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| Number | Title | Issue Date |
| 7419331 | Leaching chamber with varying slot opening height A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness which defi... | 09/02/2008 |
| 7191802 | Reinforcing wrap for plastic pipe The combination of a flexible pipe, e.g. plastic, and a reinforcing member mounted around the pipe to strengthen the pipe and to enhance its ability to resist deformation under load. In one embodiment the reinforcing member includes a flexible perforated plastic net... | 03/20/2007 |
| 7189027 | Corrugated leaching chamber A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls which are perforated with slots which slope downwardly, running from interior to exterior of the chamber. The slot height and or w... | 03/13/2007 |
| 7174920 | Method for repairing pipes The invention concerns a method for repairing a pressurized fluid supply pipeline (1) comprising a series of buried prestressed concrete pipe segments (2, 3, 4) which consists in: providing excavations in the trench, beneath suitably set portions (6... | 02/13/2007 |
| 7160059 | Adjustable angle coupler for leaching chamber systems An adjustable coupler is disclosed for interconnecting leaching chambers to create a serpentine pathway for a leaching field. A coupler can connect a first leaching chamber and a second leaching chamber. The coupler can comprise a mating feature and an adjustment fe... | 01/09/2007 |
| 6955190 | Reinforcing wrap for plastic pipe The combination of a flexible pipe, e.g. plastic, and a reinforcing member mounted around the pipe to strengthen the pipe and to enhance its ability to resist deformation under load. In one embodiment the reinforcing member includes a flexible perforated plastic net... | 10/18/2005 |
| 6878881 | Modular cable protector assembly A modular cable protector assembly has side ramps, tunnel members, and tunnel connectors that can be removably engaged to one another in a modular fashion to form a wide variety of configurations. Each tunnel member includes a tunnel extending along its length for p... | 04/12/2005 |
| 6866448 | Fiber optic installation The invention relates to a process for introducing an optical cable, in the form of a microcable or minicable (1), in solid ground (17) with the aid of a laying unit (23). The microcable or minicable (1) used for this purpose comprises a ... | 03/15/2005 |
| 6854925 | Storm water reservoir with low drag A system using pre-molded polyethylene galleries, utilized for septic or storm water applications, to facilitate rapid and even distribution of effluent and particles across the gallery installation when utilized as a septic system, or minimizes the resistance to st... | 02/15/2005 |
| 6851454 | Reinforcing support for plastic pipe The combination of a flexible pipe, e.g. plastic, and a reinforcing member mounted around the pipe to strengthen the pipe and to enhance its ability to resist deformation under load. In one embodiment the reinforcing member includes a flexible perforated plastic net... | 02/08/2005 |
| 6702518 | Underground conveyance protection device and method Disclosed above are a device and method for protecting underground conveyances, wherein the device comprises a carrier containing fill material and, optionally, comprising a web material reinforcing the carrier. The device is oriented over an underground ... | 03/09/2004 |
| 6702517 | Pipe assembly for collecting surface water runoff and associated methods The present invention includes a pipe assembly for collecting water runoff. The pipe assembly includes a plurality of elongated primary pipes disposed in adjacent contact along their lengths. Each pair of adjacent elongated primary pipes define upper and ... | 03/09/2004 |
| 6695538 | Drainage pipe support/diverter system A drainage support/diverter system for use in connection with a perforated pipe drainage system within a drainage trench, comprising a number of drainage support/diverters that create impermeable barriers to moisture flow along the length of the trench ou... | 02/24/2004 |
| 6592293 | Adjustable angle coupler for leaching chamber systems An adjustable coupler interconnects leaching chambers to create a serpentine pathway for a leaching field. The coupler can comprise a mating feature, which can be used to mate the coupler between a first leaching chamber and a second leaching chamber, and... | 07/15/2003 |
| 6557780 | Irrigation pipe protector A padding is placed around an underground irrigation pipe which allows the irrigation pipe to flex and bend when the irrigation pipe is struck or compressed. The padding is preferably a synthetic polymer that substantially reverts back to its original siz... | 05/06/2003 |
| 6517283 | Cascading chute drainage system A drainage system for collecting, isolating and relocating moisture incorporating cascading chutes which collect moisture and create an inner channel from which collected moisture cannot escape to re-infiltrate surrounding soil prior to its discharge poin... | 02/11/2003 |
| 6461078 | Plastic sewage pipe Systems for leaching liquid waste, particularly waste water. More particularly a cylindrical conduit or pipe for use in leaching systems. The pipe further has axially directed cuts or apertures in conduit/pipe valleys, has ridges, channels and grooves ove... | 10/08/2002 |
| 6361248 | Stormwater dispensing chamber An elongated plastic chamber utilized for disposal of stormwater has a corrugated wall structure having successive peaks and valleys. The peaks and valleys are connected by upstream and downstream web panels. A series of apertures is disposed in the upstr... | 03/26/2002 |
| 6311710 | Reduction of heat transfer between a body and its environment Heat transfer between a body and its surrounding fluidous environment is reduced by placing at least one baffle-insulator adjacent to the body, such that the baffle-insulator which has a thermal conductivity of less than about 5 watts/meter-° K., disturb... | 11/06/2001 |
| 5988227 | Protective shield for elongated underground utilities A protective shield for elongated underground utilities such as an elongated underground utility strand or pipe is disclosed. The protective shield includes a foldable elongated flexible sheet of shock absorbing material adapted to both overlie and underl... | 11/23/1999 |
| 5879109 | Process and apparatus for introducing an optical or electrical cable into solid ground A process and apparatus for introducing a cable into a channel, which is formed into a heated surface of solid ground, such as asphalt, displaces the material to form a channel, inserts the cable and then reintroduces the displaced material back into the ... | 03/09/1999 |
| 5857493 | Lawn and Garden edging system The instant invention is a lawn and garden edging system which provides for a border device positionable adjacent walks and plant beds with provisions for the attachment of watering and lighting components. An insertion structure is provided which is inse... | 01/12/1999 |
| 5765586 | Reduction of heat transfer between a body and its environment Heat transfer between a body and its surrounding fluidous environment is reduced by placing at least one baffle-insulator adjacent to the body, such that the baffle-insulator which has a thermal conductivity of less than about 5 watts/meter-°K, disturbs,... | 06/16/1998 |
| 5755527 | Roadway water ramp apparatus Ramp apparatus conveying water across a thoroughfare includes a pair of ramp elements spaced apart from each other with a liquid carrying element disposed between them. The ramp elements and the liquid carrying element are secured together as an integral ... | 05/26/1998 |
| 5669733 | Angled adapter for a leaching chamber system A leaching system (10) includes arched leaching chamber sections (12) and an angled adapter (18) connected adjacent chamber sections at a 22.5° angle. The adapter includes a first portion (122) having sidewalls (140, 142) spanned by a vaulted portion (14... | 09/23/1997 |
| 5527070 | Damage protection for in-ground pipe founded in expansive soils An in-ground installed pipe system, laid in expansive type soils, that has a plastic-like wrapping of the main pipe area and a plastic-like covered cushion layer of the joint connections, to provide protection to a pipe system against pipe movement and jo... | 06/18/1996 |
| 5509758 | Method and apparatus for padmount transformer installation A template is provided having an expandable base portion (12) with a plurality of raised side cavities (24) to receive and retain underground cables prior to, during and after trench backfilling. The base includes a pair of slidably mounted wings (14) to ... | 04/23/1996 |
| 5449020 | Elongated enclosure of large cross-section, and process for its manufacture An elongated enclosure designed to withstand internal pressure which may exceed 10 bars and forming a sealed, fluid-tight tubular space having a truncated transverse section, the enclosure comprising a lower part formed by a rigid concrete slab resting on... | 09/12/1995 |
| 5441363 | Leaching chamber A leaching chamber for burial in the ground includes non-symmetrical corrugations extending laterally across the leaching chamber. Each corrugation has a ridge and a shoulder with the ridge being higher than the shoulder and sloping down from the ridge to... | 08/15/1995 |
| 5385431 | Flow conduit for traversing a traffic way An apparatus is provided for conveying flow across a traffic way between a first flow conduit and a second flow conduit. The apparatus includes a ramp member defining an interior region, a first coupling attachment coupling to the first flow conduit for d... | 01/31/1995 |
| 5372454 | System for vapor recovery without formation of fluid blockages and a pipe therefor System for vapor recovery without formation of fluid blockages includes a vapor source, a fluid collection tank for collecting vapor, and a vapor recovery pipe extending between and fluidly collecting the vapor source and the fluid collection tank. The va... | 12/13/1994 |
| 5281053 | Underground tubular structural system and process for producing it An underground tubular structural system capable of having a very large cross section, for the construction of urban or rural conduits, underground passages and other civil engineering installations. At least two conduits (S1) (S2), namely, a high conduit... | 01/25/1994 |
| 5261461 | Pipeline rehabilitation articulated gasketed-joint pipe A liner pipe comprising sections of polyethylene pipe connected by articulated gasketed joints of bell and spigot design which are specifically adapted for ease of compression lining of large diameter pipe with minimum disruption to surface traffic and pi... | 11/16/1993 |
| 5227080 | Intrinsically lubricated material compositions and products thereof A conduit formed of extruded polymeric material, which outer surfaces are continuously intrinsically lubricated by a reserve of active lubricious agents which migrate outwardly from within the composition to such surfaces.... | 07/13/1993 |
| 5180254 | Fluid-conveying conduit A fluid-conveying conduit of large cross section for conveying fluid under high pressure, formed by assembling on a laying surface a plurality of prefabricated longitudinal elements placed in sequence and comprising, in transverse section, a lower base an... | 01/19/1993 |
| 5099889 | External pipe protector An external pipe protector for protecting steel or plastic pipe against damage is disclosed. The protector includes a flexible sheet of shock absorbing material which is shaped and sized to encircle at least part of the length of the pipe. Opposite ends o... | 03/31/1992 |
| 5092710 | Underground tubular structural system and process for producing it An underground tubular structural system capable of having a very large cross section, for the construction of urban or rural conduits, underground passages and other civil engineering installations. At least two conduits (S1) (S2), namely a high conduit ... | 03/03/1992 |
| 5087151 | Drainage system In septic systems for handling household waste water or in clear water drainage applications, lightweight molded polyethylene galleries are used to form the drain field. The galleries can be axially aligned in end-to-end relationship with each gallery def... | 02/11/1992 |
| 5061121 | Fluid-conveying conduit A fluid-conveying conduit of large cross section, formed by assembling on a laying surface a plurality of prefabricated longitudinal elements placed in sequence and comprising, in transverse section, a lower base and a vault having two lateral edges conne... | 10/29/1991 |
| 5060696 | Plastic pipe comprising an outer corrugated pipe and a smooth inner wall A plastic pipe consisting of an outer corrugated plastic pipe and an inner smooth wall consisting of a wear resistant elastomer, particularly a thermoplastic rubber fixed in the inner bottoms wave valleys to said outer corrugated pipe. The inner wall cons... | 10/29/1991 |
