US20050247612A1 - Silt and debris filtering system for storm drains - Google Patents

Silt and debris filtering system for storm drains Download PDF

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US20050247612A1
US20050247612A1 US11/110,649 US11064905A US2005247612A1 US 20050247612 A1 US20050247612 A1 US 20050247612A1 US 11064905 A US11064905 A US 11064905A US 2005247612 A1 US2005247612 A1 US 2005247612A1
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frame
filter
major
sidewalls
water
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Robert Glassheim
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401Gullies for use in roads or pavements
    • E03F5/0404Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F1/00Methods, systems, or installations for draining-off sewage or storm water

Definitions

  • the present invention generally relates to a storm drain filter system for filtering water flowing into a storm drain.
  • Filtering systems useful for storm drains generally prevent silt and other debris (e.g., dirt, gravel, tree leaves, street trash, etc.) from entering the storm drain and sewer system. Silt and other debris entering the storm drains along with rainwater and other surface water run-offs may clog the storm sewers and cause street flooding and/or damage to water treatment facilities that treat the water from storm sewers. Such problems may be exaggerated and commonly found in many construction sites or similar locations.
  • silt and other debris e.g., dirt, gravel, tree leaves, street trash, etc.
  • the filter system of the present invention is provided with filter units that are easily removed from the storm drains for cleaning or replacement.
  • An apparatus for removing debris from water passing through a storm drain comprises a frame adapted to be positioned underneath a storm grate for receiving the water, the frame having a bottom side and major and minor sidewalls, the major sidewalls having openings therein for allowing water to pass; and a filter removably insertable along at least a portion of the major sidewalls for filtering debris from the water.
  • FIG. 1A illustrates a side view along a major side of a storm drain filter system according to an embodiment of the present invention
  • FIG. 1B illustrates a top view of the storm drain filter system of FIG. 1A ;
  • FIG. 1C illustrates a cross sectional view along a minor side of the storm drain filter system taken along line A-A of FIG. 1B ;
  • FIG. 2A illustrates another side view along a major side of a storm drain filter system and including filter, attachment and support structures for the system according to an embodiment of the present invention
  • FIG. 2B is a schematic illustration of a support structure for the storm drain filter system according to an embodiment of the present invention.
  • FIG. 3A illustrates a side view of a filter structure for the storm drain filter system according to an embodiment of the presents invention
  • FIG. 3B is a schematic top view of a support structure for the filter structure the storm drain filter system according to another embodiment of the present invention.
  • FIG. 4 illustrates an exploded view of various components associated with the filter system according to an embodiment of the present invention
  • FIG. 5 illustrates a more detailed top view of the frame structure of FIG. 4 according to another embodiment of the present invention.
  • FIGS. 6 and 7 illustrate more detailed views of the major and minor sides, respectively, of the frame structure of FIG. 4 .
  • the storm drain filtering system generally comprises a frame 100 configured and dimensioned to be positioned underneath a storm drain grate 400 and one or more modular filter screen units that are removable from the frame for cleaning and/or replacement.
  • the frame 100 is a rectangular box-like structure having a solid bottom side and four side walls comprising two shorter minor sides ( 120 , 130 ) and two longer major sides ( 140 , 150 ).
  • the two minor sides oppose each other and the two major sides oppose each other.
  • the side walls may be grated.
  • the minor sidewalls are solid and the two major side walls are grated.
  • the grating structure of the sidewalls may be varied in size and shape to accommodate the particular filtering needs of a given application or an installation site for the storm drain filtering system.
  • the grate openings 160 on the major side walls are provided with different sizes to accommodate the different static pressures encountered by the frame and the filter screen 190 ( FIG. 2A ) at different portions along the side walls.
  • the top side 170 of the frame is open to let the water flow into the frame.
  • the top edge (or lip) 172 of the frame may be configured and adapted to be supported by or hang from supporting structures that may be mounted into the wall of the catch basin of the storm drain below the storm grate.
  • the supporting structures may be ledges or hooks.
  • the supporting structures are ledges formed by stainless steel angle irons that are drilled and mounted into the wall of the catch basin by bolts or other suitable hardware.
  • the supporting structures may be hooks as illustrated in FIG. 2B .
  • the top edge (or lip) of the frame may be provided with a flange portion 174 that may hang from the supporting structures, whether the supporting structures may be ledges or hooks.
  • One or more handle(s) 176 having an appropriate shape may be provided along the top edge (or lip) of the frame for ease of handling the frame during installation of or removal of the storm drain filter system.
  • the handles are formed as holes provided near the top edge of the frame.
  • the side walls of the frame may be tapered so that the frame is wider at the top than the bottom.
  • FIG. 1 C which is a cross-sectional view of the frame through line A-A in FIG. 1B
  • the solid bottom side of the frame has a central ridge 180 that is raised along the longitudinal axis of the frame so that the solid bottom side is pitched downwardly from the central ridge toward the two major sides walls 140 , 150 .
  • This configuration assists the water flowing into the frame to flow outwardly towards the major side walls to where the modular filter screens 190 are and out of the frame, thereby preventing unwanted collection of water in the frame.
  • the solid minor side walls may be provided with one or more overflow holes 191 near the top to allow water to overflow, in the event that the filter system is filled with filtered debris and/or silt.
  • the major side walls of the frame may be provided with one or more side drain holes 197 along the bottom edge as shown in FIG. 1A .
  • All or most of the components of the storm drain filtering system according to the present invention may be made of a variety of materials appropriate for such application.
  • the components, including the frame and the modular filter screen units may be made from appropriate gauge and grade of stainless steel that provides appropriate structural strength, durability and corrosion resistance.
  • An example of such material is 304 stainless steel.
  • the filter system of the present invention also includes modular filter screens 190 , one for each of the grated major side walls.
  • the modular filter screens are mounted up against each of the two major side walls from inside the frame and filters silts and other debris from the water that flows into the top of the frame and out through the major side walls.
  • the modular filter screens may be a mesh or perforated sheet of some appropriate material.
  • the modular filter screens are made from perforated stainless steel sheets of an appropriate gauge that can withstand the structural demand of retaining silts and other debris that are being collected inside the frame and the pressure of the flowing water through the filter screens.
  • 16 gauge grade 304 stainless steel that is perforated with 1 ⁇ 8′′ diameter holes on 3 ⁇ 8′′ centers, staggered, may be used for the filter screens.
  • the diameter and the spacing of the perforation and the gauge of the stainless steel sheet may be varied accordingly.
  • the perforation also may be any appropriate shape other than circular holes.
  • the density of the perforations on the filter screens may be uniform throughout a given screen or, if necessary, the density of the perforations may vary across the height and width of the filter screen.
  • the perforations near the bottom end of the filter screen may have smaller and denser holes to filter silts and other debris having finer particle size.
  • the perforations near the top end of the filter screen may have larger and less densely populated holes to filter and collect larger particle size debris.
  • FIG. 3A An example of a modular filter screen unit 190 is illustrated in FIG. 3A .
  • the outline shape of the modular filter screen unit preferably matches the shape of the major side walls of the frame 100 .
  • the modular filter screen unit may be constructed to have a frame portion supporting the perforated stainless steel sheets.
  • the frame portion of the modular filter screen unit may be configured like a picture frame with one central opening or may be configured with one or more cross-members 194 that divide the central opening into two or more screen sections 195 .
  • Such cross-members may provide further structural support for the filter screen to prevent the filter screen from blowing out from the water pressure or the pressure exerted by the silts and debris collecting inside the frame.
  • the modular filter screen units are preferably provided with one or more handles 196 for ease of retrieval from the frame of the filtering system in the field.
  • the frame of the filter system may not need the grating structure for the major side walls.
  • the major side walls of the frame may be just a big opening.
  • the modular filter screen units may be configured and dimensioned to slidingly engage the frame.
  • the frame is provided with channels 200 along the side edges of the two major side walls along their inside surface.
  • the channels preferably extend substantially the full height of the frame.
  • the channels may also be embodied as clips or other fastening and/or guiding mechanisms.
  • the side edges of the modular filter screen units 190 are configured and dimensioned to engage the channels 200 of frame 100 by sliding into the channel from the top.
  • FIG. 3B is a top down view of one of the channels of the frame with a modular filter screen unit 190 glidingly engaged within the channel.
  • the storm drain grate is lifted up or tilted up from its normal resting position exposing the storm drain opening.
  • suitable supporting structure(s) 300 illustrated in FIG. 2A or 2 B are installed into the wall of the catch basin 315 .
  • Such supporting structures include an L or U-shaped support having a first end for mounting (e.g. via bolts) to the wall and a second end mountable to the frame.
  • the frame of the filtering system is then dropped into the storm drain opening such that the flange portion along the top edge of the frame rests on the supporting structure(s).
  • Appropriate modular filter screen units are then installed, one on each side of the major side walls of the frame by sliding the modular filter screen units into the channels of the frame.
  • FIG. 4 illustrates an exploded view of various components associated with the filter system according to another embodiment of the present invention.
  • a frame structure 100 ′ has a T-shaped support defined by a horizontal top edge bar member 108 extending between and coupled to opposite minor side walls 120 , 130 , and a single support arm 105 extending between and coupled to top edge bar member 108 and bottom 110 .
  • Single support are 105 is disposed on each of the major sidewalls for supporting the structure.
  • a removable mesh screen 187 and/or modular filter screen unit 190 is insertable into channels along the major sidewalls of the frame.
  • a stainless steel wire mesh screen e.g. a 200 mesh count per inch or 0.0029 inch width opening
  • a 1.5 inch thick replaceable filter for collecting debris including petroleum hydrocarbons is provided.
  • the bottom surface 110 is flat and preferably formed of solid stainless steel.
  • a hood 210 having inwardly tapered side panels 212 may be coupled onto the top opening of frame 100 ′ for funneling the matter from the storm gate or drain into the structure.
  • the structure may be formed of 304 stainless steel, including the screen and filter units.
  • FIG. 5 illustrates a top view of frame structure 100 ′ illustrated in FIG. 4
  • FIGS. 6 and 7 illustrate major and minor side views of frame structure 100 ′, respectively.
  • the dimensions provided are exemplary.
  • channels 205 and 210 removably accommodate filter unit 190 and mesh screen 187 to provide for debris filtering.
  • the filter and screen may each be separately removable in a vertical fashion independent of one another. While both filter unit and screen are illustrated in the embodiment depicted, it is understood that either or both filter mechanisms may be incorporated into the frame structure.
  • FIG. 6 illustrates a more detailed major side view of the frame structure 100 ′ having bar members 105 and 108 in a T-shaped arrangement for supporting the major sidewalls.
  • Flange 174 enables hanging the structure as discussed with respect to FIG. 1A .
  • FIG. 7 illustrates a more detailed minor side view of the frame structure 100 ′ wherein angled slots 191 provide for overflow.
  • the structure further includes stiffener channels 199 disposed on the bottom surface as shown in FIG. 7 for providing additional support.
  • each of the modular filter screens also may be temporarily removed for cleaning. Because the components of the filter system, including the modular filter screen units are made of stainless steel, they are corrosion resistant and should be reused without being replaced for a long time.

Abstract

An apparatus for removing debris from water passing through a storm drain comprises a frame adapted to be positioned underneath a storm grate for receiving the water, the frame having a bottom side and major and minor sidewalls, the major sidewalls having openings therein for allowing water to pass; and a filter removably insertable along at least a portion of the major sidewalls for filtering debris from the water.

Description

    RELATED APPLICATION
  • This application claims priority of U.S. Patent Application Ser. No. 60/563,736, entitled Silt And Debris Filtering System For Storm Drains, filed Apr. 20, 2004, the entire disclosure of which is hereby incorporated by reference as if being set forth in its entirety herein.
  • FIELD OF THE INVENTION
  • The present invention generally relates to a storm drain filter system for filtering water flowing into a storm drain.
  • BACKGROUND OF THE INVENTION
  • Filtering systems useful for storm drains generally prevent silt and other debris (e.g., dirt, gravel, tree leaves, street trash, etc.) from entering the storm drain and sewer system. Silt and other debris entering the storm drains along with rainwater and other surface water run-offs may clog the storm sewers and cause street flooding and/or damage to water treatment facilities that treat the water from storm sewers. Such problems may be exaggerated and commonly found in many construction sites or similar locations.
  • To prevent such problems, the inventor has invented a novel silt and debris filtering system for storm drains that is simple to install and easy to maintain. The filter system of the present invention is provided with filter units that are easily removed from the storm drains for cleaning or replacement.
  • SUMMARY OF THE INVENTION
  • An apparatus for removing debris from water passing through a storm drain comprises a frame adapted to be positioned underneath a storm grate for receiving the water, the frame having a bottom side and major and minor sidewalls, the major sidewalls having openings therein for allowing water to pass; and a filter removably insertable along at least a portion of the major sidewalls for filtering debris from the water.
  • BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1A illustrates a side view along a major side of a storm drain filter system according to an embodiment of the present invention;
  • FIG. 1B illustrates a top view of the storm drain filter system of FIG. 1A;
  • FIG. 1C illustrates a cross sectional view along a minor side of the storm drain filter system taken along line A-A of FIG. 1B;
  • FIG. 2A illustrates another side view along a major side of a storm drain filter system and including filter, attachment and support structures for the system according to an embodiment of the present invention;
  • FIG. 2B is a schematic illustration of a support structure for the storm drain filter system according to an embodiment of the present invention;
  • FIG. 3A illustrates a side view of a filter structure for the storm drain filter system according to an embodiment of the presents invention;
  • FIG. 3B is a schematic top view of a support structure for the filter structure the storm drain filter system according to another embodiment of the present invention;
  • FIG. 4 illustrates an exploded view of various components associated with the filter system according to an embodiment of the present invention;
  • FIG. 5 illustrates a more detailed top view of the frame structure of FIG. 4 according to another embodiment of the present invention; and
  • FIGS. 6 and 7 illustrate more detailed views of the major and minor sides, respectively, of the frame structure of FIG. 4.
  • DETAILED DESCRIPTION OF THE INVENTION
  • In accordance with an aspect of the present invention, and referring generally to FIGS. 1 and 2, the storm drain filtering system generally comprises a frame 100 configured and dimensioned to be positioned underneath a storm drain grate 400 and one or more modular filter screen units that are removable from the frame for cleaning and/or replacement.
  • In an exemplary configuration, the frame 100 is a rectangular box-like structure having a solid bottom side and four side walls comprising two shorter minor sides (120, 130) and two longer major sides (140, 150). The two minor sides oppose each other and the two major sides oppose each other. The side walls may be grated. In a preferred embodiment of the present invention, the minor sidewalls are solid and the two major side walls are grated. The grating structure of the sidewalls may be varied in size and shape to accommodate the particular filtering needs of a given application or an installation site for the storm drain filtering system. In the attached FIG. 1A, the grate openings 160 on the major side walls are provided with different sizes to accommodate the different static pressures encountered by the frame and the filter screen 190 (FIG. 2A) at different portions along the side walls.
  • The top side 170 of the frame is open to let the water flow into the frame. The top edge (or lip) 172 of the frame may be configured and adapted to be supported by or hang from supporting structures that may be mounted into the wall of the catch basin of the storm drain below the storm grate. The supporting structures may be ledges or hooks. In an embodiment of the present invention illustrated in FIG. 2A, the supporting structures are ledges formed by stainless steel angle irons that are drilled and mounted into the wall of the catch basin by bolts or other suitable hardware. In another embodiment of the present invention, the supporting structures may be hooks as illustrated in FIG. 2B.
  • The top edge (or lip) of the frame may be provided with a flange portion 174 that may hang from the supporting structures, whether the supporting structures may be ledges or hooks. One or more handle(s) 176 having an appropriate shape may be provided along the top edge (or lip) of the frame for ease of handling the frame during installation of or removal of the storm drain filter system. In the example of a frame illustrated in FIG. 1A, the handles are formed as holes provided near the top edge of the frame.
  • As illustrated in FIGS. 1 and 2, the side walls of the frame may be tapered so that the frame is wider at the top than the bottom. As illustrated in FIG. 1 C, which is a cross-sectional view of the frame through line A-A in FIG. 1B, the solid bottom side of the frame has a central ridge 180 that is raised along the longitudinal axis of the frame so that the solid bottom side is pitched downwardly from the central ridge toward the two major sides walls 140, 150. This configuration assists the water flowing into the frame to flow outwardly towards the major side walls to where the modular filter screens 190 are and out of the frame, thereby preventing unwanted collection of water in the frame.
  • As illustrated in FIG. 1 C, the solid minor side walls may be provided with one or more overflow holes 191 near the top to allow water to overflow, in the event that the filter system is filled with filtered debris and/or silt.
  • The major side walls of the frame may be provided with one or more side drain holes 197 along the bottom edge as shown in FIG. 1A.
  • All or most of the components of the storm drain filtering system according to the present invention may be made of a variety of materials appropriate for such application. Preferably, the components, including the frame and the modular filter screen units may be made from appropriate gauge and grade of stainless steel that provides appropriate structural strength, durability and corrosion resistance. An example of such material is 304 stainless steel.
  • The filter system of the present invention also includes modular filter screens 190, one for each of the grated major side walls. The modular filter screens are mounted up against each of the two major side walls from inside the frame and filters silts and other debris from the water that flows into the top of the frame and out through the major side walls.
  • The modular filter screens may be a mesh or perforated sheet of some appropriate material. Preferably, the modular filter screens are made from perforated stainless steel sheets of an appropriate gauge that can withstand the structural demand of retaining silts and other debris that are being collected inside the frame and the pressure of the flowing water through the filter screens. In one embodiment of the present invention, 16 gauge grade 304 stainless steel that is perforated with ⅛″ diameter holes on ⅜″ centers, staggered, may be used for the filter screens. Depending on the range of the particle size of the debris to be filtered and collected by the filtering system, the diameter and the spacing of the perforation and the gauge of the stainless steel sheet may be varied accordingly. The perforation also may be any appropriate shape other than circular holes. The density of the perforations on the filter screens may be uniform throughout a given screen or, if necessary, the density of the perforations may vary across the height and width of the filter screen. For example, the perforations near the bottom end of the filter screen may have smaller and denser holes to filter silts and other debris having finer particle size. The perforations near the top end of the filter screen may have larger and less densely populated holes to filter and collect larger particle size debris.
  • An example of a modular filter screen unit 190 is illustrated in FIG. 3A. The outline shape of the modular filter screen unit preferably matches the shape of the major side walls of the frame 100. The modular filter screen unit may be constructed to have a frame portion supporting the perforated stainless steel sheets. The frame portion of the modular filter screen unit may be configured like a picture frame with one central opening or may be configured with one or more cross-members 194 that divide the central opening into two or more screen sections 195. Such cross-members may provide further structural support for the filter screen to prevent the filter screen from blowing out from the water pressure or the pressure exerted by the silts and debris collecting inside the frame. The modular filter screen units are preferably provided with one or more handles 196 for ease of retrieval from the frame of the filtering system in the field.
  • If the cross-members of the modular filter screen units are sufficiently strong, the frame of the filter system may not need the grating structure for the major side walls. In that embodiment of the present invention, the major side walls of the frame may be just a big opening.
  • The modular filter screen units may be configured and dimensioned to slidingly engage the frame. For example, as illustrated in FIG. 1B, the frame is provided with channels 200 along the side edges of the two major side walls along their inside surface. The channels preferably extend substantially the full height of the frame. Of course, the channels may also be embodied as clips or other fastening and/or guiding mechanisms. Referring to FIG. 3B, the side edges of the modular filter screen units 190 are configured and dimensioned to engage the channels 200 of frame 100 by sliding into the channel from the top. FIG. 3B is a top down view of one of the channels of the frame with a modular filter screen unit 190 glidingly engaged within the channel.
  • To install the filtering system of the present invention, the storm drain grate is lifted up or tilted up from its normal resting position exposing the storm drain opening. If the storm drain opening does not have ledges or other suitable support structure for holding the frame of the filtering system, suitable supporting structure(s) 300 illustrated in FIG. 2A or 2B are installed into the wall of the catch basin 315. Such supporting structures include an L or U-shaped support having a first end for mounting (e.g. via bolts) to the wall and a second end mountable to the frame. The frame of the filtering system is then dropped into the storm drain opening such that the flange portion along the top edge of the frame rests on the supporting structure(s). Appropriate modular filter screen units are then installed, one on each side of the major side walls of the frame by sliding the modular filter screen units into the channels of the frame.
  • FIG. 4 illustrates an exploded view of various components associated with the filter system according to another embodiment of the present invention. As shown therein, a frame structure 100′ has a T-shaped support defined by a horizontal top edge bar member 108 extending between and coupled to opposite minor side walls 120, 130, and a single support arm 105 extending between and coupled to top edge bar member 108 and bottom 110. Single support are 105 is disposed on each of the major sidewalls for supporting the structure.
  • A removable mesh screen 187 and/or modular filter screen unit 190 is insertable into channels along the major sidewalls of the frame. In an exemplary embodiment, a stainless steel wire mesh screen (e.g. a 200 mesh count per inch or 0.0029 inch width opening) and a 1.5 inch thick replaceable filter for collecting debris including petroleum hydrocarbons is provided. The bottom surface 110 is flat and preferably formed of solid stainless steel. A hood 210 having inwardly tapered side panels 212 may be coupled onto the top opening of frame 100′ for funneling the matter from the storm gate or drain into the structure. The structure may be formed of 304 stainless steel, including the screen and filter units.
  • FIG. 5 illustrates a top view of frame structure 100′ illustrated in FIG. 4, while FIGS. 6 and 7 illustrate major and minor side views of frame structure 100′, respectively. The dimensions provided are exemplary. As shown therein, channels 205 and 210 removably accommodate filter unit 190 and mesh screen 187 to provide for debris filtering. The filter and screen may each be separately removable in a vertical fashion independent of one another. While both filter unit and screen are illustrated in the embodiment depicted, it is understood that either or both filter mechanisms may be incorporated into the frame structure.
  • FIG. 6 illustrates a more detailed major side view of the frame structure 100′ having bar members 105 and 108 in a T-shaped arrangement for supporting the major sidewalls. Flange 174 enables hanging the structure as discussed with respect to FIG. 1A.
  • FIG. 7 illustrates a more detailed minor side view of the frame structure 100′ wherein angled slots 191 provide for overflow. The structure further includes stiffener channels 199 disposed on the bottom surface as shown in FIG. 7 for providing additional support.
  • The members of the public works or road maintenance crew will periodically inspect the storm drains installed with the filtering system of the present invention. If the filtering system is filled with silt or other debris, the debris may be removed by, for example, using a jet-vacuum after the storm grate is removed. If appropriate, each of the modular filter screens also may be temporarily removed for cleaning. Because the components of the filter system, including the modular filter screen units are made of stainless steel, they are corrosion resistant and should be reused without being replaced for a long time.

Claims (11)

1. An apparatus for removing debris from water passing through a storm drain, comprising:
a frame adapted to be positioned underneath a storm grate for receiving said water, the frame having a bottom side and major and minor sidewalls, the major sidewalls having openings therein for allowing water to pass; and
a filter removably insertable along at least a portion of the major sidewalls for filtering debris from said water.
2. The apparatus of claim 1, wherein said bottom side is solid and includes a central ridge along the longitudinal axis of the frame such that the bottom side is pitched downwardly from the central ridge toward the major sidewalls.
3. The apparatus of claim 1, further comprising channels along said major sidewalls for retaining said filter within said frame.
4. The apparatus of claim 1, wherein said frame has a rectangular shape.
5. The apparatus of claim 1, wherein said filter comprises a mesh screen.
6. The apparatus of claim 1, wherein said filter comprises a filter for collecting petroleum hydrocarbons.
7. The apparatus of claim 1, wherein said filter comprises a mesh screen in combination with a filter unit for collecting petroleum hydrocarbons.
8. The apparatus of claim 1, further comprising a support structure for coupling a portion of the frame to a wall of the storm drain.
9. The apparatus of claim 1, wherein the minor sidewalls are solid.
10. The apparatus of claim 9, wherein the major sidewalls have grated openings.
11. The apparatus of claim 10, wherein the grated openings of said major sidewalls vary in size and shape.
US11/110,649 2004-04-20 2005-04-20 Silt and debris filtering system for storm drains Abandoned US20050247612A1 (en)

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Cited By (18)

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US20050199537A1 (en) * 2004-03-10 2005-09-15 Robert Kluge Storm drain filtration system
US20060049085A1 (en) * 2004-09-08 2006-03-09 Parker Todd G Quick release drain filter apparatus and system
US20060207922A1 (en) * 2005-03-21 2006-09-21 Dussich George V A I Storm water filtration system
US20080023382A1 (en) * 2006-07-27 2008-01-31 Longo Salvatore R Support for filter system
US20080093280A1 (en) * 2005-07-05 2008-04-24 Kang Seong-Hee Litter screen
US20090152181A1 (en) * 2007-12-17 2009-06-18 Henry Happel Backwashing filter basket
US8012346B2 (en) * 2004-07-21 2011-09-06 Fabco Industries, Inc. Storm sewer insert for filtering and treating stormwater
US20110278237A1 (en) * 2010-05-12 2011-11-17 Catch-All, Llc Deformable sump insert
US20120074048A1 (en) * 2010-09-23 2012-03-29 Robert Glassheim Silt and debris filtering system for storm drains
US8679328B2 (en) * 2012-04-10 2014-03-25 Frank Hebert Floor drain cover
US9643111B2 (en) 2013-03-08 2017-05-09 National Oilwell Varco, L.P. Vector maximizing screen
US9643113B2 (en) 2014-02-14 2017-05-09 Hussmann Corporation Drain cover
US20170145677A1 (en) * 2015-11-25 2017-05-25 Flo-Water, Llc Water inlet protection system
US20170348620A1 (en) * 2016-06-01 2017-12-07 Omnitek Partners Llc Modular Contaminant Filtering System For Rain Water Run-Off, Emergency Spills, and Isolated Regular Discharge Flows
US10384155B1 (en) * 2013-08-21 2019-08-20 Enpac, L.L.C. Storm drain sediment filter
US10465371B2 (en) * 2011-12-02 2019-11-05 Todd Wacome Treating runoff
US11124958B1 (en) * 2016-10-03 2021-09-21 Leanne M. Gagliardi Debris catching device for open manhole
US11346094B2 (en) * 2018-07-26 2022-05-31 Landroad Inc Storm drain filters

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