Irrigation gate system

Details Irrigation gate system Irrigation gate system

2006-10-03

2006-10-03

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

C405S094000, C405S087000

Reexamination Certificate

active

07114878

ABSTRACT:
An irrigation gate system installed in a channel (such as a ditch or canal) for controlling the flow of water through the channel maintaining a desired level of water upstream from the irrigation gate system or for controlling water flow downstream from the irrigation gate system. The irrigation gate system includes a gate which is maintained in a closed position for preventing water flow past the gate or alternatively, in one of a plurality of open positions for allowing desired amounts of water in the channel to flow past the gate. The gate is vertically hingedly connected to a pipe shaft supported by a frame installed in the channel. A gate actuator moves the gate between its various positions upon receiving signals from an electronic programmable controller which in turn may receive signals from a variety of sources.

REFERENCES:
patent: 4073147 (1978-02-01), Nomura
patent: 4349296 (1982-09-01), Langeman
patent: 4498809 (1985-02-01), Farmer
patent: 5372456 (1994-12-01), Langeman
patent: 5613803 (1997-03-01), Parrish
patent: 5984575 (1999-11-01), Knott, Sr.
patent: 6171023 (2001-01-01), Townshend
patent: 6427718 (2002-08-01), Stringam et al.

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