Method and apparatus for throwing down concrete

Details Method and apparatus for throwing down concrete Method and apparatus for throwing down concrete

1980-04-23

1982-06-01

Rowland, James L.

Material or article handling

Static receptacle and means for charging or discharging, or...

193 25S, 193 32, 222544, B65G 1110, B65G 1120, B65G 6540

Patent

active

043325165

ABSTRACT:
The disclosed method and apparatus for the downward transfer of concrete eliminate separation of concrete ingredients and drop impact of concrete during concrete placing across a high head, by intermittently feeding concrete to an air-tight chute from the top end thereof while normally keeping the chute top end closed airtightly, the chute having at least one flexible portion adapted to be collapsible upon removal of concrete thereform.

REFERENCES:
patent: 2906417 (1959-09-01), Rossi
patent: 3249192 (1966-05-01), Buskirk
patent: 3365240 (1968-01-01), Gordon
patent: 3568733 (1971-03-01), Lau
patent: 3746140 (1973-07-01), Schiffelbein

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