Patent ID: 7207084

Claim:
A self-orienting caster, comprising; a support, provided with a vertical cylindrical recess open upward; a shaft that is driven horizontally through a seat of said support; at least one wheel, which is rotatably mounted on said shaft; a pivot inserted in said recess that is offset axially with respect to said shaft, for allowing pivoting of the caster, said pivot having a first portion tat is inserted in said recess and a second portion that is insertable in a seat of a piece of furniture on which the caster is to be fitted and an elastic ring, said second portion comprising an end stem that has a reduced diameter so as to farm a shoulder; a bush that is arranged about said stem and that is fixed axially on said stem and forms, together with said shoulder, an annular groove for accommodating, without axial play, said elastic ring that is adapted to press by expanding against an inner wall of the seat in which the caster is to be fitted, said stem being provided with a heading that forms an annular lip, said bush being fixed axially on said stem by way of said annular lip.