Gas and liquid contact apparatus – Contact devices – Porous mass
Patent
1986-06-04
1987-06-16
Miles, Tim
Gas and liquid contact apparatus
Contact devices
Porous mass
141329, 137797, B01F 304
Patent
active
046735372
ABSTRACT:
A trap device for placement on the overflow standpipe provided in the sump of an evaporative cooler for blocking the high velocity inflow of sewer gasses or other contaminants through the standpipe into the cooler during operation thereof without interfering with the water draining functions of the standpipe. The trap device is in the form of an inverted cupshaped body which is mountable in substantially concentric relationship with the standpipe and has a closed top which is spaced above the top of the standpipe and an open bottom end which is submerged in the operational water supply contained in the sump of the evaporative cooler. The closed top of the trap device is provided with a knock-out plug so that the drain hose of a bleed-off system may be sealingly inserted therein when the cooler is so equipped.
REFERENCES:
patent: 395313 (1889-01-01), Clouette
patent: 1489201 (1924-04-01), Freeze
patent: 2089231 (1937-08-01), Uline
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patent: 3228665 (1966-01-01), Dolan
patent: 3470893 (1969-10-01), Nelson
patent: 4173858 (1979-11-01), Cassia
patent: 4192832 (1980-03-01), Goettl
patent: 4289713 (1981-09-01), Goettl
patent: 4573490 (1986-03-01), Kaletsky
patent: 4576013 (1986-03-01), Sperr et al.
Haynes, Jr. Herbert E.
Miles Tim
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