US20130209173A1 - Floodgate - Google Patents
Floodgate Download PDFInfo
- Publication number
- US20130209173A1 US20130209173A1 US13/877,622 US201013877622A US2013209173A1 US 20130209173 A1 US20130209173 A1 US 20130209173A1 US 201013877622 A US201013877622 A US 201013877622A US 2013209173 A1 US2013209173 A1 US 2013209173A1
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- United States
- Prior art keywords
- panel
- floodgate
- closed position
- opened position
- gas strut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
- E04H9/145—Floods
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/54—Sealings for gates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
- E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/627—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/60—Suspension or transmission members; Accessories therefore
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/644—Flexible elongated pulling elements; Members cooperating with flexible elongated pulling elements
- E05Y2201/654—Cables
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B2009/007—Flood panels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Revetment (AREA)
- Barrages (AREA)
- Special Wing (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
A floodgate is disclosed. The floodgate comprises a panel configured to be movable between an opened position and a closed position wherein in the opened position, the panel forms a barrier against flood water; and at least one gas strut configured to move the panel from the closed position to the opened position.
Description
- The present invention relates to a floodgate and a floodgate system comprising a plurality of floodgates.
- Hurricanes, typhoons, thunderstorms, tropical storms and torrential rain often lead to an increase in the rate of rainfall, an increase in the length of time the rainfall lasts and an increase in the total amount of rainfall. Many infrastructure flood control and land/mud slide prevention measures may not be effective against such increased rainfall. Although this may be overcome through infrastructure development (for example, infrastructure development to improve drainage of excess water), such development requires time and may not be sufficient or effective.
- Floods caused by such increased rainfall often lead to a huge amount of damages, losses, disruptions and inconveniences. For example, a flood developed within an underground carpark due to an excessive amount of water entering the carpark often results in the damage of several cars. Furthermore, a flood developed within a shopping mall may necessitate the temporary closure of several shops, leading to monetary losses for these shops.
- A floodgate (or flood barrier) serves as a quick and effective measure against any potential damage caused by floods. In particular, the floodgate acts as a barrier to prevent water from getting into an infrastructure (for example, a building or an underground carpark). This may serve as a temporary solution while infrastructure development to improve the drainage system is being carried out.
- Most of the currently available floodgates are activated either manually or with the use of electricity. Manually activated floodgates often require at least one designated person to be on site at all times. Otherwise, there is a risk that the floodgate cannot be activated in time. For floodgates which are activated using electricity, there is a risk that electrical supply may be cut off during times of heavy rain, preventing these floodgates from being activated. If the gap which is closed by the floodgate is long, the designated person also has to install vertical posts to support the panels. This may be time consuming and labour intensive depending of the size of the area to be protected against flood waters.
- U.S. Pat. No. 6,623,209 discloses a floodgate which can be automatically activated without using electricity. This floodgate works under the action of water pressure. In particular, during times of increased rainfall, surface water enters a portal below a panel of the floodgate and pivotingly buoys the panel upwards. Singapore patent application 9800143-1 discloses a floodgate which works using the same principles. Although these floodgates are activated without using electricity, the portal below the panel of the floodgate needs to be deep so that enough water can enter the portal to generate a force sufficient to raise the panel. If the panel is vehicular trafficable, the portal needs to be even deeper since such a panel is usually heavier. The costs for such systems are therefore high, as is the cost of the extensive construction work required to install them.
- The present invention aims to provide new and useful floodgates and floodgate systems comprising a plurality of floodgates.
- A first aspect of the present invention is a floodgate comprising: a panel configured to be movable between an opened position and a closed position, wherein in the opened position the panel forms a barrier against flood water; and at least one extendable member configured to move the panel from the closed position to the opened position wherein the extendable member is a gas strut.
- A gas strut is a set of elongate members (usually two members) which are relatively slidable (e.g. by a telescoping motion) between a compressed configuration and an extended configuration. The gas strut includes a trapped amount of gas which is compressed in the compressed configuration and urges the gas strut into the extended configuration. It is advantageous to use gas struts to move the panel from the closed position to the opened position in the floodgate. Unlike hydraulic pumps which require motor pump oil and power supply, gas struts can be operated without the use of electrical power supply. Furthermore, no external air pump is required to operate a gas strut. This is advantageous over pneumatic cylinders which require an external air compressor. In highly humid areas, a large amount of condensate forms in a pneumatic cylinder. The mixture of this condensate with lubrication oil existing in the pneumatic cylinder can often damage the cylinder. Furthermore, pneumatic cylinders employ paper gaskets which may also be damaged by the condensate.
- A second aspect of the invention is a floodgate comprising a frame for installation at a chosen location (e.g. in a floor), a panel connected to the frame by a hinge, and connection means (e.g. a bracket) for connecting at least one gas strut to the frame for opening the panel, whereby the gas strut acts on a movable portion of the panel, and the frame maintains the relative positions of the hinge and the connection means, thereby preventing transmission of force generated by the gas strut to the location.
- A third aspect of the present invention is a floodgate comprising a panel configured to be movable between an opened position and a closed position about a hinge axis, and a plurality of sealing elements provided at edges of the panel which are opposite each other with respect to the direction of the hinge axis (i.e. spaced apart in the direction of the hinge axis), the sealing elements extending along the edges of the panel, whereby upon locating the panel in the opened position with the edges of the panel in contact with respective other objects, the sealing elements provide respective watertight seals against the other objects.
- Another expression of the third aspect of the invention is a floodgate system comprising: a plurality of floodgates, each floodgate comprising a panel configured to be movable between an opened position and a closed position, and a plurality of sealing elements; wherein at least one sealing element of each floodgate is configured to overlap with a sealing element of another floodgate such that a continuous barrier is formed by the panels and the overlapping sealing elements.
- In the floodgate system in the third aspect of the present invention, due to the overlapping sealing elements which close the gaps between the panels of the floodgates, a continuous barrier can be formed. Hence, no additional barriers (e.g. vertical posts) are required between the panels of the floodgates when the floodgate system is activated and a faster setup time for the floodgate system can be achieved.
- An embodiment of the invention will now be illustrated for the sake of example only with reference to the following drawings, in which:
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FIG. 1( a)-(b) illustrate perspective views of a floodgate according to a first embodiment of the present invention; -
FIGS. 2( a) -2(d) respectively illustrate a top view, side view, front view and sectional view of the floodgate ofFIG. 1 . -
FIG. 3 illustrates a cross-sectional side view of the floodgate ofFIG. 1 when the floodgate ofFIG. 1 is deactivated; -
FIG. 4 illustrates a magnified view of a first portion of the cross-sectional side view ofFIG. 3 ; -
FIG. 5 illustrates a magnified view of a second portion of the cross-sectional side view ofFIG. 3 ; -
FIG. 6 illustrates a cross-sectional side view of the floodgate ofFIG. 1 when the floodgate ofFIG. 1 is activated; -
FIG. 7 illustrates a magnified view of a portion of the cross-sectional side view ofFIG. 6 ; -
FIG. 8 illustrates a perspective view of a hinge and a perspective view of a bracket arranged with a portion of a tubular drive in the floodgate ofFIG. 1 ; -
FIG. 9( a) illustrates a cutaway perspective view of the floodgate ofFIG. 1 showing the arrangement between the hinge and the bracket ofFIG. 8 whereasFIG. 9( b) illustrates a magnified view of a portion of the perspective view ofFIG. 9( a); -
FIGS. 10( a) and (b) illustrate a second embodiment of the invention; -
FIG. 11 illustrates perspective views of a floodgate which is a third embodiment of the invention; -
FIG. 12 illustrates a cross-sectional side view of the floodgate ofFIG. 11 when the floodgate ofFIG. 11 is deactivated; -
FIG. 13 illustrates a cross-sectional side view of the floodgate ofFIG. 11 when the floodgate ofFIG. 11 is activated; -
FIGS. 14( a) and 14(b) illustrate perspective views of afloodgate system 1300 comprising a plurality of floodgates arranged along a straight line; -
FIG. 15( a) illustrates a cross-sectional view of a part of the floodgate system ofFIGS. 14( a) and 14(b) whereasFIG. 15( b) illustrates magnified views of parts of the cross-sectional view ofFIG. 15( a); -
FIGS. 16( a) and 16(b) illustrate perspective views of a floodgate system comprising a plurality of floodgates arranged in a U-shaped manner; -
FIGS. 17( a) and 17(b) illustrate perspective views of a floodgate system comprising a plurality of floodgates arranged in a faceted manner. -
FIG. 1 illustrates perspective views of afloodgate 100 according to an embodiment of the present invention.FIG. 1( a) illustrates thefloodgate 100 when thefloodgate 100 is activated whereasFIG. 1( b) illustrates thefloodgate 100 when thefloodgate 100 is deactivated.FIGS. 2( a) -2(d) respectively illustrate a top view, side view, front view and a sectional view of thefloodgate 100 when thefloodgate 100 is activated. The sectional view ofFIG. 2( d) is in the plane marked A-A inFIG. 2( c). Thefloodgate 100 is also referred to as an Automatic Flood Barrier System (AFBS). - As shown in
FIGS. 1 and 2 , thefloodgate 100 comprises apanel 102 and a plurality of extendable members in the form of gas struts 104, a plurality of rotatable drives in the form of tubular drives 202 and abase frame 108 for holding thepanel 102. - The
panel 102 is configured to be movable about hinges 802 (described below) between an opened position and a closed position. When thefloodgate 100 is activated as shown inFIG. 1( a), thepanel 102 is in the opened position to form a barrier against floodwater. When thefloodgate 100 is deactivated as shown inFIG. 1( b), thepanel 102 is locked in the closed position and is human and vehicular trafficable. In other words, thepanel 102 is configured to withstand a weight of expected traffic over it when it is in the closed position. This traffic may be from pedestrians and/or automobiles. In fact, for installation in a road, the panel must be able to bear the weight of the heaviest vehicle which is likely to pass along the road (e.g. an articulated lorry), which implies being able to bear at least one metric ton, and preferably significantly more, such as at least 5 metric tons or at least 10 metric tons. - Each
gas strut 104 is configured to move thepanel 102 from the closed position to the opened position. Eachgas strut 104 comprises a first portion in the form of a piston and a second portion in the form of a cylinder. The cylinder is filled with gas (for example, nitrogen gas) and the piston is movable within the cylinder. The length of eachgas strut 104 is variable between a minimum length and a maximum length via the movement of the piston within the cylinder. When thepanel 102 is locked in the closed position i.e. when thefloodgate 100 is deactivated, eachgas strut 104 is at the minimum length and the gas in the cylinder of eachgas strut 104 is pressurized. This pressure results in a force exerted against the lockedpanel 102. - When the
floodgate 100 is activated, thepanel 102 is unlocked and the force exerted against thepanel 102 by eachgas strut 104 pushes against thepanel 102, moving thepanel 102 to the opened position as shown inFIG. 1( a). Thetubular drive 202 is configured to rotate freely with this movement of thepanel 102. The required magnitude of the force exerted by eachgas strut 104 on thepanel 102, and thus the required pressure of the gas in the cylinder of eachgas strut 104 when thepanel 102 is in the closed position, depends on the weight of thepanel 102. Although astronger panel 102 can withstand a higher weight of traffic over it and a higher force from the floodwater against it, astronger panel 102 is usually heavier and a greater force is usually required to lift thepanel 102 from the closed position to the opened position. In one example, eachgas strut 104 is selected such that the combined force the gas struts 104 exert on thepanel 102 is equal to the expected force from the floodwater against thepanel 102 during a typical flood. In one example, eachgas strut 104 is a Bansbach gas strut. - Each
gas strut 104 further comprises a dampening mechanism. This dampening mechanism is configured to reduce the rate at which thegas strut 104 moves thepanel 102 from a predetermined position to the closed position whereby the predetermined position lies between the closed position and the opened position. This cushions and slows down the final opening of thepanel 102. The reduction in the rate at which thegas strut 104 moves thepanel 102 is adjustable. In one example, the dampening mechanism employs oil dampening using a body of oil within thegas strut 104 which is acted on as thegas strut 104 expands, and the reduction in the rate of movement of the panel depends on the amount of oil employed by the dampening mechanism. Alternatively, the dampening mechanism may employ other types of dampening, for example torsion spring dampening. - The tubular drives 202 are arranged with the
panel 102 such that thepanel 102 moves with a rotation of the tubular drives 202 from the opened position to the closed position. In the configuration shown the tubular drives 202 are mounted on thepanel 102, and connected to thebase frame 108 via ropes 312 (but alternative arrangements are possible in which the tubular drives 202 are mounted to thebase frame 108 and connected to thepanel 102 via ropes) To deactivate thefloodgate 100, the tubular drives 202 are turned on. This starts the rotation of the tubular drives 202 and a force is exerted on thepanel 102 via ropes 312 (described below) against the force from the gas struts 104 to move thepanel 102 from the opened position to the closed position. Two mechanical limit switches are present in eachtubular drive 202. Each of these switches can be calibrated independently using screws on thetubular drive 202 and serve to stop the rotation of thetubular drive 202 after thepanel 102 has reached the opened or closed position. In one example, eachtubular drive 202 is a weatherproof tubular drive which when turned on, has an average internal rotational speed of about 2000 rpm, and an internal gear mechanism to reduce this rotational speed, and thereby rotate an external surface of the drive at a rotational speed of about 11 rpm, the external surface being coupled to arope 312 for moving thepanel 102. The weight/force in which the tubular drive is able to pull is between 120 kg to 500 kg. - Each
tubular drive 202 also comprises a centrifugal brake. The centrifugal brake is configured to exert a force against the rotation of thetubular drive 202 when a speed of the rotation exceeds a predetermined threshold. In one example, eachtubular drive 202 further comprises a tubular drive tube and the centrifugal brake in eachtubular drive 202 further comprises brake pads extendable from a main body of the centrifugal brake. When the speed of rotation of thetubular drive 202 exceeds the predetermined threshold, the brake pads extend from the main body of the centrifugal brake and exert an opposing frictional force against a surface of the tubular drive tube. This slows down the rotational speed of thetubular drive 202 and may even stop the rotation of thetubular drive 202 completely. However, usually in a split second of time after the rotational speed of thetubular drive 202 decreases, the brake pads are retracted via resilient elements attached between the brake pads and the main body of the centrifugal brake. These resilient elements may be springs. This removes the opposing frictional force exerted against the surface of the tubular drive tube and the rotational speed of thetubular drive 202 increases. - If the force exerted by the
gas strut 104 on thepanel 102 is too strong, the speed at which thepanel 102 moves from the closed position to the opened position may be too high and this speed may continue increasing throughout the movement of thepanel 102 due to the momentum of the movement. Such an abrupt opening of thepanel 102 may result in a toppling of thebase frame 108 from its installed position when thepanel 102 reaches the opened position. Similarly, an abrupt closing of thepanel 102 may also damage thefloodgate 100. The presence of the centrifugal brake in eachtubular drive 202 is advantageous as this helps to limit the speed of rotation of thetubular drive 202. This in turn limits the speed at which thepanel 102 moves due to the coupling between thetubular drive 202 and thepanel 102. - The
floodgate 100 further comprises a plurality of locking members whereby each locking member is integrally formed with atubular drive 202. Each locking member is configured to be switchable between a locked state and an unlocked state. In the locked state, the locking members lock thepanel 102 in the closed position whereas when the locking members are in the unlocked state, thepanel 102 moves from the closed position to the opened position due to the force exerted by the gas struts 104. To activate thefloodgate 100, the locking members are deactivated i.e. switched from the locked state to the unlocked state. In one example, each locking member is an energized electromagnetic lock (which may be a 24V DC electromagnet) and is deactivated by disrupting the power supply to the locking member. -
FIG. 3 illustrates a cross-sectional side view of thefloodgate 100 when thefloodgate 100 is deactivated i.e. when thepanel 102 is in the closed position.FIG. 4 illustrates a magnified view of a first portion of the cross-sectional side view inFIG. 3 (see DETAIL A) whereasFIG. 5 illustrates a magnified view of a second portion of the cross-sectional side view inFIG. 3 (see DETAIL B). - As shown in
FIGS. 3-5 , thepanel 102 comprises an extrudedaluminium sash frame 302, anintermediate layer 304 and anupper layer 306. In one example, the combined weight of thesash frame 302, theintermediate layer 304 and theupper layer 306 is approximately 200 to 250 kg per square meter. - The
intermediate layer 304 is arranged between thesash frame 302 and theupper layer 306. Thisintermediate layer 304 serves to strengthen thepanel 102 such that thepanel 102 is strong enough to withstand the weight of expected traffic over it when it is in the closed position and the force of floodwater against it when it is in the opened position. In one example as shown inFIGS. 3 to 5 , theintermediate layer 304 is filled with a layer of grout comprising for example, sand and cement and a galvanised wire mesh is integrated within the layer of grout. Alternatively, theintermediate layer 304 may be filled with aluminium plates, steel plates, mineral fibre insulation, sand alone, cement alone, boards or concrete. - The
upper layer 306 is finished with a material selected to match the surface of the ground area around thepanel 102 in the closed position. This material may be tile or stone. This allows thepanel 102 to blend in with the surroundingground surface 307. Besides this aesthetic function, theupper layer 306 also serves as a first layer of protection for the interior of thefloodgate 100. - In one example, the
sash frame 302 and thebase frame 108 are made of Grade AA6063 T5 profiled aluminium extrusions of appropriate thickness for structure steadfastness. These aluminium extrusions are chamfered, welded and sand-smoothed. The welded aluminium extrusions are powder coated using a non-metallic colour to prevent corrosion. Hot dip galvanized steel may be added to reinforce the aluminium extrusions. - As shown in
FIGS. 3-5 , thefloodgate 100 also comprisesprotective cover plates 308 to prevent water or any external object from entering the interior of thefloodgate 100 when thefloodgate 100 is deactivated. Thefloodgate 100 further comprises a plurality ofseals floodgate 100 is deactivated, theseseals 310 a-310 d serve as additional barriers to prevent water or any external object from entering the interior of thefloodgate 100. Preferably, theseseals 310 a-310 d are EDPM gaskets as EDPM gaskets are UV resistant and have a low sinkage rate. - As shown in
FIGS. 3-5 , thefloodgate 100 further comprises a plurality of screws for example, self-tap screws 316 for holding together different components of thefloodgate 100. Thefloodgate 100 also comprises lifting handles (not shown inFIGS. 3-5 ) which are recessed into thepanel 102 allowing thepanel 102 to be manually lifted from the closed position to the opened position. This is useful in the event that thegas strut 104 fails to operate. -
FIG. 6 illustrates a cross-sectional side view of thefloodgate 100 when thefloodgate 100 is activated i.e. when thepanel 102 is in the opened position.FIG. 7 illustrates a magnified view of a portion of the cross-sectional side view inFIG. 6 (see DETAIL C). - As shown in
FIGS. 6-7 , when thepanel 102 is in the opened position, theseal 310 a presses against thebase frame 108 to form a continuous barrier with thepanel 102 against floodwater. Furthermore, theprotective cover plates 308 are pressed against thepanel 102 to provide further protection against floodwater. Thefloodgate 100 further comprises a plurality of sealing elements (not shown inFIGS. 3-7 ) which are configured to fill gaps between thepanel 102 and surrounding walls or vertical posts such that a continuous barrier against floodwater is formed by the sealing elements and thepanel 102 when thepanel 102 is in the opened position. These sealing elements are preferably EDPM gaskets as EDPM gaskets are UV resistant and have a low sinkage rate. - As shown in
FIGS. 3-7 , eachtubular drive 202 is coupled to thepanel 102, and connected to thebase frame 108 via arope 312 and ahorseshoe saddle 314. Therope 312 may be a stainless steel wire rope. One end of therope 312 is coiled around thetubular drive 202 whereas the other end of therope 312 is connected to thehorseshoe saddle 314 which is in turn connected to thebase frame 108. When thepanel 102 moves from the closed position to the opened position, the end of therope 312 connected to thehorseshoe saddle 314 is pulled away from thetubular drive 202. Thus, therope 312 uncoils from thetubular drive 202, rotating thetubular drive 202 with the movement of thepanel 102. When thetubular drive 202 is turned on, thetubular drive 202 rotates in a direction coiling therope 312 around itself. This pulls the horseshoe saddle 314 (and thus, the panel 102) towards thetubular drive 202, hence moving thepanel 102 from the opened position to the closed position. The horseshoe saddles 312 are covered by a “piano lid flap” 109, which folds down into a horizontal configuration in the closed position of thepanel 102, but is inclined in the open position of the panel 102 (as shown inFIG. 1( a)). - In one example as shown in
FIGS. 1-2 , thefloodgate 100 comprises fourtubular drives 202 and eachtubular drive 202 is configured to exert a force on thepanel 102 to move thepanel 102 from the opened position to the closed position. The force exerted by eachtubular drive 202 at a point a distance away from a first end of thepanel 102 is equal to the force exerted by a differenttubular drive 202 at a point the same distance away from a second end of thepanel 102 opposite the first end. This is achieved by placing tworopes 312 through thepanel 102. The ends of one of theseropes 312 are coiled around the outer tubular drives 202 (i.e. tubular drives 202 nearer the edges of the panel 102) whereas the ends of theother rope 312 are coiled around the inner tubular drives 202. - The
floodgate 100 further comprises a plurality ofhinges 802 andbrackets 804.FIG. 8( a) illustrates a perspective view of ahinge 802, andFIG. 8( b) illustrates a perspective view of abracket 804 arranged with a portion of thegas strut 104. Thehinge 802 includes anelongate hinge pin 803 having a central axis which is the hinge axis of thehinge 802. Thegas strut 104 is connected to thebracket 804 by apivot 805.FIG. 9( a) illustrates a cutaway perspective view of thefloodgate 100 showing the arrangement between eachhinge 802 and eachbracket 804 whereasFIG. 9( b) illustrates a magnified view of a portion of the perspective view inFIG. 9( a) (see DETAIL C1). In one example, thehinge 802 is made of chamfer-welded stainless steel toGrade SUS 304 orSUS 316. - As shown in
FIGS. 9( a) and 9(b), thebracket 804 serves to secure thegas strut 104 to thebase frame 108. Thebracket 804 is further arranged with thehinge 802 in a unique manner which reduces the amount of force required from thegas strut 104 to move thepanel 102 from the closed position to the opened position. This is elaborated as follows. - When the
panel 102 moves, the weight of thepanel 102 is supported not only by the gas struts 104 but also by thehinges 802. In other words, the weight of thepanel 102 is distributed between the gas struts 104 and thehinges 802. Hence, gas struts 104 which are not strong enough on their own to bear the weight load of thepanel 102 can be used and no additional hand-lifting force is required before the combined force from the gas struts 104 is sufficient to move thepanel 102. Since the force required from eachgas strut 104 is lower, the minimum angle between eachgas strut 104 and thepanel 102 can be reduced (i.e. the component of the length direction of thegas strut 104 which lies in the direction perpendicular to the panel—which is proportional to the component of the force exerted by the gas strut which acts to rotate the panel about the hinge—can be reduced) compared to a situation in which thegas strut 104 bears the whole weight of thepanel 102. In other words, the vertical distance which the fixed end of thegas strut 104 lies beneath the axis of thehinge 802 is reduced. Thus, the depth of thefloodgate 100 required for holding theentire gas strut 104 can be reduced. This in turn means that the ground need not be evacuated too deeply to install thefloodgate 100. - Note that the expansive force which the
gas strut 104 generates decreases with an increasing length of thegas strut 104. Due to the reduced angle between thegas strut 104 and thepanel 102 when thepanel 102 is in the closed position, the length of thegas strut 104 when thepanel 102 is in the opened position is reduced. This allows a greater force to be exerted on thepanel 102 against the impact of floodwater when thepanel 102 is in the opened position. - Furthermore, as shown in
FIGS. 9( a) and 9(b), eachhinge 802 andbracket 804 are arranged such that they act against each other. Since thebracket 804 and hinge 802 are connected via thebase frame 108 and maintained in a constant positional relationship, much less force is transmitted to the ground than would be the case if thebracket 804 and hinge 802 were individually fixed to the ground. Furthermore, when thepanel 102 moves, the force thepanel 102 exerts on thehinge 802 and is to some extent balanced by an opposing force exerted by thebracket 804. This buffers thebase frame 108 from the weight of thepanel 102 when thepanel 102 is moving. Thus, thebase frame 108 simply needs to support the dead load of thepanel 102 as if thepanel 102 were stationary (either in the opened or closed position) and not the dynamic load of thepanel 102 when thepanel 102 is moving. - In one example, for a
panel 102 of weight 350 kg, without thehinge 802 andbracket 804 assembly, thegas strut 104 would need to exert a force of 1500 kg to move thepanel 102 from the closed position to the opened position and a depth of more than 300 mm below the hinge point is required to hold thegas strut 104. However, with thehinge 802 andbracket 804 assembly, a force of only 750 kg and a depth of only approximately 150 mm is required. - In one example, each
gas strut 104 is arranged with thepanel 102 such that when thepanel 102 is in the closed position, a first end of thegas strut 104 lies substantially directly below an end of thepanel 102 and a second end of thegas strut 104 opposite the first end lies directly below a point on thepanel 102 which is two-thirds of the length of thepanel 102 from the end of thepanel 102. This arrangement is advantageous as the weight of thepanel 102 can contribute substantially to the total force against thegas strut 104 to move thepanel 102 from the opened position to the closed position. However, even in this arrangement, due to the above-mentionedhinge 802 andbracket 804 assembly, thegas strut 104 is still able to exert a sufficient force to move thepanel 102 from the closed position to the opened position without increasing the angle between thegas strut 104 and thepanel 102 when thepanel 102 is in the closed position A further advantage of using the weight of thepanel 102 ton contribute to the force against the gas struts 104 is that the pulling force and/or load thetubular drive 202 needs to lift/pull is much lesser than the total force generated by the gas struts 104, and does not need to match the total force of the gas struts 104. - The
floodgate 100 is installed into the ground area as shown inFIGS. 3-7 . The ground area may be in front of an aperture, opening or doorway of a premise to be protected against floods. Thefloodgate 100 is arranged with the aperture, opening or doorway such that thepanel 102 is perpendicular to the aperture, opening or doorway when it is in the closed position. In this way, when thepanel 102 is in its opened position, it forms a bather blocking the aperture, opening or doorway of the premise to be protected. In other words, thepanel 102 adopts the position of a single or double leaf door against intruding floodwater. - To install the
floodgate 100, a part of the ground area is first evacuated (or hacked) to create a sufficient depth for thefloodgate 100 such that theupper layer 306 of thepanel 102 is level with the surface of the surrounding ground area after thefloodgate 100 is installed. As shown inFIGS. 3-7 ,grout 318 is placed between thefloodgate 100 and the surroundingground area 320. This provides support for thebase frame 108 of thefloodgate 100 so as to minimize the sinking of thefloodgate 100 into the ground over time. Furthermore, a plurality ofanchors 322 are used to anchor thefloodgate 100 to thegrout 318 and the surroundingground area 320. In one example, thegrout 318 comprises make-up cement grout. - When the
floodgate 100 is activated and thepanel 102 is in its opened position, a brace for example, a steel cross brace may be manually propped against thepanel 102 to increase the resistance of thepanel 102 against the hydrostatic and hydrodynamic forces caused by the impact of floodwater or other objects (for example, load in the debris carried by the floodwater). - The
floodgate 100 is configured such that it is activated in response to a signal from a sensor for sensing an imminent flood and deactivated using a key switch control or a reset button at a control panel. The sensor may work by detecting the level of water above the ground in which thefloodgate 100 is installed. Alternatively, thefloodgate 100 may be manually activated by deactivating the locking members using a key switch control or a push button. Thefloodgate 100 may also be activated by manually lifting thepanel 102 against the force exerted by the locking members. - The
floodgate 100 is coupled to a battery backup system (for example a UPS system). This serves to provide backup power to thefloodgate 100 in the event of a power failure (failure of the mains in-coming power supply) which may deactivate the locking members causing thepanel 102 to move from the closed position to the opened position even in the absence of an imminent flood. The battery backup system may be selected to provide backup power for 1 hour, 2 hours, 4 hours, 8 hours or any other number of hours depending on the user's requirements. The locking members are configured such that in the event that thefloodgate 100 is activated when the battery backup system is being used, the locking members will still be deactivated. Thefloodgate system 100 may be further coupled to a drainage system to drain any water that enters the interior of thefloodgate 100. -
FIG. 10( a) and (b) are views of afloodgate 100 b which is a variation of thefloodgate 100, and which is a second embodiment of the invention.FIG. 10( a) illustrates thefloodgate 100 b when thefloodgate 100 b is activated, whereasFIG. 10( b) illustrates thefloodgate 100 b when thefloodgate 100 b is deactivated. Thefloodgate 100 b has a construction very similar to thefloodgate 100, so like elements are given the same reference numerals. In contrast to thefloodgate 100, thefloodgate 100 b has asteel frame 503 supporting asteel plate 501, on which are formed awire mesh 505 and atop layer 507 which may be concrete, tile or stone. Thesteel plate 501 andframe 503 give thefloodgate 100 b additional strength to support a vehicle passing over thefloodgate 100 b when thefloodgate 100 b is deactivated. -
FIG. 11 illustrates perspective views of afloodgate 1000 which is another variation of thefloodgate 100 and which is a third embodiment of the invention.FIG. 11( a) illustrates thefloodgate 1000 when thefloodgate 1000 is activated whereasFIG. 11( b) illustrates thefloodgate 1000 when thefloodgate 1000 is deactivated.FIGS. 12 and 13 respectively illustrate a cross-sectional side view of thefloodgate 1000 when thefloodgate 1000 is deactivated and a cross-sectional side view of thefloodgate 1000 when thefloodgate 1000 is activated. Thefloodgate 1000 is similar to thefloodgate 100 and thus, the same parts will have the same reference numerals with the addition of prime. - The
floodgate 1000 works in the same manner as thefloodgates floodgates floodgate 1000 comprises a plurality of stand-alone locking members in the form of electromagnetic locks 1102 (seeFIGS. 12 and 13 ). Eachelectromagnetic lock 1102 comprises a first part in the form of an armature plate 1102 b and a second part in the form of amagnetic coil 1102 a. Eachelectromagnetic lock 1102 serves the same function as the electromagnetic lock integrated with eachtubular drive 202 in thefloodgate 100. Similarly, eachelectromagnetic lock 1102 is configured to be switchable between a locked state and an unlocked state such that when theelectromagnetic locks 1102 are in the locked state, theelectromagnetic locks 1102 lock thepanel 102′ in the closed position and when theelectromagnetic locks 1102 are in the unlocked state, thepanel 102′ moves from the closed position to the opened position. For eachelectromagnetic lock 1102, the armature plate 1102 b and themagnetic coil 1102 a press against each other in the locked state (as shown inFIG. 12 ) whereas themagnetic coil 1102 a and the armature plate 1102 b are separated from each other in the unlocked state (as shown inFIG. 13 ). - To deactivate the
floodgate 1000, thepanel 102′ is moved from the opened position to the closed position manually. This is performed by exerting a force on thepanel 102′ against the force from the gas struts 104′. Even though thefloodgate 1000 does not comprise tubular drives with centrifugal brakes, the speed at which thepanel 102′ moves from the closed position to the opened position is still controlled due to the dampening mechanism in thegas strut 104′ similar to that in thegas strut 104 as mentioned above. - As shown in
FIGS. 12-13 , thefloodgate 1000 is installed in the same manner as thefloodgate 100 described above. Furthermore, when thefloodgate 1000 is activated and thepanel 102′ is in its opened position, a brace for example, a steel cross brace may be manually propped against thepanel 102′. Thefloodgate 1000 is also configured such that it is activated in the same way as thefloodgates - The following describes an example process of manually activating the
floodgate floodgate - The
floodgate panel floodgate - Upon activation of the manual control unit by for example turning the key switch control or pressing the push button, an audio and visual alarm system is activated to broadcast a warning that the
floodgate floodgate panel gas strut panel - The
floodgate panel floodgate - When the level of water reaches a first threshold, an audio and visual alarm is activated to provide a warning that a flood may occur. A voice sound continuously broadcasts a pre-recorded message while a beacon continuously flashes.
- If the level of water then subsides below the first threshold, the audio and visual warning is discontinued after a predetermined period of time. In this example, a pre-set timer control is used to prevent intermittent activation and deactivation of the audio and visual warning.
- If the level of water continues to rise and reaches a second threshold, the
floodgate floodgate panel panel -
FIGS. 14-17 illustrate floodgate systems with each floodgate system comprising a plurality of floodgates (floodgates 100 and/orfloodgates 100 b, and/or floodgates 1000) in a different configuration. -
FIGS. 14( a) and 14(b) illustrate perspective views of afloodgate system 1300 comprising a plurality offloodgates 1000 a-1000 e arranged along a straight line.FIG. 14( a) illustrates thefloodgate system 1300 when thefloodgate system 1300 is deactivated whereasFIG. 14( b) illustrates thefloodgate system 1300 when thefloodgate system 1300 is activated. -
FIG. 15( a) illustrates a cross-sectional view of a part of thefloodgate system 1300 whereasFIG. 15( b) illustrates magnified views of parts of the cross-sectional view inFIG. 15( a) (see DETAIL D, DETAIL E, DETAIL F). Similar to thefloodgate 100, eachfloodgate 1000 also comprises a plurality of sealing elements. In thefloodgate system 1300, at least one sealing element of eachfloodgate 1000 a-1000 e is configured to overlap with a sealing element of anotherfloodgate 1000 a-1000 e such that a continuous barrier is formed by the panels of thefloodgates 1000 a-1000 e and the overlapping sealing elements. In other words, gaps between the panels of thefloodgates 1000 a-1000 e are closed by the overlapping sealing elements to form a continuous barrier. An example of this is shown inFIG. 15( b) whereby the sealing element 1402e 1 of the floodgate 1000 e overlaps with the sealing element 1402d 2 of the floodgate 1000 d. Furthermore, the sealing element 1402e 2 of the floodgate 1000 e is configured to press against a wall or a vertical post to form a continuous barrier with the panel of the floodgate 1000 e when thefloodgate system 1300 is activated. Spaces such as 1401, 1403 provide internal drainage. -
FIGS. 16( a) and 16(b) illustrate perspective views of afloodgate system 1500 comprising a plurality offloodgates 1000 f-1000 j arranged in a U-shaped manner.FIG. 16( a) illustrates thefloodgate system 1500 when thefloodgate system 1500 is activated whereasFIG. 16( b) illustrates thefloodgate system 1500 when thefloodgate system 1500 is deactivated. In thefloodgate system 1500,floodgates floodgates floodgate system 1500, at least one sealing element of eachfloodgate 1000 f-1000 j is configured to overlap with a sealing element of anotherfloodgate 1000 f-1000 j such that a continuous barrier is formed by the panels of thefloodgates 1000 f-1000 j and the overlapping sealing elements. -
FIGS. 17( a) and 17(b) illustrate perspective views of afloodgate system 1600 comprising a plurality offloodgates 1000 k-1000 o arranged in a faceted manner.FIG. 17( a) illustrates thefloodgate system 1600 when thefloodgate system 1600 is deactivated whereasFIG. 17( b) illustrates thefloodgate system 1600 when thefloodgate system 1600 is activated. In thefloodgate system 1600,floodgates 1000 k-1000 o are arranged in a faceted manner with an angle between each pair offloodgates 1000 k-1000 o being the same. Similarly, in thefloodgate system 1600, at least one sealing element of eachfloodgate 1000 k-1000 o is configured to overlap with a sealing element of anotherfloodgate 1000 k-1000 o such that a continuous barrier is formed by the panels of thefloodgates 1000 k-1000 o and the overlapping sealing elements. - The advantages of the
floodgates - The
floodgates floodgates floodgate electromagnetic locks 1102 in the floodgate 1000). Thepanels floodgates - In the
floodgates panel - In
floodgates gas strut panel panel floodgates tubular drive 202 and this helps to limit the speed at which thepanel 102 moves. This prevents overly abrupt or overly rapid movement of thepanel 102, hence preventing damage to thefloodgates - The
floodgates floodgates floodgates floodgates floodgates - In addition, a floodgate system can be easily constructed using a plurality of floodgates (100, 100 b and/or 1000). As the
floodgates floodgates floodgates - Further variations are possible within the scope of the invention as will be clear to a skilled reader.
- For example, instead of a gas strut, the extendable member may be in the form of a hydraulic pump or a pneumatic pump. However, it is preferable to use a gas strut due to the above-mentioned advantages. In certain embodiments of the invention it is also possible to omit extendable members completely, but if such members are not used to assist in the automatic or assisted opening of the floodgate panel, human intervention will be required to lift the floodgate panel to the opened position, and props will be required to prevent the floodgate panel from closing either by itself or by the force/pressure of the flood water. Note that manually applied props may also used with the embodiments previously described, and the embodiments may be formed with connection elements (e.g. sockets) to receive ends of the props, such that the props are in a configuration (e.g. a sloping “diagonal” configuration) where they hold the floodgate panel in the opened position.
- Furthermore, although
FIGS. 1 to 9 show each floodgate comprising two gas struts, one gas strut may be used or more than two gas struts may be included depending on the force exerted by each gas strut. - Similarly, the number of tubular drives with integrated locking members in the
floodgate wire ropes 312 apply force evenly along the length of the floodgate. - The
floodgate panel - Furthermore, although
FIGS. 3-7 ,FIG. 10( a) andFIGS. 12-13 show thefloodgate floodgates panel panel floodgate floodgate floodgate - In addition, some or all of the
floodgates 1000 a-1000 e, 1000 f-1000j 1000 k-1000 o in thefloodgate systems floodgates 100 and/or 100 b with the sealing elements configured in the same manner. Alternative floodgate systems may be constructed by arranging the floodgates (100, 100 b, 1000 or combinations of them) in different configurations. Furthermore, the panels of the floodgates in a floodgate system may move from their closed positions to their opened positions in different directions. However, regardless of the configuration of the floodgates (100, 100 b, 1000 or combinations of them) or the direction in which the panels move, at least one sealing element of each floodgate is configured to overlap with a sealing element of another floodgate such that a continuous barrier is formed by the panels and the overlapping sealing elements.
Claims (17)
1. A floodgate comprising:
a panel configured to be movable between an opened position and a closed position wherein in the opened position, the panel forms a barrier against flood water; and
at least one extendable member configured to move the panel from the closed position to the opened position wherein the extendable member is a gas strut.
2. The floodgate according to claim 1 , wherein each extendable member comprises a dampening mechanism configured to reduce the rate at which the extendable member moves the panel from a predetermined position to the closed position.
3. The floodgate according to claim 2 , wherein the reduction in the rate at which the extendable member moves the panel is adjustable.
4. The floodgate according to claim 1 , wherein each extendable member is arranged with the panel such that when the panel is in the closed position, a first end of the extendable member lies substantially directly below an end of the panel and a second end of the extendable member opposite the first end lies directly below a point two-thirds of a length of the panel from the end of the panel.
5. The floodgate according to claim 1 , further comprising a plurality of hinges attached to the panel and a plurality of brackets attached to the gas struts, the hinges and brackets being maintained in a constant relative positional relationship by a frame, each hinge and bracket being arranged with the panel such that when the panel moves, a weight of the panel exerted on the hinge is at least partially balanced by an opposing force exerted by the bracket.
6. The floodgate according to claim 1 , further comprising at least one locking member configured to be switchable between a locked state and an unlocked state such that when the at least one locking member is in the locked state, the at least one locking member locks the panel in the closed position and when the at least one locking member is in the unlocked state, the panel moves from the closed position to the opened position.
7. The floodgate according to claim 1 , further comprising at least one rotatable drive arranged with the panel such that rotation of the at least one rotatable drive moves the panel from the opened position to the closed position.
8. The floodgate according to claim 6 , further comprising at least one rotatable drive arranged with the panel such that rotation of the at least one rotatable drive moves the panel from the opened position to the closed position, wherein each locking member is integrally formed with one of the at least one rotatable drive.
9. The floodgate according to claim 7 wherein each rotatable drive further comprises a brake configured to exert a force against the rotation of the rotatable drive when a speed of the rotation exceeds a predetermined threshold.
10. The floodgate according to claim 1 , further comprising a base frame arranged to hold the panel and a seal arranged to press against the base frame when the panel is in the opened position to form a continuous barrier with the panel against floodwater.
11. The floodgate according to claim 1 , wherein the panel is configured to withstand a weight of an automobile over the panel when the panel is in the closed position.
12. The floodgate according to claim 7 , wherein each rotatable drive is configured to exert a force on the panel to move the panel from the opened position to the closed position wherein the force exerted by each rotatable drive at a point a distance away from a first end of the panel is equal to the force exerted by a different rotatable drive at a point the same distance away from a second end of the panel opposite the first end.
13. A floodgate for installation in a location subject to flooding, the floodgate comprising:
a frame for installation at the location,
a panel connected to the frame by at least one hinge, and
at least one connection means for connecting a gas strut to the frame,
the frame being adapted to maintain the relative positions of the hinge and connection means, whereby upon attachment of respective ends of the at least one gas strut to the connection means and to the panel, the frame prevents forces generated by the gas strut from being transmitted to the location.
14. A floodgate comprising:
a panel configured to be movable between an opened position and a closed position about a hinge axis, and
a plurality of sealing elements provided at edges of the panels which are opposite with respect to the direction of the hinge axis,
the sealing elements extending along the edges of the panel, whereby upon locating the panel in the opened position with the edges of the panel in sealing contact with respective other objects, the sealing elements provide respective watertight seals against the other objects.
15. A floodgate system comprising;
a plurality of floodgates according to claim 1 , wherein each floodgate further comprises a plurality of sealing elements; and
wherein at least one sealing element of each floodgate is configured to overlap with a sealing element of another floodgate such that a continuous barrier is formed by the panels and the overlapping sealing elements.
16. A floodgate system comprising:
a plurality of floodgates, each floodgate comprising a panel configured to be movable between an opened position and a closed position, and a plurality of sealing elements;
wherein at least one sealing element of each floodgate is configured to overlap with a sealing element of another floodgate such that a continuous barrier is formed by the panels and the overlapping sealing elements.
17. The floodgate system according to claim 16 , wherein each floodgate comprises:
a panel configured to be movable between an opened position and a closed position wherein in the opened position, the panel forms a barrier against flood water; and
at least one extendable member configured to move the panel from the closed position to the opened position wherein the extendable member is a gas strut.
Applications Claiming Priority (1)
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PCT/SG2010/000376 WO2012047173A1 (en) | 2010-10-04 | 2010-10-04 | A floodgate |
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US20130209173A1 true US20130209173A1 (en) | 2013-08-15 |
Family
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US13/877,622 Abandoned US20130209173A1 (en) | 2010-10-04 | 2010-10-04 | Floodgate |
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EP (1) | EP2625341B8 (en) |
JP (1) | JP5767712B2 (en) |
CN (1) | CN103384745B (en) |
AU (1) | AU2010362000B2 (en) |
SG (1) | SG188667A1 (en) |
TW (1) | TWI554664B (en) |
WO (1) | WO2012047173A1 (en) |
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- 2010-10-04 EP EP10858209.9A patent/EP2625341B8/en active Active
- 2010-10-04 JP JP2013532753A patent/JP5767712B2/en not_active Expired - Fee Related
- 2010-10-04 US US13/877,622 patent/US20130209173A1/en not_active Abandoned
- 2010-10-04 AU AU2010362000A patent/AU2010362000B2/en not_active Ceased
- 2010-10-04 CN CN201080069437.0A patent/CN103384745B/en not_active Expired - Fee Related
- 2010-10-04 SG SG2013024450A patent/SG188667A1/en unknown
- 2010-10-04 WO PCT/SG2010/000376 patent/WO2012047173A1/en active Application Filing
-
2011
- 2011-10-04 TW TW100135876A patent/TWI554664B/en not_active IP Right Cessation
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US9091033B2 (en) * | 2012-01-16 | 2015-07-28 | Hitachi Zosen Corporation | Floating flap gate |
US20140328628A1 (en) * | 2012-01-16 | 2014-11-06 | Hitachi Zosen Corporation | Floating flap gate |
US10435909B2 (en) | 2013-10-06 | 2019-10-08 | Floodbreak, L.L.C. | Flood protection for underground air vents |
US10435906B2 (en) | 2013-10-06 | 2019-10-08 | Floodbreak, L.L.C. | Flood protection for underground air vents |
US10435910B2 (en) | 2013-10-06 | 2019-10-08 | Floodbreak, L.L.C. | Flood protection for underground air vents |
US10435907B2 (en) | 2013-10-06 | 2019-10-08 | Floodbreak, L.L.C. | Flood protection for underground air vents |
US10435908B2 (en) | 2013-10-06 | 2019-10-08 | Floodbreak, L.L.C. | Flood protection for underground air vents |
US10352095B2 (en) | 2014-11-18 | 2019-07-16 | Parafoil Design & Engineering Pte Ltd | Flood barrier |
JP2016118039A (en) * | 2014-12-19 | 2016-06-30 | 株式会社福井鉄工所 | Rising type watertight door device |
US10458083B2 (en) | 2015-02-12 | 2019-10-29 | Rsa Protective Technologies, Llc | Method and system for a rising floodwall system |
US10036133B2 (en) | 2015-02-12 | 2018-07-31 | Rsa Protective Technologies, Llc | Method and system for a rising floodwall system |
US10138611B2 (en) | 2015-08-27 | 2018-11-27 | IRT & Associates, Inc. | Pressure differential open dike equipment and open dike system to limit effects of tide on upstream areas |
WO2017034676A1 (en) * | 2015-08-27 | 2017-03-02 | IRT & Associates, Inc. | Pressure differential open dike equipment |
US10161093B2 (en) | 2016-06-13 | 2018-12-25 | Rsa Protective Technologies, Llc | Method and system for a retractable floodwall system |
US10975538B2 (en) * | 2016-06-13 | 2021-04-13 | Rsa Protective Technologies, Llc | Method and system for a retractable floodwall system |
US10704249B2 (en) * | 2016-08-17 | 2020-07-07 | Art Metal Industries, Llc | Mechanical closure device |
US10934674B2 (en) | 2016-08-17 | 2021-03-02 | Art Metal Industries, Llc | Single bay mechanical closure device |
US20190242085A1 (en) * | 2018-02-08 | 2019-08-08 | Xiaojun Liu | Water conserving gate |
US10604904B2 (en) * | 2018-02-08 | 2020-03-31 | Zhijun Wang | Water conserving gate |
US11112011B1 (en) * | 2018-08-09 | 2021-09-07 | Patrick M. Murphy | Controllably opening water supply line doors |
AU2021203766B1 (en) * | 2021-02-25 | 2022-03-24 | Qingdao university of technology | Hydrodynamic water blocking device for underground garage and method |
WO2023096911A1 (en) * | 2021-11-23 | 2023-06-01 | Floodbreak, L.L.C. | Splice joint |
Also Published As
Publication number | Publication date |
---|---|
TWI554664B (en) | 2016-10-21 |
EP2625341B1 (en) | 2020-04-15 |
JP2013540217A (en) | 2013-10-31 |
CN103384745A (en) | 2013-11-06 |
JP5767712B2 (en) | 2015-08-19 |
EP2625341B8 (en) | 2020-10-07 |
CN103384745B (en) | 2015-11-25 |
EP2625341A4 (en) | 2014-10-29 |
AU2010362000A1 (en) | 2013-05-23 |
SG188667A1 (en) | 2013-05-31 |
WO2012047173A1 (en) | 2012-04-12 |
EP2625341A1 (en) | 2013-08-14 |
TW201226665A (en) | 2012-07-01 |
AU2010362000B2 (en) | 2017-04-27 |
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