PULLEY ASSEMBLIES FOR USE IN MODULAR UTILITY SYSTEMS

摘要

A counterbalanced vertical track assembly which may be configured withthree types of pulley support assemblies are herein disclosed. The first typeofpulley support assembly has a pair of opposed pulley modules having anelongate structural element interposed the two pulley modules which areattached to end plates at both ends of the elongate structural element. Thesecond type of pulley support assembly has a pair of opposed pulley moduleswhich include male end connectors for demountable engagement of the pulleymodules with another module of the system with female ends. The third type ofpulley support assembly has a pair of opposed pulley modules wherein themodules' pulley brackets are repositionable to varying angular orientations byalternating screw mount positions selected on mount components at oppositeends of an elongate structural element.