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B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
B65G7/00—Devices for assisting manual moving or tilting heavy loads
B65G7/02—Devices adapted to be interposed between loads and the ground or floor, e.g. crowbars with means for assisting conveyance of loads
B65G7/06—Devices adapted to be interposed between loads and the ground or floor, e.g. crowbars with means for assisting conveyance of loads using fluid at high pressure supplied from an independent source to provide a cushion between load and ground