Rain water roof outlet or similar for a building

Details Rain water roof outlet or similar for a building Rain water roof outlet or similar for a building

1977-06-20

1978-09-12

Shapiro, Jacob

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

52 12, 210163, E02B 508, E02B 904

Patent

active

041126912

ABSTRACT:
A rain water roof outlet comprising a vertical pipe and a trough fixed to the upper end of said pipe. A lid is fastened in the trough above the inlet end of said pipe. The lid is larger than the inlet end of the pipe to cause water to flow radially in the trough to said inlet end and to prevent suction of air into the pipe when the water level in the trough is above said lid. The lid is closed except for a number of small holes extending through the lid. The total area of said holes is at the most 15% of the cross-sectional area of the vertical pipe so that the formation of an air whirl in the vertical pipe is prevented in spite of the air entering the inlet end of the pipe through said holes.

REFERENCES:
patent: 803316 (1905-10-01), Vogel
patent: 1582646 (1926-04-01), Flesch et al.
patent: 2568521 (1951-09-01), Stauch, Sr.

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