Class 405/94 - To pressure on pivoted water gate

Subclass of Class 405 - Hydraulic and earth engineering
Definition: Method or apparatus wherein a variation in the head of an
No. of patents: 34
Last issue date: 12/23/2008

Number	Title	Issue Date
7467911	Storm drain basin gate system A gate system for an opening through which fluid flows, such as the opening to a storm drain typically found in the curb of an urban street. The system is biased to a closed condition to keep trash out of the drain during dry and low fluid flow situations, then auto...	12/23/2008
7270498	Flood vent The flood vent has an elongated box-shaped frame having a top end, a bottom end including a floor, and opposing sidewalls that define a fluid passageway. The frame has an open front and a track formed in the rear of the frame. A door is slidably mounted in the track...	09/18/2007
7234894	Storm drain basin gate system An automatically openable and closeable gate system that will find primary use with the street curb opening to a catch basin or vault of a storm drain system, and for other similar openings, the system having a gate which during dry and low-flow water drainage situa...	06/26/2007
7192217	Baffle apparatus A baffle apparatus and method for directing fluid flow to reduce damage to an energy dissipating basin that includes an inlet, an outlet, a floor, a sidewall that extends upward from an edge of the floor, and an opposing sidewall that extends upward from an opposing...	03/20/2007
7121764	Portable flood barrier section and flood barrier A portable flood barrier section is located on a ground (2) to form a barrier (3) against flooding water (4), comprising an erectable wall (5) which along one of its edges (6) is hinged to a basis. The hinge (7) enables a ro...	10/17/2006
7114878	Irrigation gate system 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 irrigati...	10/03/2006
7083359	Control gates A control gate is adapted to be installed across a channel for liquids. The Control gate has a barrier member capable of vertical or tilting movement and it is either slidingly or pivotally mounted to a frame of the control gate. In one instance, the control gate ha...	08/01/2006
7067935	Method for regulating the level of a dam installation and dam installation implementing the method Method of regulating a water level of a dam installation having a plurality of turbine generator units arranged to generate electrical power, wherein at least some of the plurality of turbine generator units are arranged at least one of one above another and one bes...	06/27/2006
6866444	Device installed at a ditch on a road, to prevent back flow of sewage and malodor A device installed at a ditch on a road for preventing a backflow of sewage and a malodor is provided. The device includes a frame portion comprising a plurality of frames arranged in parallel with each other, a valve portion being opened or closed in a manner of a ...	03/15/2005
6719491	Fluid level control system A fluid level control system, particularly useful for controlling the level of water flowing in an open channel. The fluid level control system includes a gate having a flap portion interconnected to a lever portion. The flap portion is rotatable about a first pivot...	04/13/2004
6663318	Fluid level control system A fluid level control system, particularly useful for controlling the level of water flowing in an open channel. The fluid level control system includes a gate having a flap port on interconnected to a lever portion. The flap portion is rotatable about a ...	12/16/2003
6623209	Automatic flood gate A horizontally pivoted structurally rigid buoyant flood gate, in a housing for the gate arranged in front of an opening to a construction, is pivotally floated out of the housing by rising water entering a portal to the housing, and rotates buoyantly upwa...	09/23/2003
6478954	Debris collecting apparatus A floating debris removal system has a bypass or overflow grate that is hinged at the top and positioned to swing downstream under certain conditions. The grate is fastened with a shear ring that will break when sufficient force is generated against the g...	11/12/2002
6390730	Protective elements, devices comprising said elements and method for protecting a zone against floods and avalanches The invention concerns a protective element (1) comprising a plate (2) with a first longitudinal edge (3) and a second longitudinal edge (4) spaced by a distance (D) from each other, and a pivot bearing (5, 5') arranged substantially parallel to the first...	05/21/2002
6287050	Foundation flood gate with ventilation A flood gate for use in a foundation crawl space and the like comprises a frame having side walls defining a fluid passageway therethrough, a door pivotally mounted in the frame for bidirectional rotation between two open positions and a closed position t...	09/11/2001
6171023	Water control gate A water control gate assembly comprises a self-actuating top-hung gate for controlling the flow of water in a waterway. The gate is pivotably mounted on a pair of piers located above an upstream of the gate for allowing the gate to pivot between a closed ...	01/09/2001
5944445	Device and method for relieving flooding from enclosed space A flood gate for use in a foundation crawl space and the like comprises a frame having side walls defining a fluid passageway therethrough, a door pivotally mounted in the frame for bidirectional rotation between two open positions and a closed position t...	08/31/1999
5882144	Device and method for triggering the destruction of a selected part of a hydraulic structure, such as a levee, a dike or a backfilled dam, and hydraulic structure comprising such a device This device for triggering the destruction of a selected portion (1 or 11) of a hydraulic structure such as an embankment dam, dike, or levee built out of erodible material so as to be destroyable by hydraulic erosion is constituted by at least one massiv...	03/16/1999
5472293	Multipurpose automatic gate control A device with a gate release door and other water release openings to attach to the mouth of outlet pipes of flood control structures and similar reservoirs to control the storage and release of water, comprising a gate release door in initial closed posi...	12/05/1995
5468090	Bending weir A flap weir with a base wall arranged between two side walls, a flap is fixed and sealed in a non-rotary manner by one longitudinal edge to the base wall, the other longitudinal edge forming an overflow edge. The flap is modified by natural deformation oc...	11/21/1995
5310284	Weak link prop for wicket dam The invention is directed to a breakaway prop for a wicket employing a slble and rotatable prop bearing which is secured to the prop by shear pins. Upon application of sufficient force, the shear pins release the prop bearing and allow the wicket to drop...	05/10/1994
5222834	Collapsible safety prop for waterway dams A collapsible safety prop for supporting a waterway dam gate comprising first and second links, each of which has a longitudinal axis and an inner and outer end. The inner ends of the links are provided with a lateral member extending laterally from the l...	06/29/1993
5195846	Spillway for discharging extraordinary floods at dams having at least two flood discharge structures For the purpose of providing a more economical alternative to conventional control gates for the quasi-permanent closure of all or part of the length of the overflow spillway of a dam except when discharging extraordinary floods, the invention consists of...	03/23/1993
5125766	Mechanical automatic tilting weir with selfadjusting lowering of the weir-level during larger discharges The invention concerns a weir with an on a horizontal axis tilting gate (1). The control is automatic and completely mechanical and operates without an external source of energy. The control uses a float/counterweight (4) placed in an enclosure (5) which ...	06/30/1992
5061118	Overflow spillway for dams, weirs and similar structures For the purpose of effecting a quasi-permanent raising of the normal water level of an impounded reservoir and thereby augmenting its storage capacity except during the passage of major floods, the invention consists of rigidly fixing to the sill of the s...	10/29/1991
4787774	Fluid control apparatus A flexible membrane supported on a series of compound leaf springs is mounded on the fixed crest of a dam or waterway to retain fluid at or below a predetermined maximum level. The apparatus is adapted to automatically release fluid which rises above this...	11/29/1988
4753550	Apparatus for control of a liquid level, especially water level An apparatus for control of a liquid level, especially water level, comprising a partition (10) arranged in a drain channel (24) and having an upper edge (12) which serves as overflow. At its lower or bottom edge (14) opposite the upper overflow edge (12)...	06/28/1988
4455106	Flash gate board A water control flash gate board uses a torsion spring to bias it in a upright water holding position. When the pressure on the upstream side of the gate board is sufficient to overcome the force of the torsion spring, the gate board will pivot towards a ...	06/19/1984
4349296	Irrigation ditch gate A gate for an irrigation ditch includes a rectangular frame, in which a pair of gates are pivotally mounted on shafts for rotation around vertical axes at the sides of the frame; helical springs connected to the top ends of the shafts and to the frame for...	09/14/1982
4174913	Animal guard for field pipe 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 d...	11/20/1979
4133123	Utility bulletin board A work control center system which incorporates a planar member formed of a porous resilient material adapted for mounting of sheet material through insert of tack members. The planar member includes classification elements where the materials being mount...	01/09/1979
4114381	Positive flow estuary structure A barrier device comprising a plurality of gated structures extending between opposite shores of a tidal estuary provides a means of preventing intrusion of heavier, colder sea water with each incoming tide and to then be the means for ejecting large volu...	09/19/1978
4073147	Water gate control system The present invention discloses a water gate control system which selects either the automatic mode or forced mode, in the automatic mode the gate being automatically swung depending upon the level of a stream or water-way between the upright or closing p...	02/14/1978

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Class 405/94 - To pressure on pivoted water gate