Drainage system with vent

Details Drainage system with vent Drainage system with vent

1980-09-17

1982-05-11

Chambers, A. Michael

Fluid handling

With means for separating solid material from the fluid

Hollow strainer, fluid inlet and outlet perpendicular to...

251339, 128768, 128272, 128350R, F16K 3100, A61J 100, A61M 2700

Patent

active

043288286

ABSTRACT:
A vent for a liquid drainage system comprising, a conduit having a lumen for drainage of liquid, and a filter pervious to air and substantially impervious to the passage of bacteria, with the filter communicating with the atmosphere. The vent has a valve assembly communicating between the lumen and the filter, with the valve assembly being movable between a first closed position to prevent passage of liquid from the lumen against the filter, and a second open position to permit passage of air between the atmosphere and the lumen through the filter.

REFERENCES:
patent: 3192949 (1965-07-01), De See
patent: 3419009 (1968-12-01), Ericson
patent: 3463542 (1969-08-01), Nilsen et al.
patent: 3599620 (1971-08-01), Balin
patent: 4066070 (1978-01-01), Utsuzi
patent: 4070004 (1978-01-01), Friswell
patent: 4116227 (1978-09-01), Eisenberg et al.
patent: 4126558 (1978-11-01), Luceyk

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