R 408.11407 Definitions; R to V.

Rule 1407. (1) "Rollback" means an uncontrolled run of a conveyor down an inclined slope opposite to the direction of intended travel. (2) "Roller conveyor" means a series of rollers supported in a frame over which packages or objects are moved manually, by gravity or by power. See figure 8. (3) "Runaway" means an uncontrolled run of a conveyor on a declined slope in the direction of intended travel. (4) "Safety factor" means the ratio of the breaking strength of a piece of material or object to the maximum designed load or stress applied when in use. (5) "Safety limit switch" means a final device used to disconnect power to a conveyor in case of control or operator failure. (6) "Slat conveyor" means 1 or more endless chains to which non-overlapping, non- interlocking, spaced slats are attached to form a moving support for packages or objects being conveyed. See figure 9. (7) "Suspended tray conveyor" means pendant trays or carriers attached to 1 or more endless chains which receive and deliver packages or objects at 1 or more locations. See figure 10. (8) "Vertical reciprocating conveyor" means a conveyor with power or counterbalanced gravity actuated carriers which receive and discharge material to other elevations.