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Class Information
Number:
405/93
Name:
Hydraulic and earth engineering
>
Fluid control, treatment, or containment
>
Flow control
>
Water gate or adjustable weir
>
Condition responsive
> To weight of liquid separated from a main body
Description:
Method or apparatus wherein the water gate has associated therewith which receives liquid therein from the body of liquid controlled by the water gate which means responds to the weight of the received liquid to control the position of the gate.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
8511938
Flood flaps vent for sealed crawlspace
Aug. 20, 2013
6719491
Fluid level control system
Apr. 13, 2004
6171023
Water control gate
Jan. 9, 2001
4963057
Sluice gate for automatically regulating a level
Oct. 16, 1990
4449851
Energy-efficient automatic sluice gate for sustaining a fluid level
May. 22, 1984
4242009
Apparatus for automatically and selectively discharging saline water
Dec. 30, 1980
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