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US 4,363,735 AGranted
Removal of fly ash from the surface of liquids
OwnerDerek L. Hookinventor
Life of this patent
Estimating the term…
Abstract
A method of removing a part of a stratum of fly ash comprising particles of relatively fine mean dimensions from the surface of a pond comprising submerging the leading edge of a scoop having a grid structure below the layer of fly ash, driving the scoop forwardly so that ash enters the scoop, lifting the scoop above the pond so that it drains of liquid and then tipping the drained ash from the scoop to a suitable location.
Claims7
A method of removing a part of a stratum of fly ash comprising particles of relatively fine mean dimensions from the surface of a liquid comprising:
- (a) at least partly submerging a scoop having a plurality of laterally spaced elongate lifting elements below the stratum the spacing between the lifting elements being very much larger than the mean dimensions of the particles;
- (b) lifting the elements through the stratum so that at least a part of the fly ash is raised above the stratum on the elements;
- (c) allowing the raised ash to drain by liquid flow through the spaces between the elements;
- and
- (d) tilting the elements to discharge the drained ash to a location away from the liquid.
2 more elements
Dependencies are inferred from the claim text.