Patent ID: 6991297
Filing Date: 2006-01-31
Classification: B60B,Y02T

Abstract:
1. A light-alloy wheel for automobiles or two-wheeled vehicles comprising: a hollow-cylindrical rim, said rim having a thickness and being disposed about a center axis, said rim having outer and inner rim portions integrally formed with each other; said outer rim portion having a bead seat, said inner rim portion having a well part and an annular stepped portion, said outer rim portion being connected with said well part of said inner rim portion through said annular stepped portion; a center disk built-up with the integral rim, said center disk having an annular fringe, said annular fringe adapted for seating on said annular stepped portion of said inner rim and covering said annular stepped portion of said inner rim; a plurality of fastener bolts, said fastener bolts each having a portion being nearby said well part, said fastener bolts each having a length, said fastener bolts fastening said inner rim to said center disk, said length of said fastener bolts extending substantially parallel with nearby portion of said well part; and a plurality of thick-wall portions, said thick-wall portions each having a thickness, a length, and a fringe, said thick-wall portions bulging from and integrally formed with said stepped portion of said inner rim, said thick wall portions bulging toward said rim center, said thick-wall portions each forming a screw hole for each of said fastener bolts, said thick wall portions being disposed along said annular stepped portion of said inner rim and extending along said length of said fastener bolts; said rim thickness being substantially constant, said substantially constant thickness extending from said bead seat on said outer rim portion through said well part of said inner rim portion, said thickness of said thick-walled portions differing from said thickness of said rim; and a surface of each of said thick-wall portions being smoothly continuous with a surface of said the well part along said fringe of said thick-wall portions.