1
Oscar S Arntyr, Thord I Engstrom: Filtering and collecting device for water drains. Sughrue Mion Zinn Macpeak and Seas, December 6, 1983: US04419232 (115 worldwide citation)

A device for use in water drains provided with an outer drain grating for preventing accidents and coarse material falling into the drain. The device is intended for separating and collecting particulate impurities, such as sand, wooden pegs and leaves, and also oil and other liquid impurities passi ...


2
Risto Valisalo: Drilling apparatus for replacing underground pipes. RD Trenchless Oy, Pollock Vande Sande & Priddy, August 11, 1998: US05791419 (90 worldwide citation)

The present invention relates to a drilling apparatus provided for drilling away an existing underground pipe and for replacing it with a new pipe. The apparatus comprises a tubular body; a percussive drill bit slidably connected to an end of the tubular body where the drill bit is capable of recipr ...


3
John H Knutson, James H Lenhart, Michael Owen Myers: Apparatus and method for treating storm water runoff. Stormwater Treatment, Christensen O Connor Johnson & Kindness, January 13, 1998: US05707527 (76 worldwide citation)

Apparatus and for the treatment of storm water runoff to remove contaminants that accumulate in the storm water when it flows over paved surfaces in urban areas. The apparatus includes a basket that has an outer surrounding water-permeable wall, and an inner water-permeable wall, spaced from and sur ...


4
John Barella: Contaminant absorbing drainage trough apparatus. Kristar Enterprises, Larry D Johnson, February 24, 1998: US05720574 (72 worldwide citation)

A structure for use with water drainage inlets includes an outside wall portion, a perforated bottom portion, and an inside wall portion. The outside wall, bottom, and inside wall together define a trough for retention of a replaceable filter media. The trough is installed on the inside surface of a ...


5
Edward M Davis, Richard A Bowie: Apparatus for porting a side wall of a conduit from interiorly thereof. Underground Surveys Corporation, Huebner & Worrel, April 15, 1980: US04197908 (67 worldwide citation)

An apparatus for forming a port in a liner installed in a conduit having a lateral opening inwardly overlaid by the liner so that the port coincides with the lateral opening, including a carriage adjustably positionable longitudinally within the liner adjacent to the lateral opening in the conduit; ...


6
Shyh Yuan Shyh: Refuse collecting frame for sewer. Bacon & Thomas, February 8, 1994: US05284580 (65 worldwide citation)

A refuse collecting frame for a drainage sewer, particularly a frame placed beneath a cover of a sewer drainage opening to accumulate refuse and permit easy disposal of refuse accumulated therein in order to prevent blockage of the sewer. The refuse collecting frame includes a frame body and a refus ...


7
Grant R Emery: Curb inlet gravel sediment filter. Scott L Terrell, April 4, 1995: US05403474 (64 worldwide citation)

A portable curb inlet sediment filter which has a box filter frame and a primary baffle panel defining a filter chamber, to be filled with a particulate filter medium, such as gravel, for sediment removal, and an overflow chamber. The overflow chamber has at least one overflow baffle panel in order ...


8
George E Logue Jr: Storm sewer catch basin and filter. Thomas Hooker, December 13, 1994: US05372714 (64 worldwide citation)

The invention relates to a removable filter for buried catch basins. The filter includes a bag located below grade level in the catch basin and looped flaps which extend above grade level and aid in removal of the filter from the catch basin. The filter is held in place in the basin by a heavy grate ...


9
John W MacPherson Jr, Brian L O Neal: System for filtering liquids in a catch basin using filters in series and overflow channels. Emcon Northwest, Schwartz & Weinrieb, June 29, 1993: US05223154 (60 worldwide citation)

Apparatus, methods and media for filtering liquids are especially suited for insertion into an existing storm water catch basin. The filtration that occurs reduces concentration of storn water runoff pollutants including heavy metals, suspended solids, particles and oil and grease. While being able ...


10
Eric Wood: Method of cutting apertures in lining in underground pipes. Insituform Intl, Fred Philpitt, March 25, 1986: US04577388 (59 worldwide citation)

A method for re-establishing side connections to an underground pipe after the same has been lined with a rigid lining of synthetic resin is disclosed, and in the method a cutter of the unit located in the pipeline moves in accordance with a pre-programmed contour which matches the contour of the si ...



Click the thumbnails below to visualize the patent trend.