Patent ID: 6729006
Filing Date: 2004-05-04
Classification: B60C,Y10T

Abstract:
A process for demounting an assembly formed of a tire P, having a first bead Bo and a second bead BI, said beads each having a heel and a toe and a bead seat extending therebetween, and a tread-bearing support S which is internal thereto, from a wheel having an integral mounting rim J, having a first rim seat and a second rim seat, said two rim seats being inclined towards the outside, and the first rim seat being extended axially to the outside by a first outer rim edge of low radial height hs and being joined axially to the inside to a bearing surface for the tread-bearing support S, comprising the steps of:(a) pivoting the first bead Bo on its seat around its heel, by rolling at least one rotary roller G bearing on said bead Bo, so as to create a radial gap between at least the toe of said first bead seat and the first rim seat; (b) lubricating at least the toe of said first bead seat in the gap thus created; (c) introducing into said gap radially between the first bead seat and the first rim seat a demounting insert I in the form of a portion of a circular ring of triangular meridian section, said triangular section extending axially along the first rim seat from an apex at its axially inner end to a radial height h at its axially outer end at least equal to the radial height hs of the outside projection of the first outer rim edge; and (d) ejecting the first bead Bo and the assembly formed of the tire P and the tread-bearing support S from the mounting rim J over said first outer rim edge by use of the insert I.