Patent ID: 6189357
Filing Date: 2001-02-20
Classification: B21D

Abstract:
A mandrel for spin forming partial vehicle wheel rims, the mandrel comprising:a first portion having a first shape, said first shape including a cylindrical portion adapted to form a cylindrical end portion of a first partial wheel rim, said first portion adapted for spin forming a first portion of a metal hoop into a first partial wheel rim having a shape corresponding to said first shape of said first mandrel portion, said first partial wheel rim including a cylindrical end portion which is adapted for attachment to a first full face wheel disc, said full face wheel disc including an outboard tire bead retaining flange; anda second portion having a second shape, said second shape including a cylindrical portion adapted to form a cylindrical end portion of a second partial wheel rim, said second portion adapted for spin forming a second portion of said metal hoop into a second partial wheel rim having a shape corresponding to said second shape of said second mandrel portion, said second partial wheel rim including a cylindrical end portion which is adapted for attachment to a second full face wheel disc, said full face wheel disc including an outboard tire bead retaining flange, whereby two two-piece wheels can be formed from the two partial wheel rims formed upon the mandrel.