Flexible power-supply connections between telescoping members

Claim 1

A LOAD-LIFTING TRUCK HAVING AN UPRIGHT EXTENSIBLE MAST COMPRISING FIRST AND SECOND TELESCOPING SECTIONS, EACH SECTION COMPRISING A PAIR OF SPACED APART UPRIGHTS, A LOAD BEARING CARRIAGE MOUNTED FOR UP AND DOWN MOVEMENT ON THE SECOND MAST SECTION, A FLEXIBLE POWER SUPPLY CONNECTION WHICH IS A SINGLE CONTINUOUS LENGTH AND WHICH EXTENDS BETWEEN ANCHOR POINTS ON THE FIRST MAST SECTION AND ON THE CARRIAGE, RAM MEANS LOCATED BETWEEN THE UPRIGHTS OF THE MAST SECTIONS FOR RAISING OR LOWERING THE CARRIAGE RELATIVELY TO THE SECOND MAST SECTION AND FOR RAISING OR LOWERING THE SECOND MAST SECTION RELATIVELY TO THE FIRST MAST SECTION, A FIRST PULLEY FOR PAYING OUT AND TAKING IN THE FLEXIBLE CONNECTION DURING SAID MOVEMENT OF THE CARRIAGE, WHICH FIRST PULLEY IS LOCATED BETWEEN THE ENDS AND WITHIN THE CONFINES OF THE MAST SECTIONS AND IS MOUNTED ON THE SAID RAM AND ROUND WHICH FRIST PULLEY THE FLEXIBLE CONNECTION IS LED IN ITS PATH FROM THE FIRST MAST SECTION TO THE CARRIAGE, A SECOND PULLEY FOR PAYING OUT AND TAKING IN THE FLEXIBLE CONNECTION DURING RAISING OR LOWERING OF THE SECOND MAST SECTION, WHICH SECOND PULLEY IS LOCATED BETWEEN THE ENDS AND WITHIN THE CONFINES OF THE MASTW SECTIONS AND IS LOCATED BELOW AND IN ALIGNMENT WITH THE FIRST PULLEY AND ROUND WHICH SECOND PULLEY THE FLEXIBLE CONNECTION IS LED IN ITS PATH FROM THE FIRST MAST SECTION TO THE FIRST PULLEY, AND A TENSIONING CABLE WHICH EXTENDS IN THE OPPOSITE DIRECTION ROUND THE SECOND PULLEY FROM THE FIRST MAST SECTION TO THE SECOND MAST SECTION.