Patent ID: 6748623
Filing Date: 2004-06-15
Classification: B60B,Y10T

Abstract:
A chair caster comprising:a wheel holder having a spindle hole disposed at an upper portion thereof and a through hole disposed therein in a transversal direction; a spindle having one end extending into said spindle hole of said wheel holder and the other end protruding upwards; a wheel axle capable of extending through said through hole of said wheel holder and having two ends respectively protruding outwardly out of both sides of said wheel holder, and a ring groove disposed proximate to each said end; two wheel bodies; each wheel body being capable of being rotatably connected a respective one of said both sides of said wheel holder, two axle housings; each axle housing being respectively disposed at a center of a respective one of two opposite inner sides of said two wheel bodies, each axle housing being formed with a respective axle hole; and each provided with a circumferential ridge disposed therein for being engaged with said ring groove of each said end of said wheel axle; and, characterized by said two wheel bodies each having a recessed chamber and a shake-proof washer, wherein said recessed chamber is disposed in said inner side of each said wheel body so that a circumferential wall being thinner than the recess chamber is formed between said recessed chamber and an outer wall surface of each said wheel body; said shake-proof washer made of a rubber material is capable of being fitted in said recessed chamber.