Abstract:
An improved manifold assembly for use with a die (15) in the extrusion of plastic comprises a water inlet tube (100); a vacuum tube (135, 140) through which a vacuum is pulled; a water return tube (125, 130); a calibration finger first section (25) having an outer surface (27), at least one water receiving channel (70) connected to the water inlet tube (100) and a vacuum channel (68, 72) connected to the vacuum tube (135, 140), and having the water return tube (130) positioned centrally of the first section outer surface (27) with the first section (25) having formed therein apertures (35, 39) connected to the vacuum channel (72); and a calibration finger second section (26) having an outer surface (86) and an interior channel (84), with the second section (26) having the water return tube (130) positioned centrally of the second section outer surface (86) and apertures (88) formed therein and connected to the interior channel (84).
Abstract:
An improved manifold assembly (10) which can be used in conjunction with a die head (17) in the extrusion of a plastic with the manifold assembly (10) including a water inlet tube (150), a tube (140) through which a vacuum is pulled, a water return tube (130), a calibration finger (16) first section (25), and a calibration finger (16) second section (26).
Abstract:
A method for manufacturing plastic pipe such that the pipe has apertures formed therein when the pipe is viewed in cross section, comprising the steps of having hot plastic flow through a die (15) and subsequently be extruded through a die head (17) to form an extruded wall component having first and second end walls, with the die head (17) having formed therein a plurality of first sized gaps (17a) and a plurality of second sized gaps (17b), with the second sized gaps (17b) having an aperture (17c) located inside each of said second sized gaps (17b). The die (15) is secured to a manifold assembly (10), with the manifold assembly (10) comprising sets of tubes (16) located centrally of one another, each set of tubes (16) comprising a water inlet tube (150), a tube through which a vaccum is pulled (140), and a water return tube (130). Each set of tubes (16) is positioned longitudinally within a respective die manifold with the outermost surface of each set of tubes (16) spaced a first distance from the respective die manifold. Each of the respective tubes (16) extends through the die (15).
Abstract:
Stormwater management crate (100) includes a top plate(105) having a first plurality of support column attachments and one or more support column assemblies (115) located below the top plate; the one or more support column assemblies being affixed to the top plate at the support column attachments. The stormwater management crate further includes a bottom plate (105) having a second plurality of support column attachments located below the support column assemblies.
Abstract:
The disclosure relates generally to pipe preparation and processing, more particularly, to a loading and unloading station for moving pipes through the preparation and processing stages of production. The pipe loading and unloading station may include an upstream ramp including a plurality of movable pipe separator tabs, a downstream ramp including a plurality of movable backstop tabs, and a conveyor located between the upstream ramp and downstream ramp and including a plurality of movable ejectors.
Abstract:
A liquid quality system for removing particulates from liquid (e.g., storm-water runoff). The system can include tubular portion (e.g., a manhole). The tubular portion has an inlet and an outlet. The system includes liquid quality device. The liquid quality device includes a partitioning portion. The partitioning portion has a first region including a funnel shape with a sump inlet aperture. The partitioning portion also has a second region including a sump outlet aperture and optionally a sump access aperture. A sump region is located between a base portion and the partitioning portion, wherein a flow of the liquid travels from the inlet in the tubular portion, into the funnel, through the sump inlet aperture, into the sump region, through the sump outlet aperture, and out the outlet of the tubular portion. At least one drag-inducing portion is positioned proximate the tubular portion in the sump region and projecting inwardly towards a central axis of the sump region.
Abstract:
A disclosed pipe scuffing device includes a frame and a shaft coupled to the frame and configured to rotate about a central axis. The pipe scuffing device also includes a drive motor configured to drive the rotation of the shaft. The device further includes one or more abrasive wheels disposed about the shaft and having an abrasive outer surface configured to engage an outer surface of a pipe when rotating with the shaft to remove one or more contaminants from the outer surface of the pipe.
Abstract:
This disclosure relates generally to stormwater management and, more particularly, to a stormwater chamber with a continuous curvature. The stormwater chamber may comprise a chamber body with a chamber wall, an apex, a base, and a first and second opening. The chamber wall may include a continuous curvature from the apex of the chamber body to the first and second openings and a continuous curvature from the apex of the chamber body to the base.
Abstract:
A coupling (10) for three-wall, corrugated pipe, the pipe including a corrugated wall (22) having a plurality of primary corrugations, is disclosed. The coupling includes a first pipe section (16) having disposed at one end a bell portion (12), the bell portion having a bell portion of corrugated wall and an outer wall (24); a second pipe section (18) having disposed at one end a spigot portion (14), the spigot portion having a spigot portion of corrugated wall between an inner wall (20) and an outer wall; and a gasket (34) disposed in a groove extending around a circumference of the spigot portion and engaged between the bell portion of corrugated wall and the spigot portion of corrugated wall. A three-wall, corrugated pipe section, and method for assembling a plurality of three-wall, corrugated pipe sections, are also disclosed.
Abstract:
A mold is provided for forming a continuously-extruded parison into a corrugated pipe. The mold includes a mold housing having a plurality of bores, a mold cavity having a plurality of annular corrugations, and a plurality of punches. Each punch is disposed in one of the bores and aligned with one of the annular corrugations of the mold cavity. Each punch is also configured to form an aperture in a corrugation of a corrugated pipe in the mold. A continuous extrusion blow molding system and a method are also provided for forming a hollow plastic product and punching a continuously-extruded, blow molded product before it is released from a mold.