Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1977-11-17
1979-11-20
Granger, Theodore A.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
1375278, E02B 720
Patent
active
041749138
ABSTRACT:
An animal guard for use in a field pipe has a generally circular baffle member formed of relatively thin sheet material mounted for pivotable movement in the direction of effluent flow at a perimetral point inwardly of the pipe at an axial predetermined distance from the open end of the pipe. A stop bar is secured inwardly of the pipe at a distance greater than said predetermined distance so that it is on the opposite axial side of the member. The bar extends from the inner surface of the pipe in a direction inclined in the direction of effluent flow and has a length to restrict pivoting of the member in a second arcuate direction oppositely of the first direction to prevent animal entry past the member while the member is free to pivot in the first direction toward the open pipe end to provide substantially free-flow of debris carrying effluents in the pipe toward the open end, while preventing the entrance of animals into the pipe.
REFERENCES:
patent: 999305 (1911-08-01), Gurnett
patent: 3118469 (1964-01-01), Schliesser
patent: 3289840 (1966-12-01), Kahn
patent: 3445863 (1969-05-01), Wada
Granger Theodore A.
Schliesser Myrtle M.
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