GENERAL STATEMENT OF CLASS SUBJECT MATTER
A power-driven conveyor is an assemblage of elements for movinga load over a predetermined path or path section. The assemblagegenerally includes a single frame structure mounting a power-drivenload-advancing means which is used to advance the load over the predeterminedpath.
The load-advancing means may comprise either a single load-advancingelement or a group of like members acting as a single load-advancingdevice. A group of like members may be considered as acting asa single unit if they coact one with the other to effect movementof the load, where said coaction occurs along the entire length ofsaid path or path section. Some other criteria which generallyindicate that a group of like members is acting as a single unitare: a common frame structure supporting all the members; or adrive means for all the members, with the elements being drivenat the same speed or over the same speed range. The above are merely certainparameters that most groups acting as a single unit exhibit. Aswith any rule or definition, there will be exceptions.
See the Glossary, below, for clarification and limitation ofthe concepts of the terms Chute and Condition Responsive, applyingto the manner in which they are encountered in this class (193).