Rodent barrier device

Details Rodent barrier device Rodent barrier device

1981-08-24

1982-10-26

Leppink, James A.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

210163, 210359, 43 66, B01D 3300

Patent

active

043560873

ABSTRACT:
A barrier device for installation in a drain tile adjacent the outlet of the tile includes a plurality of spaced apart barrier elements affixed to a sleeve to define a perforate gate. The gate is swingably mounted on a pivot rod which projects transversely through openings in the tile adjacent the outlet of the latter. The barrier elements, which are in the form of rods, are affixed to the sleeve to normally urge the gate to a closed position by action of gravity to thereby prevent entry by small animals into the tile. The gate may swing to the open position when engaged by floating debris to thereby permit passage of the debris through the drain tile outlet.

REFERENCES:
patent: 233853 (1880-11-01), Heafer
patent: 818288 (1906-04-01), Race
patent: 906562 (1908-12-01), Rue
patent: 1505996 (1924-08-01), Drought
patent: 2691231 (1954-10-01), Cook
patent: 4110216 (1978-08-01), Wagnon et al.

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