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| Number | Title | Issue Date |
| 4940359 | Chemical safety conduit or trench An elongate safety conduit or trench for receiving chemical liquids, having first and second preassembled conduit elements, the first located and retained within the second. A space is between the two at the bottom for collecting liquid that may leak thro... | 07/10/1990 |
| 4935129 | Closure device for a scupper drain The passage of a scupper drain is normally maintained in a closed position by a pair of spring-biased semi-circular pivotal flaps which are mounted within a housing provided with an associated cap, thus permitting the flaps to only pivot downwardly for op... | 06/19/1990 |
| 4925339 | Expansion joint cover and drain A system for protecting and draining expansion joints joining juxtaposed discrete sections of construction materials is disclosed in which a pair of laterally disposed sheet members having free ends rebent into moveably interlocked curves, and secured end... | 05/15/1990 |
| 4909660 | Grating with a locking mechanism A cover assembly for an opening comprises a frame and a covering. At least one elastically deformable, rod-like closing member is provided on the covering. The closing member forms one part of a locking device, the other part of which is a retaining membe... | 03/20/1990 |
| 4909664 | Arrangement for draining liquid collecting on a ground surface In constructions with a relatively limited ground height, e.g., bridges, flat roofs, etc. the foundation or earthwork is covered with a sealing sheet, which extends up to a drain casing or frame. To avoid a return flow of liquid below the sealing sheet an... | 03/20/1990 |
| 4904113 | Highway edgedrain A hydraulic structure is provided in the form of a flexible, flat, corrugated plastic tube having a relatively oblongated cross-section, with apertures associated with the grooves of the corrugation. The tube is enclosed in a geotextile sheath. The two re... | 02/27/1990 |
| 4898494 | Subsurface water drainage system A drainage system for location adjacent a pavement subbase includes a tube of a geotextile fabric supported by a self-sustaining water-porous plastic support. An end of the fabric tube and its encased support are compressively received in the flared open ... | 02/06/1990 |
| 4838732 | Elastomeric sealing device An elastomeric sealing device to prevent ingress of surface fluids into holes, principally drains which are characterized by non-watertight covers or grilles with either regular or irregular topographic boundaries. The device comprises a three-part constr... | 06/13/1989 |
| 4838727 | Slotted drain conduit A one-piece slotted conduit having a thin inner body section and an encompassing frame structure. The encompassing frame structure having specially designed recesses formed in it to ensure maximum conduit strength and an economic use of material. The slot... | 06/13/1989 |
| 4808024 | Method for installing a pavement underdrain A method for inhibiting roadbed erosion and damage to roadways utilizes an underdrain system for removing water which causes such damage. Underdrains in the form of perforate pipes, preferably covered with a geotextile sock as a filter, are disposed trans... | 02/28/1989 |
| 4806043 | Method and device for drainage of borders of all stabilized civil engineering areas or of adjacent borders of a structure A vertical drainage element is constructed and laid in position while at the same time forming a narrow vertical channel in the ground by means of an excavating machine or trencher by performing the following successive operations: a strip of filtering ma... | 02/21/1989 |
| 4804292 | Expansion joint assembly and method The present invention specifically describes an expansion joint assembly for roadways, bridges, parking lot garages and the like which comprises: (a) a first road section terminating with a vertical face having a metal armor upper section and a concrete l... | 02/14/1989 |
| 4793728 | Subsurface water drainage system A drainage system located adjacent a pavement subbase includes a tube of a geotextile fabric supported by a self-sustaining water-porous plastic support. An end of the fabric tube and its encased support are compressively received in the flared open end o... | 12/27/1988 |
| 4789116 | Landing deck for aircraft Landing deck for aircraft, in particular for helicopters, on seagoing vessels and offshore installations, such as platforms. When fuel is leaking from a helicopter after an accident, as for instance an unsuccessful landing, a fire often starts. In order t... | 12/06/1988 |
| 4764051 | Road having curved grooves An apparatus and method for cutting grooves on the edges of an already formed road. Each of a plurality of toothed cutting wheels revolves about a substantially vertical driving shaft. Simultaneously, each cutting wheel (attached to a respective rotary sh... | 08/16/1988 |
| 4751945 | Dual containment channel for fluids A dual containment channel for fluids comprising a plurality of channel segments defining a channel run. Each of the channel segments comprises two spaced apart opposing channel segment side walls connected by a bottom wall for carrying a fluid. A cover i... | 06/21/1988 |
| 4717284 | Device for draining soils in depth A device is provided for draining ground in depth. Each drain includes a tube having perforations in its middle part (1) with solid walls and closed at its lower part so as to form a cup (2), and with solid walls and open at its upper part (4). A siphonin... | 01/05/1988 |
| 4699544 | Protective frame device for drainage channel A drainage channel is shown which features a body having complementary ends which, in abutting relationship, form interlock with adjacent channel bodies when joining the channel bodies together; and an edge protective frame device for the upper free rims ... | 10/13/1987 |
| 4648739 | Load transfer cell assembly for concrete pavement transverse joints A non-corrosive load transfer cell assembly for transverse joints in concrete pavement structures including support chairs, a pair of plastic walls abutting the edges of the concrete joints, a drainage trough for continuous drainage flow, a joint forming ... | 03/10/1987 |
| 4630966 | Drainage channel A drainage channel is shown which features a body having complementary ends which, in abutting relationship, form interlock with adjacent channel bodies when joining the channel bodies together; and an edge protective frame device for the upper free rims ... | 12/23/1986 |
| 4630962 | Drainage channel with locking grate A slotted grate (2) is provided for being positioned in and covering the opening of the channel body (1) of a drainage channel. Anchor means are provided for detachably securing grate (2) to channel body (1) and include a bolt (4) rotatably mounted on gra... | 12/23/1986 |
| 4610566 | Curb inlet with removable gutter form A curb inlet having a removable non-concrete gutter form, which is an arcuate, generally rectangular strip having a concave front face and a convex rear face with a plurality of handles secured to the rear face and, also secured to that rear face, a plura... | 09/09/1986 |
| 4597693 | Method and apparatus for installing highway drainage mat Method and apparatus for inserting an elongated bendable drainage mat having a rectangular cross section below the surface of the ground in a vertical orientation in an advancing trench segment.... | 07/01/1986 |
| 4560302 | Draining ditch for draining of roadways The invention relates to a draining ditch for the draining of roadways comprising a ditch body of U-shaped cross-sectional area which is potted in the concrete bed of the roadway and a cover plate or body covering the upper surface of the ditch body, the ... | 12/24/1985 |
| 4544302 | Catch basin grate riser A grate riser for use with catch basins and the like comprising vertically open rectangular frames with at least two opposing frame sections carrying inwardly projecting horizontal grate support flanges and cooperating grates with opposite end portions of... | 10/01/1985 |
| 4522531 | Transverse joint cell for concrete structures A transverse concrete pavement joint cell including a pair of plastic walls abutting the edges of the concrete joints. A seamless drainage gutter extends longitudinally between said plastic walls to the edges of the pavement. Blocks of compressible elasto... | 06/11/1985 |
| 4475844 | Method and apparatus for restricting local variations in ground level in the vicinity of surface water drains and manholes A tubular drain vertically positioned within the ground beneath the ground level in the vicinity of surface water and having a tubular drain cover-support member anchored in the surface ground layer with a tubular part of the drain cover-support means ext... | 10/09/1984 |
| 4472078 | Frame for draining ditches A frame formed of metal, for draining ditches, comprising two downward pointing legs extending in parallel spaced relationship forming between them a channel having the material in the upper region of the wall of the ditch formed integrally with it therei... | 09/18/1984 |
| 4398842 | Method of overlay and sandwich formation of pervious concrete A method of overlay and sandwich formation of a combination of pervious concrete with itself and/or standard cement concrete wherein the existing surface is cleaned either mechanically or chemically, a coating of cement and water mortar, mixed in a high e... | 08/16/1983 |
| 4388015 | Drainage device embedded in a concrete slab for moisture drainage A drainage device for drainage of moisture which collects between a waterproof isolating layer applied to the top surface and a concrete slab itself and/or moisture which passes through a surface layer deposited on top of the isolating layer. The drainage... | 06/14/1983 |
| 4367142 | Grate for drainage ducts A ladder-like grate for use in drainage ducts, which grate includes a main surface portion and opposed, upright longitudinal edges extending along respective longitudinal sides of the main surface portion, is produced from two sheet metal components at le... | 01/04/1983 |
| 4366846 | Method for collecting and storing liquid from along a railroad track section A containment and storage system for liquids, such as petroleum based liquids, for use for instance in a railroad track environment, comprising a walled containment reservoir formed in the ground and opening upwardly, with the containment reservoir includ... | 01/04/1983 |
| 4365911 | Surface drainage culvert A surface drainage culvert of the type comprising a pipe section which is cut longitudinally forming an aperture along the upper surface of the pipe and which has an upstanding grate assembly lodged within the aperture.The aperture consists of a series of... | 12/28/1982 |
| 4300721 | System for collecting liquid spillage at rail facilities A system for collecting liquid spillage at rail facilities comprises relatively small and lightweight collector pan modules supported by the ties of a railroad track and sealingly joined together so as to extend alongside and between the rails of the trac... | 11/17/1981 |
| 4234267 | Drain trap A drain trap comprises a plurality of flat water conveying plates with fine clearances therebetween and securely fixed to each other by ribs. Below said water conveying plates is fixed another water conveying plate of Y-shape in section having a water gat... | 11/18/1980 |
| 4126404 | Grating A grating to cover a drain for a paved surface such as a road comprises a set of parallel bars interconnected by spacers. In the central part of the grating, adjacent pairs of bars each have only one spacer therebetween, the spacers being positioned alter... | 11/21/1978 |
| 4105353 | Barrier with internal drainage duct A barrier section for separating the center of a two-way roadway is disclosed herein including a thickened foot portion embedded in the ground with an integrally formed upstanding rail portion rising vertically above the surface of the ground. The foot po... | 08/08/1978 |
| 4033702 | Assemblies for sealing roadway curb gaps and method of sealing same An assembly for sealing the intersection of curb and gutter portions of adjacent roadway slabs, including side pads joined by an upstanding joint membrane and a sealing flap extending away from them. The sealing flap is more flexible than the joint membra... | 07/05/1977 |
