) fibers, thermal bonding fibers, cotton and wool; wherein each of the first layers is arranged in contact with the sliding surfaces of the upper and lower shoes respectively, and each of the second layers is arranged in contact with the upper and lower surfaces of the slider respectively.