Abstract: An automatic water retaining device comprises two or more automatic water retaining units disposed in parallel, the automatic water retaining unit comprises a panel and a base, wherein the base is provided with a water storage cavity, the panel is rotatably disposed on the base, the water storage cavity is opened and closed through the rotation of the panel, a surface of the panel for covering the base is provided with a floating plate, one end of the base different from the end of the base connected with the panel is provided with a first water inlet communicated with the water storage cavity, and when water enters the water storage cavity from the first water inlet and contacts the floating plate, buoyancy is generated to the floating plate and the floating plate drives the panel to rotate and open under the action of buoyancy.

Abstract: An automatic water control system for open ditch drainage includes a drainage control apparatus that is designed to be disposed in a drainage ditch and to control the water level in the drainage ditch, as well as the water table level in the field.

Abstract: A gasket for placement between a glass pane and a vehicle body may include a glass pane-receiving channel and a body-receiving channel. The glass pane-receiving channel and the body-receiving channel may be formed on opposite sides of a gasket body. The gasket may also include a plurality of bulb seals defined in the gasket body. The plurality of bulb seals may include a first bulb seal and a second bulb seal positioned in the glass pane-receiving channel, and a third bulb seal and a fourth bulb seal positioned in the body-receiving channel.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable by articulating wheels in tracks, over an entry port to a storm water structure. Locking the door can be accomplished by rotating bolts that are attached to cams. Rotating the bolts causes the cams to press the door against the tracks. Sealing strips can be compressed between door edges and the track to prevent water from passing around the door. A vacuum truck can remove water and debris from the vault/structure. Other versions allow doors to move downward to allow water to overflow the door. The door can slide upward so water can flow underneath. A door in door version has a secondary door slide up and down in tracks in a main door.

Abstract: A slide gate having a frame assembly including an intermediate cross member coupled between a first and second gate guide members defining a corresponding pair of side channel elements each containing an elongate side seal which abut opposed ends of an elongate top seal secured to the intermediate cross member to seal a gate slidely engaged in the pair of side channel elements.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable by articulating wheels in tracks, over an entry port to a storm water structure. Locking the door can be accomplished by rotating bolts that are attached to cams. Rotating the bolts causes the cams to press the door against the tracks. Sealing strips can be compressed between door edges and the track to prevent water from passing around the door. A vacuum truck can remove water and debris from the vault/structure. Other versions allow doors to move downward to allow water to overflow the door. The door can slide upward so water can flow underneath. A door in door version has a secondary door slide up and down in tracks in a main door.

Abstract: Systems, devices, apparatus, and methods of moving a door, over a water conveyances. Locking the door can be by rotating bolt heads attached to cams. Rotating heads causes cams to press the door against tracks. A strip can be compressed between the door and track to prevent flow. Slidable doors can move to allow water overflow. The door can slide so water can flow underneath. A secondary door can slide within an opening in a door. A half panel can have an upper opening located in a wall, to close or allow water flow. A channel can have grooves in sides of an opening, where a door can slide to different heights to close or allow flow.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable by articulating wheels in tracks, over an entry port to a storm water structure. Locking the door can be accomplished by rotating bolt heads that are attached to cams. Rotating the heads causes cams to press the door against the tracks. Sealing strips can be compressed between door edges and the track to prevent water from passing around the door. A vacuum truck can remove water and debris from the vault/structure. Other versions allow doors to move downward to allow water to overflow the door. The door can slide upward so water can flow underneath. A door in door version has a secondary door slide up and down in tracks in a main door.

Abstract: Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable through tracks, over an entry port to a storm water type vault or storm water structure. Locking the door in place can be accomplished by rotating upwardly protruding bolt type heads that are fixably attached to cams. Rotating the bolt type heads causes the cams to press the door against one side of the tracks. An elongated sealing strip can be compressed between the door edges and the one side of the track and seal and prevent water from passing about the sides of the door. Alternatively, removable wedges can be used to compress door edges in place. Furthermore, a hinged pressure relief door can be attached over a small opening in the slidable door. Opening the small pressure relief door by an elongated tool allows for water on both sides of the sliding door to equalize.

Abstract: An actuated spill barrier, comprises a chassis having a first pier and a second pier, a sump disposed within the chassis, the sump structure having a first angled wall at a first side and a second angled wall at an opposite second side, a door pivotally connected to the first pier and the second pier, the door having an angled first end surface and an angled second end surface, the first angled wall and the angled first end surface being supplementary angles and the second angled wall and the angled second end surface being supplementary angles inhibiting binding of the door, wherein thermal expansion of the door causes the first end surface to climb upwardly along said first angled wall and said second end surface to climb upwardly along said second angled wall inhibiting binding of said door in said sump, the door being biased to pivot from a first actuated position to a second position sealing against the first pier and the second pier.

Abstract: A sea wall system incorporated into a continuous and foundation supported structure, including a plurality of panels which are displaced in either of vertical or horizontal fashion from interior locations associated with the foundation structure. The panels are each constructed of a lightweight and fluid resistant material and are each displaceable from a first retracted position to an extended position, whereby the components collectively establish a heightened water barrier. A fluid communicating opening is defined in the foundation support and, in response to a rising water level, vertically displaces the panels.

Abstract: A sea wall system incorporated into a continuous and foundation supported structure, including a plurality of panels which are displaced in either of vertical or horizontal fashion from interior locations associated with the foundation structure. The panels are each constructed of a lightweight and fluid resistant material and are each displaceable from a first retracted position to an extended position, whereby the components collectively establish a heightened water barrier. A fluid communicating opening is defined in the foundation support and, in response to a rising water level, vertically displaces the panels.

Abstract: A fixable-seal sluice gate has a valve vise (18, 19, 25, 26, 31, 32) that forces a sluice-gate valve uniformly and tightly in sealing-surface contact with a domed seal ring (4) that is fixable conveniently and removably intermediate a sluice-gate plate (3) and a sluice-gate wall (1) of a sluice-gate flange that encompasses a valve side of a sluice-gate aperture (2). A plate locator on the valve vice sets the sluice-gate plate in predetermined sealing-contact position for select structure of the fixable-seal sluice gate. The domed seal ring is a plastic material such as Hypalon® having predetermined toughness to resist particle embedment in combination with having predetermined softness for select uses and objectives. A dome flange (5, 6) on one or both sides of a base of the domed seal ring is bracketed removably to optionally the sluice-gate wall or the sluice-gate plate for rigid, reliable, long-enduring and yet quick and convenient attachment and detachment of the domed seal ring.

Abstract: A vertically reciprocable gate assembly which includes a frame surrounding a port and a gate having a gate member connected by links to an actuating member which is slidably connected to the frame with the gate member between it and the frame. Unless the gate is closed, the gate member is held against the actuating member and out of sealing contact with the frame. When the gate is lowered, it engages a stop which establishes a predetermined position of the gate member relative to the port, further downward movement of the actuating member causes the links to thrust the gate member into its operative position.

Abstract: A floodgate structure is disclosed for closing of an hydraulic flow channel at selected times, as during flooding conditions. A gate panel is normally loosely and slideably received in a recess below grade level. To render the gate operational, it is lifted into a channel-blocking position. Pneumatically inflatable peripheral sealing elements extend from the water side of the panel into sealing contact with a fixed support structure. The opposite side of the panel supports a flexible but noninflatable sealing skirt element, which is pressed into sealing contact with the supporting structure by expansion of the inflatable elements. When thus positioned, the sealing skirt becomes hydrostatically loaded by the pressure of the water and functions as an effective seal in the event of subsequent failure of the pneumatically expandable elements.

Abstract: Apparatus for controlling fluid flow through a gate opening includes frame means that define the opening, and guide means which are adapted to retain a gate disc in slidable relation with the opening. Drawing means for laterally displacing the disc relative to the opening are pivotably connected to lever means having long and short ends. A fulcrum between the ends is pivotably connected to the disc. The short end is disposed to bear against a fixed portion of the guide means when the disc is closed, and the long end is connected to the drawing means to obtain a mechanical advantage in drawing pressure when displacing the disc to a partially open position. The lever means may be a single lever, but a preferred embodiment discloses a pair of levers to apply a uniform drawing pressure on the disc via a hydraulic cylinder that is anchored in a wall of a closed tank which contains the apparatus.

Abstract: A sluice gate assembly has a metal frame surrounding an opening and a metal gate disc mounted for movement between open and closed positions along guides on the frame. The gate disc carries a resilient deformable seal which cooperates in sealing engagement with a plastic seat face on the frame when the gate disc is in the closed position. The sealing interface between the resilient deformable seal and the plastic seat face is arranged at an angle relative to the line of travel of the gate disc along the guides, and the guides are mounted for adjustable movement towards and away from the frame seat face.