ABSTRACT A lifting rig for moving heavy objects on rooftops having a framework supported by a plurality of sets of wheel assemblies. The framework has a pair of longitudinal truss assemblies wherein each truss assembly sits on top of the sets of wheel assemblies. Each of the two truss assemblies has a mast member extending upwardly to a cross beam which thus connects both truss members. Each mast member extends telescopically from an anchor post which itself extends perpendicularly from a truss member forming part of the truss assembly. From the cross beam hangs at least one chain block for raising and lowering a load,; the chain block is hooked onto a means for hooking straddling over the cross beam. Date Recue/Date Received 2020-11-16
LIFTING RIG FOR MOVING HEAVY OBJECTS ON ROOFTOPS
2021-05-19
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / B66C Krane , CRANES |