Patent ID: 6913324
Filing Date: 2005-07-05
Classification: B60B

Abstract:
1. A method for constructing a wheel, comprising: a) blow molding a plastic wheel having a body bore, first and second side walls that project toward the body bore, and a plurality of seamless, hollow cavities that communicate with each other; b) extracting the wheel from a mold; c) fitting an assembly to the body bore, wherein the assembly includes an axle bore, a retainer member that communicates with the axle bore and resilient means for biasing the retainer member for reciprocating movement into the axle bore, and wherein the retainer member is displaced from a tread surface that lies parallel to the axle bore; and d) stretch mounting a separately molded annular tread piece to the wheel, and wherein the tread piece has a channel shape with first and second side pieces that project from a connecting tread band, and such that the tread band overlies the tread surface and the first and second side pieces abut the first and second side walls.