NOVELTY - The roller (30) has a slip assembly (60) that is coupled to an elongated tube (32). The slip assembly has a drive shaft (70) that comprises an elongated shaft. The elongated shaft includes a first anti-rotation key. A heat sink interface (120) is provided between the elongated tube and the driveshaft. The interface and drive shaft selectively rotate relative to each other. A thrust washer (100) is located between drive shaft and heat sink interface. A compliance device (90) is located between the thrust washer and the drive shaft.    USE - Roller for roller bed conveyor system such as accumulator conveyor system used in variety of manufacturing, distribution and warehouse facilities such as beverage distribution facility with multitude of individual beverage product such as cases of cans, bottles, or even totes of two liters.    ADVANTAGE - The accumulator roller bed conveyor system provides a cost-effective, efficient, and reliable system for providing a slippable roller that easily and efficiently transfers drive from drive mechanisms. The conveyor system provides a cost efficient, easily replaceable slip system that allows the drive system, such as the power roller to operate continuously with the gate solely deciding when to release loads to avoid the extra power of startup operation from a stopped position, which reduces wear on the power roller. The roller provides a unique and simple clutch or slip assembly within a roller tube that provides a very light rotational torque before slipping and thus, allowing accumulation of loads over long segments of accumulator conveyors. Both consistency and controlled variation is allowed, such that the applied forward force to a particular load is known and prevents damage to the load and the system.    DESCRIPTION OF DRAWING(S) - The drawing shows a partial cross sectional view of the roller including the slip assembly.    Roller (30)    Elongated tube (32)    Slip assembly (60)    Drive shaft (70)    Compliance device (90)    Thrust washer (100)    Heat sink interface (120)