Closure device for a scupper drain

Details Closure device for a scupper drain Closure device for a scupper drain

1989-03-20

1990-06-19

Spear, Frank

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

49371, 114182, 210163, 220334, 404 2, B01D 3502, B01D 3300

Patent

active

049351290

ABSTRACT:
The passage of a scupper drain is normally maintained in a closed position by a pair of spring-biased semi-circular pivotal flaps which are mounted within a housing provided with an associated cap, thus permitting the flaps to only pivot downwardly for opening the drain to water discharge and preventing vermin from leaving the drain when the flaps are disposed in the closed position.

REFERENCES:
patent: 286951 (1883-10-01), McBee
patent: 595949 (1897-12-01), Johnson
patent: 945534 (1910-01-01), Hill
patent: 999305 (1911-08-01), Gurnett
patent: 1137516 (1915-04-01), Moon
patent: 1522885 (1925-01-01), Heinkel
patent: 2889928 (1959-06-01), Sisk
patent: 2970697 (1961-02-01), Larson et al.
patent: 3884809 (1975-05-01), Logsdon
patent: 4032456 (1977-06-01), Berce

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