Patent ID: 8167338
Filing Date: 2012-05-01
Classification: B29C,F16L,G02B,H02G

Abstract:
1. A non-metallic raceway configured to facilitate passage of a conductor comprising: at least one pair of non-metallic hollow conduits, including a first non-metallic conduit and a second non-metallic conduit, the first and second non-metallic hollow conduits each having: a first belled end portion having belled inner and outer surfaces, the first belled end portion having a first inner diameter at an end thereof, a second belled end portion having belled inner and outer surfaces, the second belled end portion having the first inner diameter at an end thereof, and a cylindrical portion between the first and second belled end portions and with a second inner diameter, the first inner diameter being greater than the second inner diameter, the pair of non-metallic hollow conduits being fused together at respective ends of the first belled end portions to form a fused portion, the fused portion including an internal ridge and an external ridge, and the internal ridge having a third inner diameter, the pair of fused together conduits having uncovered outer surface portions of the cylindrical portions and an entire outer surface of the fused portion that is uncovered, the third inner diameter being greater than the second inner diameter and less than the first inner diameter, and the first, second, and third inner diameters being sized such that a conductor passed through the raceway does not contact the internal ridge, wherein the internal ridge extends inwardly more than the external ridge extends outwardly.