Gas and liquid contact apparatus – Contact devices – Liquid tank
Patent
1990-06-08
1992-02-11
Chiesa, Richard L.
Gas and liquid contact apparatus
Contact devices
Liquid tank
2102212, 261124, 261DIG47, 280 47315, B01F 304
Patent
active
050873911
ABSTRACT:
A portable wheeled hand truck mounts a rotary actuator, powered by a hand or motor-operated pump also contained on the truck, for lifting and rotating a diffused aeration piping array from a liquid/slurry treatment tank into a working and servicing position adjacent to the tank, such as a walkway. The wheeled truck is hand maneuvered so that the powered end of the actuator is in alignment with a connection arm extending from a pivotable pipe which is part of the array. A multi-positionable handle is included on the hand truck which, in an essentially horizontal position, is temporarily fixed to a tank walkway surface to support the reaction forces incident to lifting and rotating the heavy mass of the piping array. When not so fixed, the handle may be moved to an essentially vertical position for storage and to an intermediate position to maneuver the truck into alignment with the piping array connector arm.
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patent: 3606371 (1971-09-01), Rousseau et al.
patent: 3864441 (1975-02-01), Suzuki
patent: 3989627 (1976-11-01), Crandall
patent: 4048267 (1977-09-01), Walker et al.
Baker Hughes Incorporated
Chiesa Richard L.
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