Air water cranes

Details Air water cranes Air water cranes

E - Fixed Constructions

02

B

254/152

E02B 17/02 (2006.01) B66C 23/30 (2006.01) E04H 12/34 (2006.01)

Patent

CA 1211100

1-ABSTRACT 1-1 The present invention deals with a new hoisting/sup- porting machine called Air/Water cranes abbreviated AWCranes), used for supporting and lifting loads to different levels, using a combination of water pressure together with uplifting buoyancy forces acting directly or indirectly on the top platform of said hoisting machine, which consists generally of an outer, upright, water- retaining, telescopic column and an inner, upright, air- filled, floating, telescopic column which develops the buoyancy forces that lift up and support the top platform of the unit, which unit, when used in sub-zero temperature, has to be provided with means to prevent the water, inside the column, from freezing, while for severe, arctic, low temperatures the unit is converted into an all-ice column with the provision to accommodate the expanding ice inside the columns, resulting in an ice pillar acting like a concrete pillar to support the top platform of the unit with its charge.

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