Patent ID: 7654510

Claim:
An anti-slip device provided with a supporting plate of metal or resin, having an outer periphery, on which an attachment portion to another member is threaded and protruding from a reverse face, the reverse face having a notched portion at the outer periphery of the supporting plate, and a rubber elastic body mounted unitedly to the supporting plate comprising a construction in which the rubber elastic body is composed of a receiving piece portion covering approximately whole of an obverse face of the supporting plate and a falling-prevention portion to connect the reverse face to the receiving piece portion as to embrace a peripheral portion, the falling-prevention portion connected to the receiving piece portion and the periphery of the supporting plate, with a lower face of the falling-prevention portion disposed on the same plane as the lowest face of the reverse face of the supporting plate, and a concave portion for fastening is formed on the obverse face of the supporting plate to screw the threaded attachment portion into the other member.