Helicoidal ramp dropshaft

Details Helicoidal ramp dropshaft Helicoidal ramp dropshaft

1987-03-23

1988-12-13

Recla, Henry J.

Pipes and tubular conduits

With flow regulators and/or baffles

138 42, 193 12, 55 52, 55 55, 55177, 55184, 55191, 55456, D21F 168

Patent

active

047903554

ABSTRACT:
A vertical dropshaft having internal helicoidal ramps for dissipating the energy of liquid passing through the dropshaft and for exhausting air entrained by the falling liquid up the center of the dropshaft.

REFERENCES:
patent: 1928489 (1933-09-01), Pardee
patent: 2323525 (1943-07-01), Ebel et al.
patent: 2849930 (1958-09-01), Freeman et al.
patent: 3161490 (1964-12-01), Dudek
patent: 3362136 (1968-01-01), Burnham, Sr. et al.
patent: 4272258 (1981-06-01), Shifflett
patent: 4714522 (1987-12-01), Holik

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