Patent ID: 8182910
Filing Date: 2012-05-22
Classification: A47B,B32B,F16F,Y10T

Abstract:
1. A combination of a gravestone and a tip-resistant sheet, for preventing the gravestone from falling down due to an earthquake, wherein the tip resistant sheet includes an elastic material and one or more kinds of spherical bodies embedded in the elastic material, the spherical bodies being formed of materials that are harder to distort than the elastic material but that can be distorted by a load from the gravestone when the vibrating energy of an earthquake is applied to the spherical bodies, wherein the tip resistant sheet has a thickness ranging between 1.0 to 50 mm and wherein each spherical body is formed of a material selected from the group consisting of a metal, a linear polymer, a plastic with a cross linked structure, and a rubber having a higher vulcanization than the elastic material, and wherein the metal includes tins, lead-free solders, solders, leads, or brasses, the linear polymer includes polyethylene, polypropylene or polyester, and the plastic is melamine resin or epoxy resin.