Patent ID: 6808063
Filing Date: 2004-10-26
Classification: B65G

Abstract:
A roller device comprising:a roller body having axially opposite first and second ends, a fixture accommodated at least in part in the roller body to be secured thereto to rotate as one piece with the roller body, at least one punched hook-engagement that is formed in and between an inner periphery of the roller body and an outer periphery of the fixture adjacent the first end of the roller body, and the punched hook-engagement being composed of the peripheries overlying one another that are brought into close contact with each other at least in part, wherein portions of said peripheries are struck inwardly and radially of the roller body so as to cause permanent and integral plastic deformation of said portions, the portion of the periphery of the roller body struck at a discrete location spaced axially from the first end of the roller body, wherein at least one cavity is preformed in the fixture and extends axially inwards a distance from an outer end face of the fixture so as to be located near the periphery thereof, wherein each of the plastically deformed portions constituting the punched hook-engagement projects partially or wholly into the at least one cavity.