Patent ID: 7472518
Filing Date: 2009-01-06
Classification: E04H,F16F

Abstract:
1. An anti-shock device comprising at least two sliding members mounted in at least two layers, each sliding member comprising a slotted seat, an inner seat, and at least one rolling shaft, wherein the slotted seat has a top face, a bottom face, a slot longitudinally defined in one of the top face and the bottom face and having an opening, at least one outer curved rail defined in a sidewall next to the slot curving toward the opening of the slot; the inner seat is mounted slidably in the slot of the slotted seat and has at least one inner curved rail defined in the inner seat corresponding to the at least one outer curved rail and curving in an opposite direction away from the opening of the slot; and each one of the at least one rolling shaft is mounted through at least one of the at least one outer curved rail and at least one of the at least one inner curved rail.