Battery operated track hoist

Claim 1

IN A HOIST ASSEMBLY, A SUBSTANTIALLY HORIZONTAL ELONGATED TRACK, FIRST AND SECOND TRACK FOLLOWER ASSEMBLIES MOUNTED ON SAID TRACK, AN ELECTRICAL HOIST HAVING A DIRECT CURRENT MOTOR, A FIRST SUSPENSION MEANS SUSPENDING SAID ELECTRICAL HOIST FROM SAID FIRST TRACK FOLLOWER ASSEMBLY, A BATTERY ASSEMBLY, A SECOND SUSPENSION MEANS SUSPENDING SAID BATTERY ASSEMBLY FROM SAID SECOND TRACK FOLLOWER ASSEMBLY, A FLEXIBLE ELECTRIC CORD MEANS INTERCONNECTING SAID BATTERY ASSEMBLY AND SAID MOTOR WHEREBY A HOIST ASSEMBLY IS PROVIDED WHICH HAS ITS OWN SOURCE OF POWER, SAID TRACK FOLLOWER ASSEMBLIES EACH HAVING AT LEAST ONE PAIR OF TROLLEY WHEELS DISPOSED WITH WHEELS OPPOSITE EACH OTHER ON OPPOSITE SIDES OF SAID TRACK, SAID TRACK AND WHEELS BEING SO CORRELATED IN THEIR SHAPES AS TO SUBSTANTIALLY LIMIT MOVEMENT OF SAID WHEELS TRANSVERSELY OF SAID TRACK, FLEXIBLE TOWING MEANS INTERCONNECTING SAID TWO TRACK FOLLOWER ASSEMBLIES AT THEIR JUNCTION, SAID FIRST TRACK FOLLOWER ASSEMBLY AND SAID FIRST SUSPENSION MEANS FORMING A FIRST MOVABLE UNIT, SAID SECOND TRACK FOLLOWER AND SAID SECOND SUSPENSION MEANS FORMING A SECOND MOVABLE UNIT, SAID MOVABLE UNITS BEING WITHOUT RIGID INTERATTACHMENT, WHEREBY SAID TRACK FOLLOWER ASSEMBLIES CAN ASSUME VARIOUS ANGULAR POSITIONS AS SEEN IN TOP PLAN VIEW WITH RESPECT TO EACH OTHER WHEREBY THEY CAN TURN A HORIZONTAL CORNER IN SAID TRACK INDEPENDENTLY OF EACH OTHER.