Abstract: A load supporting conveyor having live rollers forming a load conveying path in which the rollers are driven by a chain having horizontally placed links and vertically positioned rollers with vertical axles that project upwardly toward the live rollers to be engaged by a flexible pad substantially aligned with the drive chain and an aperture pattern formed in the pad to establish a series of apertures that have a tight fit with certain ones of the vertical axle projections and a series of other apertures that have a loose fit with a like series of vertical axle projections.

Abstract: An endless flexible apron or carrier assembly includes a pair of parallel spaced endless drive chains connected by longitudinally spaced parallel cross tubes which slidably support a series of package transfer pushers. The drive chains are supported by parallel spaced elongated side frame members which also support one or more sets of modular crossover sender, receiver and switch units. The side frames have longitudinally spaced sets of holes for conveniently positioning the sets of units at longitudinally selectable locations. Each pusher has a load carrying roller and a smaller guide roller which engages long wearing guide surfaces on repositioning blocks and on the sender and receiver units, and the guide rollers also engage a multiple step divider block on the sender unit.