Universal pulley

Claim 1

A HIGH STRENGTH-TO-WEIGHT HEAVY DUTY BELT CONVEYOR PULLEY, SAID HEAVY DUTY PULLEY COMPRISING A SHELL, SHAFT MEANS CONCENTRIC WITH, AND EXTENDING BEYOND THE ENDS OF THE SHELL, AND MINIMUM WEIGHT PRIMARY SUPPORT MEMBERS FOR TRANSFERRING BENDING MOMENT STRESSES FROM THE SHELL TO THE SHAFT MEANS, SAID MINIMUM WEIGHT PRIMARY SUPPORT MEMBERS COMPRISING A PAIR OF BENDING MOMENT TRANSMTTING MEMBERS, SAID BENDING MOMENT TRANSMITTING MEMBERS BEING DISPOSED SUBSTANTIALLY ENTIRELY WITHIN THE SHELL AND ARRANGED GENERALLY COAXIALLY WITH THE SHAFT MEANS, SAID BENDING MOMENT TRANSMITTING MEMBERS HAVING APEX PORTIONS SUPPORTED BY THE SHAFT MEANS AND BASE PORTIONS IN SUPPORTING RELATION WITH THE SHELL, THOSE PORTIONS OF THE BENDING MOMENT TRANSMITTING MEMBERS BETWEEN THE APEX AND BASE PORTIONS THEREOF BEING SUBSTANTIALLY COINCIDENT WITH THE LINE OF MINIMUM BENDING MOMENTS FROM THE SHELL TO THE AREA OF TERMINATION OF THE BENDING MOMENTS AT THE SHAFT MEANS, AND A PAIR OF SECONDARY SUPPORT MEMBERS, ONE AT EACH END OF THE SHELL AND EXTENDING FROM THE SHAFT MEANS INTO SUPPORTING RELATION WITH THE SHELL.