Beaver control device for a culvert pipe

Details Beaver control device for a culvert pipe Beaver control device for a culvert pipe

2005-09-09

2008-10-28

Singh, Sunil (Department: 3672)

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

C043S058000

Reexamination Certificate

active

07441989

ABSTRACT:
A beaver control device for a culvert pipe features a generally conical screen having a base portion and an apex portion connected by a plurality of rods. The base portion has a rim sized to fit about the end of the culvert pipe. The apex portion has a rim with an opening sized to selectively receive a weeping tile or other drainage pipe. The screen prevents beavers from damming the culvert while allowing the drainage pipe to drain into or pass through the culvert. A pin is provided to either lock the drainage pipe in place or partially close off the opening in the apex portion when not in use. The screen is movable between raised and lowered positions to allow easy access to the screen and culvert. In one embodiment, the screen is constructed in multiple pieces to allow for easy transport and on-site assembly.

REFERENCES:
patent: 1371143 (1921-03-01), Bradburn
patent: 4998847 (1991-03-01), Thurber
patent: 5102537 (1992-04-01), Jones
patent: 6447206 (2002-09-01), Fleury

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