Static structures (e.g. – buildings) – Including component designed to receive a disparate article... – Mounted for movement
Patent
1987-12-16
1990-04-03
Murtagh, John E.
Static structures (e.g., buildings)
Including component designed to receive a disparate article...
Mounted for movement
52115, 521265, 52143, 254 93R, 91 4R, E04H 1218, B66F 1104
Patent
active
049128906
ABSTRACT:
The present invention deals with a new hoisting and supporting machine used for supporting and lifting loads from the base level to different levels. The machine is essentially an air and water crane which is a combination of water pressure together with uplifting buoyancy forces acting directly or indirectly on the top platform of the hoisting machine. It 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. When used in sub-zero temperature, the unit is 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 provisions 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 loads.
REFERENCES:
patent: 2131528 (1938-09-01), Soyer
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