Patent application number | Description | Published |
20090206595 | Double walled corrugated pipe section with pipe coupling - A corrugated double wall plastic pipe with a bell connector at one end of the pipe section and an insert connector at the opposite end of the pipe. The insert connector includes an inner wall that cooperates with the bell connector at the junction of the bell connector and the pipe to continue to the inner wall between pipes joined by an insert connector of one pipe inserted in the bell connector of a second pipe. | 08-20-2009 |
20100031789 | Pipe cut-off apparatus - A pipe cutting apparatus includes a machine base having a first machine table slidably secured for moving with a pipe during the extrusion thereof. The apparatus includes a rotary base table with a cutting arrangement attached at a periphery thereof such that the cutting arrangement orbits about the pipe during cutting thereof. The cutting arrangement includes a cutting tool supported on a pivoting support arm. The support arm includes an independent powered gear drive train for pivoting the support arm to accommodate different sizes of pipe and to allow cutting. Preferably the cutting apparatus has a second slidable table to allow precision cutting of multiple cuts of the pipe while the pipe is clamped or held. | 02-11-2010 |
20100200100 | Non-circular pipe profile - A corrugated pipe having a non circular in cross section profile and at least one generally elongate wall section is improved by using a variable height corrugation in the length of the elongate wall segment. The variable height corrugation is of a greatest height at a center portion thereof and decreases in height towards the end points of the elongate wall segment. A spanning type truss arrangement is formed that opposes inward deflection of the straight wall segment. | 08-12-2010 |
20100316754 | Die Tooling for Extruding Tubular Product - Die tooling is formed by forming a series of passages extending in the length of the tooling where each passage has a circumference defined within a body member of the tooling. Preferably the passages are primarily formed using a drilling procedure. The passages define a predetermined pattern of outlets adjacent the extrusion outlet or outlets. The passages between the inlets and outlets can be formed in a series of connected body members with each passage extending through each body member. Die tooling of this design is more robust and cost effective to manufacture. | 12-16-2010 |
20120085206 | PIPE CUT-OFF APPARATUS - A pipe cutting apparatus includes a machine base having a first machine table slidably secured for moving with a pipe during the extrusion thereof. The apparatus includes a rotary base table with a cutting arrangement attached at a periphery thereof such that the cutting arrangement orbits about the pipe during cutting thereof. The cutting arrangement includes a cutting tool supported on a pivoting support arm. The support arm includes a powered gear drive train for pivoting the support arm to accommodate different sizes of pipe and to allow cutting. The cutting apparatus has a second slidable table to allow precision cutting of multiple cuts of the pipe while the pipe remains clamped or held. The clamp arrangement is supported on and movable with the second slidable table. A controlled actuator is used to move and determine the relative position of the slidable tables. | 04-12-2012 |
Patent application number | Description | Published |
20090206595 | Double walled corrugated pipe section with pipe coupling - A corrugated double wall plastic pipe with a bell connector at one end of the pipe section and an insert connector at the opposite end of the pipe. The insert connector includes an inner wall that cooperates with the bell connector at the junction of the bell connector and the pipe to continue to the inner wall between pipes joined by an insert connector of one pipe inserted in the bell connector of a second pipe. | 08-20-2009 |
20100031789 | Pipe cut-off apparatus - A pipe cutting apparatus includes a machine base having a first machine table slidably secured for moving with a pipe during the extrusion thereof. The apparatus includes a rotary base table with a cutting arrangement attached at a periphery thereof such that the cutting arrangement orbits about the pipe during cutting thereof. The cutting arrangement includes a cutting tool supported on a pivoting support arm. The support arm includes an independent powered gear drive train for pivoting the support arm to accommodate different sizes of pipe and to allow cutting. Preferably the cutting apparatus has a second slidable table to allow precision cutting of multiple cuts of the pipe while the pipe is clamped or held. | 02-11-2010 |
20100032046 | Method of forming corrugated pipe with a pipe spigot seal seat - A piece of corrugated pipe cut from a longer length of pipe is provided with a pipe coupling part by subjecting one or more of the corrugation crests on the pipe to heat and pressure. This reshapes the one or more corrugations to form a seal receiving recessed spigot on the piece of pipe. | 02-11-2010 |
20100200100 | Non-circular pipe profile - A corrugated pipe having a non circular in cross section profile and at least one generally elongate wall section is improved by using a variable height corrugation in the length of the elongate wall segment. The variable height corrugation is of a greatest height at a center portion thereof and decreases in height towards the end points of the elongate wall segment. A spanning type truss arrangement is formed that opposes inward deflection of the straight wall segment. | 08-12-2010 |
20100303942 | Alignable Cooling Plug for Extruder - A molding apparatus for the manufacture of pipe advantageously uses a cooling plug that is adjustably-secured to the extrusion head to compensate for misalignment of the extrusion head relative to recirculating mold blocks. This provides a simplified adjustment for adjusting the molding apparatus to correct for wall thickness variations in the molded pipe. This apparatus can be used in combination with existing alignment systems. | 12-02-2010 |
20100316754 | Die Tooling for Extruding Tubular Product - Die tooling is formed by forming a series of passages extending in the length of the tooling where each passage has a circumference defined within a body member of the tooling. Preferably the passages are primarily formed using a drilling procedure. The passages define a predetermined pattern of outlets adjacent the extrusion outlet or outlets. The passages between the inlets and outlets can be formed in a series of connected body members with each passage extending through each body member. Die tooling of this design is more robust and cost effective to manufacture. | 12-16-2010 |
20120085206 | PIPE CUT-OFF APPARATUS - A pipe cutting apparatus includes a machine base having a first machine table slidably secured for moving with a pipe during the extrusion thereof. The apparatus includes a rotary base table with a cutting arrangement attached at a periphery thereof such that the cutting arrangement orbits about the pipe during cutting thereof. The cutting arrangement includes a cutting tool supported on a pivoting support arm. The support arm includes a powered gear drive train for pivoting the support arm to accommodate different sizes of pipe and to allow cutting. The cutting apparatus has a second slidable table to allow precision cutting of multiple cuts of the pipe while the pipe remains clamped or held. The clamp arrangement is supported on and movable with the second slidable table. A controlled actuator is used to move and determine the relative position of the slidable tables. | 04-12-2012 |