Patent ID: 6595434
Filing Date: 2003-07-22
Classification: E01B

Abstract:
A track bound transport system comprising:a sleeper having a pair of holes; a rail including a pair of rail feet, each having an upper surface and an upper edge; a sole plate including a pair of rail foot holding flanges, each having an upper edge, a pair of spike receiving portions extending from a bottom surface of the plate and into said holes, and raised portions on top of the plate; wherein, each said raised portion has a flat upper surface that is aligned with the upper edges of one of the rail feet and one of the holding flanges so as to establish a generally smooth surface transition between the upper surfaces of the raised portion and the rail foot; at least one fastening bolt having a bolt head, and a body extending through one of the raised portions and into one of the spike receiving portions; a coil spring having a central passageway receiving said bolt, and said coil spring being maintained under compression by said bolt head; wherein, said raised portion, said fastening bolt, and said coil spring are adapted for cooperating with a flange, which is adapted to be forced by said coil spring to a clamping position on one of said rail feet; and said raised portion, fastening bolt and coil spring are configured to allow said flange to be selectively pivoted into and out of said clamping position smoothly along the upper surfaces of the rail foot and the raised portion.