Abstract: A restrictor plate assembly is disclosed. The assembly is adapted for being positioned within a catch basin throat so that the throat extends rearward of the assembly. The assembly has a longitudinally extending restrictor plate and a restrictor plate securing system, which includes a first clamp arm, pivotally positioned against the restrictor plate, for engaging a first throat surface of the catch basin; a second clamp arm pivotally positioned against the restrictor plate, for engaging a second throat surface of the catch basin, the second throat surface opposing the first throat surface; and an urging member which simultaneously urges the first and second clamp arms against the first and second throat surfaces, respectively.

Abstract: A flexible, water-permeable filter basket may be used to collect and remove debris from a sump in a drain-entry structure (e.g., a catch-basin). The filter basket includes a basket floor having a perimeter of substantially the same size and shape as a sump floor, at least one basket sidewall corresponding to at least one sump sidewall, and one or more handles collectively affixed to the at least one basket sidewall, the at least one basket sidewall collectively including a resilient frame. The filter basket may be used as a deformable sump insert to collect debris falling into a drain-entry structure for removal without use of a vactor truck.

Abstract: A portable container for use in a sink is described. The sink has predetermined inner dimensions and a sink drain. The sink drain has an inlet with predetermined inner dimensions. The container comprises a bottom, sides, and a top opening. The bottom has a drain. The container bottom is formed with outer dimensions less than the predetermined inner dimensions of the sink such that the container may substantially fit in the sink. The container drain is formed protruding outwardly from the container bottom with an outlet, and, the outlet has outer dimensions less than the predetermined inner dimensions of the sink drain inlet such that the container drain outlet may substantially fit within the sink drain inlet.

Abstract: A fluid strainer device is disclosed. The device includes a housing which defines an open chamber, the chamber having both at least one fluid input port and at least one fluid outlet port. A plurality of spaced strainer baskets are disposed within the chamber. Each basket has a pair of spaced perforated side panels, a perforated rear panel, a perforated top panel and an open front portion in fluid communication with the chamber fluid input port. Finally, each strainer basket is aligned within the chamber for fluid flow from the chamber input port into the basket's open front portion and out through the perforations thereof to filter debris from the fluid while preventing substantial fluid pressure drop between the input and outlet ports substantially independent of debris buildup within the basket.

Abstract: System and apparatus for filtering drainage which includes a configurable and adjustable rigid frame, hanger support structures adapted to contact a surface of a drainage structure, and a sediment bag. The frame may be adjusted or configured by modifying the location of connecting fasteners and/or by altering the orientation of frame components. Additional embodiments provide for an overflow gap comprising a vertical distance between an above grade surface of a drainage structure and the rigid frame, wherein the overflow gap is capable of allowing runoff to bypass the sediment bag when the sediment bag is obstructed. A configurable lifting tool device adapted to lift inlet grates and inlet filter devices includes a lifting bar, a plurality of connectors, a plurality of lifting arms, and a plurality of lifting hooks adapted to contact a grate and/or an inlet filter device lifting bar.

Abstract: A storm water filtration apparatus, at the curb inlet for a storm drain, which prevents debris and pollutants from entering the storm drain system. Water passes through the filter at an upward angle. The filter does not require replacing for maintenance, and it continues to allow water to flow into the storm drain system even when the filter is full of trash, leaves, debris, and/or other pollutants.

Abstract: A storm sewer insert for use in a storm water drainage system includes a collection basin that has an upper inlet opening, a lower outlet opening and at least one overflow bypass opening defined therein. A filter assembly is preferably positioned in the lower opening of the collection basin for filtering storm water that is held in the collection basin. Advantageously, adjustable mounting structure is provided for mounting the collection basin to an inlet opening of a storm sewer or catch basin. In addition, a mosquito barrier is preferably provided for reducing mosquito passage through the bypass opening.

Abstract: Membrane modules, and contactor apparatuses that utilize these modules, comprise a membrane contactor layer and a condenser region and optionally a core. The modules comprise a membrane contactor layer comprising a membrane envelope and a plurality of hollow fiber membranes disposed therein; a feed fluid pathway defined at least in part by lumens of the hollow fibers; and a permeate fluid pathway defined at least in part by an interstitial space between outer surfaces of the hollow fibers and inner surfaces of the membrane envelope.

Abstract: A multi-stage drain filter insert (10) comprises a first basket (14) installed in a drain (D) inlet (I). A second basket (20) fits inside the first basket and is installed therewith for debris in the water flowing into the insert to be collected in a bottom of the second basket. An absorption media in a pouch (26) installed in the second basket for removes hydrocarbons from water flowing into the drain through the insert. A filtration media in a pillow (24) installed in the first basket between the first and second baskets removes contaminants, including bacteria, from water flowing through the second basket into the first basket. As a result, debris and contaminants are substantially removed from water flowing from the insert into the drain.

Abstract: A restrictor plate assembly is disclosed. The assembly is adapted for being positioned within a catch basin throat so that the throat extends rearward of the assembly. The assembly has a longitudinally extending restrictor plate and a restrictor plate securing system, which includes a first clamp arm, pivotally positioned against the restrictor plate, for engaging a first throat surface of the catch basin; a second clamp arm pivotally positioned against the restrictor plate, for engaging a second throat surface of the catch basin, the second throat surface opposing the first throat surface; and an urging member which simultaneously urges the first and second clamp arms against the first and second throat surfaces, respectively.

Abstract: A plate is positioned across an inlet to a catch basin and a filter strainer is inserted through an opening through the plate and into the basin. A tertiary filter completely surrounds the strainer and is suspended below the plate. Surface water flows through a primary grate that covers the catch basin, through the strainer and through the tertiary filter. The tertiary filter comprising fibrous filter media retained in a non-woven mesh fabric enclosure and the filter media is selected according to the type of contaminants that are to be removed.

Abstract: The anti-clogging drainage inlet is adapted for use in lawn or field environments that require drainage systems to prevent flooding or unwanted pooling during periods of rain. The inlet includes a grate mounted to a rectangular frame. The frame and the grate are adapted to be positioned in the opening of a conventional drainage box in a manner that the top surface of the grate is flush with the surface of the lawn or field. A linkage system is mounted to the frame and grate and operates to raise the grate from its flush position. The linkage system includes a container positioned below the grate and within the drainage box.

Abstract: A street curb filter apparatus can be attached to a street curb side adjacent a manhole to collect storm water runoff from the curbside and direct the collected storm water through a filter basket. The street curb filter has a street curb shelf with a water channel on the surface thereof and filter basket supporting arms. The filter basket supporting arms are positioned to receive collected storm water runoff from the water channels in the street curb shelf. The filter basket is shaped to fit into a storm water manhole opening and is removably attached to the street curb shelf filter basket arms to receive storm water runoff from the water channeling surface.

Abstract: The present invention relates to a screen lock-unlock system for automatically locking and unlocking a screen that is within a fluid channel wherein the screen is rotatable relative to the channel from closed to open. The system includes an actuator comprising a flapper and a trigger, wherein the flapper is rotatably connectable to the back of the screen. The flapper is operably connected to the trigger for moving the trigger. And, the system is further summarized, according to one aspect, as follows. It includes a lock bar wherein the lock bar is rotatably attachable to a screen support structure, the lock bar being rotatable by movement of the trigger. The lock bar intercepts the rearward arc path of a blockable part (such as a flange extending laterally from the screen). The flapper is located and oriented with respect to the closed screen for at least part of the flapper to be rotatable in response to pressure from impact fluid.

Abstract: A drain grate filter assembly having a filter sheet member, wedging anchors and mechanical fasteners, whereby the assembly is connected to a drain grate by inserting wedging anchors into the apertures of the grate, placing the filter sheet member atop the grate and inserting fasteners through the filter sheet member and into the wedging anchors.

Abstract: A curb inlet filter is force fit into the throat of a curb inlet to filter debris and sediment from storm water entering an inlet. The device has a filter media affixed to the lower portion of a semi-rigid “C” shaped frame with upper retention flange. The shape and upper flange of the device combine to create a secure compression fit into the receiving inlet. The design includes an overflow feature above the extents of the filter media for heavy storm events. The “C” shape of the filter and placement within the throat of the curb inlet encourages sediment and debris to be captured within the device away from pedestrian and vehicular traffic. The device can easily be removed from the curb inlet while retaining the collected sediment and debris. The captured contaminants can be disposed of by emptying the contents in a designated area.

Abstract: A drain cover portion (100a, 100b) for a linear drainage system which comprises at least two attachment means. The attachment means are provided by at least one a connector attachment means (500) and at least one drain attachment means (700). The connector attachment means (500) is arranged to attach one or more anchor connectors (1002) for connecting an anchor (114) to the drain cover portion (100a, 100b) and/or one or more cover portion connector for connecting said drain cover portion (100a, 100b) to another drain cover portion (100a, 100b). The drain attachment means (700) is arranged to attach a drain portion (200) to the drain cover portion (100a, 100b). Each attachment means is arranged so as to allow the tool-less attachment of a connector/drain section.

Abstract: The invention is a spherical dome consisting of continuous prismatic members in three layers, an outer layer, a middle layer, and an inner layer. The continuous prismatic members follow great circle arcs. The members of the three layers form a three-way grid, crossing at the vertices of contiguous spherical triangles. Three members, one from each layer, are connected together at each vertex with fasteners, such as bolts, rivets, or welds. The continuous prismatic members of each layer can be spaced as desired to provide structural integrity, economy, and simplicity of construction. A tension ring, when required structurally, is provided at the bottom periphery of the dome to resist the vertical and horizontal forces generated by the supported loads. The combined elements provide a simple and economical spherical dome.

Abstract: A storm drain protector with a top layer having a generally horizontal surface in which there is at least one hole that allows water to pass vertically through the surface. The horizontal surface also has several vertical projections emanating from the surface that permit the passage of water over the surface while impeding the passage of debris.

Abstract: A manhole barrier system configured to prevent unauthorized access or dumping or removal of materials into manholes is provided. The manhole barrier system includes a substantially hollow sub-ring configured to be secured to the inside wall of the manhole, preferably using a layer of adhesive, and to receive a pan configured to serve as a barrier therein. The pan may be secured to the sub-ring by way of circumferentially spaced locking assemblies. The locking assemblies are further configured to allow for a limited amount of play between the pan and the sub-ring such that water trapped in the manhole may be allowed to flow upwardly out of the manhole.

Abstract: A drain basin insert having a housing, with the housing having a sidewall having a top edge and a bottom edge, and with the housing having a perforated base member secured to the sidewall at the lower edge of the sidewall, and with the housing having an outwardly extending flange at the top edge of the sidewall. The insert also includes a secondary filter means having a permeable container having hydrophobic filter media therein. The insert also has a perforated, rigid structural member having a bottom wall and a raised portion, with the raised portion attached to the bottom wall and extending upwardly therefrom. The insert also has a primary filter means having an outer sidewall, a bottom surface, and a central portion, with the bottom surface contacting the bottom wall of the perforated structural member, and with the central portion contacting the raised portion of the perforated structural member.

Abstract: An apparatus for reducing pollution in wastewater that collects in a catch basin is disclosed. The apparatus includes a hood affixed to an interior wall of a catch basin over an outlet, and a skirted boom adjacent to at least a portion of said hood and fixed relative to the hood. The skirted boom includes an upper portion and a skirt extending down from the upper portion. The skirted boom is installed so that the upper portion of the skirted boom is adjacent to said hood at the static water level in the catch basin and the skirt extends downward, preferably below the bottom of the hood. A tether assembly for installing the apparatus and a method of using the same is further disclosed.

Abstract: A debris cage is disclosed. The debris cage may include multiple panels, each having a plurality of opening. Each of the panels may be fastened together to form an enclosed structure having a substantially cylindrical portion integral with a conical or dome-like portion at a terminating end of the enclosed structure. Each of the panels may have various shaped openings facilitating the flow of fluid while potentially impeding debris from passing through the debris cage.

Abstract: Device inserted into a drain so that the top surface of the device is positioned and supported at the drain surface by means of a flange at the top surface of the device and sealing the drain by means of a gasket between the flange and the drain perimeter surface. Waste water, referred to as “gray water”, directed to the drain enters the device by passing first through a thin horizontal plate perforated with numerous small holes to remove hair and debris and then passes through larger openings in the surface plate directly beneath the hair and debris guard. The water accumulates in the collection chamber and is extracted through means of a pick-up tube within the collection chamber having a fitting extending through the top of the device for connection to a fluid conduit attached to a suction pump. The extracted gray water is diverted or stored for reuse.

Abstract: An underdrain apparatus includes one or more underdrain blocks and an anchor assembly that includes one or more support members. Each of the underdrain blocks includes a top wall, a bottom wall, a pair of opposing side walls, a pair of opposing end walls, and a center separation wall that extends between the pair of opposing end walls. The center separation wall of at least one of the underdrain blocks may have one or more apertures formed therein, the apertures configured to receive at least one of the support members. One or more of the side walls of the pair of opposing side walls of the underdrain blocks may have one or more side clips. At least one of the side clips defines an aperture for receiving a support member.

Abstract: A storm water filtration apparatus, at the curb inlet for a storm drain, which prevents debris and pollutants from entering the storm drain system. Water passes through the filter at an upward angle. The filter does not require replacing for maintenance, and it continues to allow water to flow into the storm drain system even when the filter is full of trash, leaves, debris, and/or other pollutants.

Abstract: A uniquely designed drain cover for swimming pools, spas, whirlpools and the like that is non-flat and clover shaped containing three or more “leaves” that provides for strengthened rigidity, increased protection against hair and body entrapment and that is connected to the sump through ribs that run across the body of the drain cover that allow for securing the drain cover to the sump through these ribs in addition to the perimeter providing for greater anti-deflection properties and anti-vortexing properties. Apertures found on the surface of the cover and along the perimeter add to the anti-deflection and anti-vortexing properties of the cover.

Abstract: Drain trap assembly for separating sediment from discharged wastewater including a conduit with a first upper inlet portion and a second upper outlet portion. Between the inlet and outlet is located a lower bend portion. Interrupting the lower bend portion is a third conduit portion including a cup closure for sediment accumulation out of the wastewater pathway. Affixed to the cup closure and extending generally upwardly within the assembly and across the wastewater flow is a strainer including at least one plate with through-holes sized to reject particulate sediment and other solids of a predetermined size. Another strainer embodiment includes fibers affixed to the closure and extending across the wastewater flow. A strainer support leg may be concave to guide or deflect sediment-laden wastewater downwardly to the accumulation area and may include at least one wastewater flow aperture. Closure removal automatically withdraws the strainer, offering ready access to accumulated sediment.

Abstract: A flooring system for intercepting debris including at least a plurality of floor tiles with a perforated top surface providing on a top of the plurality of tube frames for intercepting the debris. Each plurality of floor tiles may include a plurality of tube frames in side by side relationship to form a distributed suction area for fluid entrance into tile interiors and for debris interception and capture. The tile interiors of the flooring system may also provide a distributed flow path for fluid flow to a transition plenum. The flooring system may also include a transition plenum for directing a flow path of the fluid from the tiles to a sump, wherein the pumps take suction.

Abstract: A drain support plate for mounting and securing a drain assembly to a deck in a building structure.

Abstract: A disposable ultra-thin drain strainer is removably received within a drain opening of a sink, shower or bathtub having an adjacent drain rim substrate. The strainer has a strainer portion, a ring portion, and has a thickness no greater than 0.091 cm (0.036 inch) for disposability. In another embodiment the strainer includes a seal release mechanism. Top and bottom surfaces of the ring portion are adapted to sealingly engage the drain rim substrate. The disposable drain strainer is preferably composed of a biodegradable or environmentally friendly material. The ultra-thin strainer may be composed of a variety of materials, including fiber materials, polymeric materials, starch, sugarcane, or water-insoluble edible film. The strainer is composed of a material soluble in water, and preferably includes a water-insoluble edible film coating. Owing to its thin nature, the disposable drain strainer is appointed to be disposed after use, so that the user does not have to clean the strainer.

Abstract: A disposable drain strainer for a pop-up and basin drain includes a top opening to accommodate the upward position of the pop-up drain stopper during drainage of the basin/sink or bathtub. The disposable drain strainer has a strainer portion, a ring portion, and at least one adjustable leg. The strainer portion comprises strainer walls abutting a strainer top shelf having a top opening. At least the strainer walls include a plurality of apertures for drainage. The top opening is appointed to engage and receive a pop-up drain stopper when the stopper is in an opened position as during draining. The ring portion fixedly attached to the strainer walls of the strainer portion. At least one adjustable leg is provided arranged adjacent to the top opening and being appointed to engage with the stopper when the stopper is in the opened position.

Abstract: An above-curb emitter for directing water away from a landscaped area having a curb or other obstruction at the edge thereof in a manner that prevents water from pooling on the landscaped area. The emitter comprises a body member having an inlet at the bottom end thereof, one or more sidewalls extending upward from the inlet, a protruding section extending outward from the sidewalls, an outlet at the distal end of the protruding section and a top wall. The sidewalls and top wall are closed to direct water out the outlet. The protruding section is generally perpendicular to the axis of the inlet and extends over the top of the curb to direct water into a gutter or the like. An insert section, preferably made out of plastic, is sized to be received in a drainage system riser. The upper portion of the body member can be rubber.

Abstract: A first filter basket (20) sits down into a catch basin (10) and has an upper flange (24) that rests on a shoulder (14) provided in the catch basin (10) for supporting a grate (16). The filter basket (20) has expanded metal side and bottom walls which are adapted to pass liquid and catch particulate material larger in size than the wall openings. A geo-textile liner (42) is optionally positioned inside of the filter basket (20). The liner (42) is supported on a lower rim flange (26). Posts (40) on the rim flange (26) extend upwardly through openings (66) in marginal portions of the liner (42). A smaller second filter basket (72) is optionally supported inside the larger first filter basket (20). An absorbent pillow (90) may be positioned between the bottoms of the two filter baskets (20, 72) to catch and absorb oils and greases that are in the liquid that enters the catch basin (10).

Abstract: A uniquely designed drain cover for swimming pools, spas, whirlpools and the like that is non-flat and clover shaped containing three or more “leaves” that provides for strengthened rigidity, increased protection against hair and body entrapment and that is connected to the sump through ribs that run across the body of the drain cover that allow for securing the drain cover to the sump through these ribs in addition to the perimeter providing for greater anti-deflection properties and anti-vortexing properties. Apertures found on the surface of the cover and along the perimeter add to the anti-deflection and anti-vortexing properties of the cover.

Abstract: A modular filter system for use within a pollution removal structure. The system includes a plurality of modular filters that can be nested together forming a common passageway that passes through all of the nested filters. With normal runoff, the water passes laterally through the filters and enters the common passageway to exit the structure. In the event of a high flow of runoff, an overflow pipe conveys water directly to a downstream storm drain by-passing the filter system. The overflow is created by either: a) allowing the water to rise above the upper surface of the upper modular filter and directly into the common passageway or b) by overflow pipes which connect to a downstream pollution removal structure; or a combination of paths a) and b). By using nested filters, the number of filters nested together can be customized in accordance with the depth of the particular storm drain.

Abstract: A floor drain system 10 having a grating frame 34 for accommodating a drain grating 12, an equalizing pipe 38 on which the grating frame 34 is held and which is disposed height-adjustably on a further component of the floor drain system 10 in order to equalize a floor covering thickness, and an odor trap 18, the equalizing pipe 38 and/or the grating frame 34 being designed such that the odor trap 18 can be fixed onto the latter.

Abstract: A foam insert for a rain gutter for a residential dwelling is provided. The foam insert prevents debris such as leaves, pine needles, gravel, and dirt from entering the rain gutter and permits water to pass through the foam and into the gutter. The foam insert has a channel in the outer side to receive the inwardly projecting lip of a gutter when the foam insert is placed into the gutter. As the foam inserts are installed in the gutter, the lip of the gutter is positioned within the channel. The foam is flexible, which permits the foam insert to be bent and maneuvered into position within the gutter. The foam inserts are formed with a pore size of 14 ppi or below. The foam inserts are inexpensive and may be quickly and easily installed or removed from the gutter by a single individual.

Abstract: A disposable drain strainer is removably received within a drain opening having an adjacent drain rim substrate. The strainer has a strainer portion, a ring portion, and a seal release mechanism. Top and bottom surfaces of the ring portion are adapted to sealingly engage the drain rim substrate. The seal release mechanism is integral with the ring portion, and facilitates release of the seal so that the strainer can be readily be removed from the sink and discarded. In one embodiment, the seal release mechanism comprises a tab. In another embodiment, the seal release mechanism comprises a press-release component, wherein the ring portion has arced ring walls having convex and concave configurations. During sealing engagement with the drain rim, the ring portion is in the convex configuration. Pressure applied to the ring portion causes it to move to the concave configuration.

Abstract: An exemplary embodiment providing one or more improvements includes an assembly which fixes and supports a floor drain at the appropriate position before a concrete floor is poured. The assembly is adjustable for floors of varying thickness. The lower or second end of the drain pipe is protected against contamination by wet concrete by a resilient disk. In addition a cavity on the bottom of the floor concentric with the drain pipe is formed. After the concrete floor has hardened and the form removed the resilient disk is removed exposing a clean uncontaminated drain pipe end for connection to a riser pipe.

Abstract: An automatic cleaning drain structure includes a cover member, a base, a fan blades set and an object expeller set. The fan blades set is installed interior of a holding space of the base A wind power device extends from the object expeller set, and functional connection of the bearing between the fan blades set and the wind power device is used to effect rotation thereof, Accordingly, when a water flow flows past the fan blades set or the wind power device is blown by the force of wind, then a plurality of strip members of the object expeller set and a plurality of strip members of the wind power device rotate around the cover member about the bearing as center, thereby enabling the drain to achieve the objective of clearing away foreign objects to allow unimpeded water flow.

Abstract: To facilitate cleaning and to facilitate management thereof, a dust-removal managing pit is provided with an upper pit having a bottom and to which an inflow pipe is connected and a cylindrical lower vertical pit having its upper part connected to the upper pit for supplying water flowing down from an upper-end opening portion to a water storage tank. The upper end of the lower vertical pit is provided penetrating a bottom wall of the upper pit, while a peripheral wall of the upper pit is provided so as to surround the upper end of the lower vertical pit, and a peripheral groove for precipitating solid substances contained in water is formed between the periphery of the upper end of the lower vertical pit and the peripheral wall. A mesh plate constituted capable of filtering water leading to the peripheral groove is provided on the upper pit. One end of a drain pipe with the other end connected to a sewer pipe is connected to the peripheral wall, and an adjusting valve is provided in the drain pipe.

Abstract: A filter assembly (10) for a floor drain including a strainer (11) adapted to be located in the floor drain and a filter basket (13) detachably secured to the strainer (11) on the underside thereof to extend into the floor drain to filter liquid passing through the strainer (11). The strainer (11) includes an upper set of slots (19) and a lower set of slots (18) and may be secured to the strainer (11) by a fastener (29) or frictionally engaged with the strainer (11).

Abstract: A protection device for a side entry pit, device having a frame to clamp to the exposed edge of the cover of the pit, and a screen of chains attached to the frame and extending beneath the opening of the pit to prevent trash from entering the pit. The protection device also includes a screen to prevent debris such as dirt and gravel entering the pit, the device including a wire mesh supporting a material such as filter foam to prevent the debris entering the pit, while permitting the passage of water therethrough.

Abstract: Floor drain with water trap including an upper screen (19) or lip and a lower screen or threshold (32) extending to a higher level (29) than the lower edge of the upper screen, and that the water first flow below the upper screen and thereafter over the lower screen. The inlet part before the upper screen has a small cross-section or volume in relation to the water volume between the upper and the lower screen securing an efficient flushing away of light pollutions.

Abstract: A drain cover and pipe combination comprises a drain cover including a substantially elliptical frame portion defining a space, the space having an axis substantially normal to the frame, and at least one cross piece located in the space so as to define a plurality of openings in the drain cover. The pipe comprises a substantially tubular member having a longitudinal axis, with the pipe having a substantially elliptical shaped rim at one end thereof with a rim axis which is other than parallel to the longitudinal axis of the tubular member. Securing means are provided for securing the drain cover over the rim of the pipe.

Abstract: System and apparatus for filtering drainage which includes a configurable and adjustable rigid frame, hanger support structures adapted to contact a surface of a drainage structure, and a sediment bag. The frame may be adjusted or configured by modifying the location of connecting fasteners and/or by altering the orientation of frame components. Additional embodiments provide for an overflow gap comprising a vertical distance between an above grade surface of a drainage structure and the rigid frame, wherein the overflow gap is capable of allowing runoff to bypass the sediment bag when the sediment bag is obstructed. A configurable lifting tool device adapted to lift inlet grates and inlet filter devices includes a lifting bar, a plurality of connectors, a plurality of lifting arms, and a plurality of lifting hooks adapted to contact a grate and/or an inlet filter device lifting bar.

Abstract: A debris cage is disclosed. The debris cage may include multiple panels, each having a plurality of opening. Each of the panels may be fastened together to form an enclosed structure having a substantially cylindrical portion integral with a conical or dome-like portion at a terminating end of the enclosed structure. Each of the panels may have various shaped openings facilitating the flow of fluid while potentially impeding debris from passing through the debris cage.

Abstract: Disclosed herein is a soil inflow prevention apparatus in which an angular-rotation opening/closing plate is adapted to be inclined within a predetermined angle by virtue of opening stoppers to prevent a rear portion of the opening/closing plate from being excessively lowered in the beginning that an inflow amount of sewage increases due to rainfall, thereby preventing soil from entering an intercepting sewer in the beginning of an inflow of sewage.

Abstract: The objective of this invention is to filter storm water that drains into catch basins and drain inlets by trapping sediment and preventing sizeable objects from flowing into storm drain systems. The device can be made of durable material and with a removable inner filter it can cleaned and reused. This device can also be made in a verity of diameter sizes and geometric shapes to accommodate various types of applications.