Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1993-04-02
1994-12-13
Corbin, David H.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
52155, 248 87, 404 3, 405154, E02B 500
Patent
active
053724577
ABSTRACT:
A support device for maintaining drainage channel segments at a predetermined elevation above the earth, as surface material is poured and rises from the subgrade level to the finished grade level. Disclosed is an elongated rod with a sharp triangle-shaped tip which is driven into the earth and partially rotated so as to irretractably anchor the rod in the earth. Attached to the other end of the rod is a bracket for securely attaching to a drainage channel segment. Substantial stability is imparted to the support device by means of a flat plate which is forced against the earth with a nut which is threadedly engaged upon a threaded portion of the rod.
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