Patent ID: 6966734

Claim:
A track comprising a unitary elongated body having a longitudinal axis, said body having a raised center section extending along said longitudinal axis from one end to another end, said center section having a flat base with downwardly tapering sides terminating in laterally outwardly extending flanges extending parallel to and spaced from said longitudinal axis from one end of said body to another end, the flat base of said raised center section having a plurality of longitudinally spaced apart slots extending lengthwise along said longitudinal axis, each slot having a pair of longitudinally extending first side walls which are spaced laterally apart, said first side walls of each slot being connected by first and second parallel end walls, an entrance opening of arcuate configuration enlarging said slot between said first and second parallel end walls, and a slot extension intersecting said second end wall and extending lengthwise along said longitudinal axis, said slot extension having a pair of parallel longitudinally extending second side walls terminating in a third end wall which is spaced from said first and second end walls.