Patents by Inventor Manfred A. A. Lupke

Manfred A. A. Lupke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200011462
    Abstract: A pipe connection used in corrugated pipe includes a male/female connection that is configured to accommodate movement of the male connector in the female connector after installation of the pipe. The ability to maintain a satisfactory pipe connection throughout a desired and designed range of movement is helpful in applications where the pipe may be exposed to changing conditions such as ground settling, ground shifting, earthquake or other conditions. The male connector and the female connector for receiving the male connector are oversized to allow additional insertion of the male connector or partial withdrawal of the male connector while maintaining the pipe connection throughout the range of movement. The pipe connection can also be used to provide an effective two stage male/female connection between reinforced plastic pipe sections.
    Type: Application
    Filed: August 15, 2019
    Publication date: January 9, 2020
    Inventors: Manfred A.A. Lupke, Stefan A. Lupke
  • Publication number: 20190299516
    Abstract: A pulsating corrugator is provided with at least one secondary mold block that is selectively used for forming a spigot connection as the corrugated or ribbed pipe is formed. Preferably, the primary mold blocks used to form the corrugated pipe are also used to assist in further cooling of the formed spigot connection once released from the secondary mold block. The corrugator also includes a controller used to provide different air pressure as the mold blocks move past extrusion outlets of an associate extruder.
    Type: Application
    Filed: October 20, 2017
    Publication date: October 3, 2019
    Inventors: Manfred A.A. Lupke, Stefan A. Lupke
  • Patent number: 10279536
    Abstract: Pipe corrugators having opposed series of pushed mold blocks forming a moving mold tunnel are subject to significant thermal expansion and are designed with a thermal expansion gap. The present invention provides a method and apparatus for measuring changes in this expansion gap and preferably recognizing potential thermal issues before serious problems occur. A sensor is provided adjacent a mold block drive that preferably detects a time duration between sensing a trailing portion of a lead mold block and a leading edge of a following mold block separated from the lead mold block by the thermal expansion gap. This time duration in combination with a speed of the pushed mold blocks is used to calculate the size of the thermal expansion gap.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: May 7, 2019
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 9969119
    Abstract: A two stage mold block transfer station is used the exit of a moving mold tunnel to quickly move mold blocks to a clear position relative to the molded product. Once in the clear position the mold block is rotated and provided to a return drive moving the mold block back to the inlet of the moving mold tunnel. By moving the last mold block of the moving mold tunnel primarily away from the longitudinal axis of the mold tunnel less mold blocks are required. Various arrangements for moving of the mold blocks can be used achieve this advantage.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: May 15, 2018
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Publication number: 20170321829
    Abstract: A pipe coupling for triple wall corrugated plastic pipe includes a triple wall corrugated bellmouth connector that is of a unitary construction with one end of the corrugated plastic pipe. This bellmouth connector is of higher strength and in cooperation with the two wall corrugated spigot provides a high strength coupling. This coupling includes the bellmouth connector and spigot that are made inline with the corrugated pipe. A method for the manufacture of the pipe includes controlling of an air pressure on the outside of a formed two wall corrugated pipe as an exterior third wall is secured thereto.
    Type: Application
    Filed: November 27, 2015
    Publication date: November 9, 2017
    Inventors: Manfred A. A. LUPKE, Stefan A. LUPKE
  • Publication number: 20170217074
    Abstract: In the manufacture of double-walled corrugated extruded pipe it is desirable to form an integral connecting cuff that is of a single wall thickness and typically of a large diameter. The mold blocks and process parameters for forming of the cuff as part of an otherwise double-walled pipe requires a transition as the cuff moves past the die outlets. The present invention allows for accurate sensing and control of air pressure and temperature as the cuff moves past the die outlets. Improvements in both the die tooling and the method of manufacture are disclosed.
    Type: Application
    Filed: July 23, 2015
    Publication date: August 3, 2017
    Inventors: Manfred A.A. LUPKE, Stefan A. LUPKE
  • Publication number: 20170217080
    Abstract: A two stage mold block transfer station is used the exit of a moving mold tunnel to quickly move mold blocks to a clear position relative to the molded product. Once in the clear position the mold block is rotated and provided to a return drive moving the mold block back to the inlet of the moving mold tunnel. By moving the last mold block of the moving mold tunnel primarily away from the longitudinal axis of the mold tunnel less mold blocks are required. Various arrangements for moving of the mold blocks can be used achieve this advantage.
    Type: Application
    Filed: September 30, 2015
    Publication date: August 3, 2017
    Inventors: Manfred A. A. LUPKE, Stefan A. LUPKE
  • Publication number: 20170066174
    Abstract: Pipe corrugators having opposed series of pushed mold blocks forming a moving mold tunnel are subject to significant thermal expansion and are designed with a thermal expansion gap. The present invention provides a method and apparatus for measuring changes in this expansion gap and preferably recognizing potential thermal issues before serious problems occur. A sensor is provided adjacent a mold block drive that preferably detects a time duration between sensing a trailing portion of a lead mold block and a leading edge of a following mold block separated from the lead mold block by the thermal expansion gap. This time duration in combination with a speed of the pushed mold blocks is used to calculate the size of the thermal expansion gap.
    Type: Application
    Filed: November 16, 2016
    Publication date: March 9, 2017
    Inventors: Manfred A.A. Lupke, Stefan A. Lupke
  • Publication number: 20160265700
    Abstract: A pipe connection used in corrugated pipe includes a male/female connection that is configured to accommodate movement of the male connector in the female connector after installation of the pipe. The ability to maintain a satisfactory pipe connection throughout a desired and designed range of movement is helpful in applications where the pipe may be exposed to changing conditions such as ground settling, ground shifting, earthquake or other conditions. The male connector and the female connector for receiving the male connector are oversized to allow additional insertion of the male connector or partial withdrawal of the male connector while maintaining the pipe connection throughout the range of movement. The pipe connection can also he used to provide an effective two stage male/female connection between reinforced plastic pipe sections.
    Type: Application
    Filed: May 11, 2016
    Publication date: September 15, 2016
    Inventors: Manfred A.A. Lupke, Stefan A. Lupke
  • Patent number: 8684719
    Abstract: 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.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 1, 2014
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Publication number: 20120085206
    Abstract: 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.
    Type: Application
    Filed: December 19, 2011
    Publication date: April 12, 2012
    Inventors: Manfred A. A. LUPKE, Stefan A. LUPKE
  • Patent number: 8146620
    Abstract: 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.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: April 3, 2012
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 8075295
    Abstract: 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.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: December 13, 2011
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 7976753
    Abstract: 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.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: July 12, 2011
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Publication number: 20100316754
    Abstract: 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.
    Type: Application
    Filed: June 11, 2010
    Publication date: December 16, 2010
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Publication number: 20100303942
    Abstract: 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.
    Type: Application
    Filed: March 31, 2008
    Publication date: December 2, 2010
    Inventors: Manfred A.A. Lupke, Stefan A. Lupke
  • Patent number: 7798796
    Abstract: The pipe molding system includes a separable cooling plug and an automatic procedure to alleviate problems associated with excess plastic continuing to extrude after a sudden shutdown of the extrusion system. The separable cooling plug and shutdown procedure includes accommodating any excess plastic in a created void between the cooling plug and the extruder. This arrangement simplifies removal of the excess plastic and reduces the time required to return the equipment to normal production. Preferably, a controller monitors operating conditions of the system and automatically releases the cooling plug based on the monitored operating conditions.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: September 21, 2010
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Publication number: 20100200100
    Abstract: 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.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 12, 2010
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 7691317
    Abstract: In at least one method for manufacturing a double-walled, thermoplastic tube with a connecting sleeve, which enables precise and complete moulding of the connecting sleeve by simple means, it is provided that a) a first tube (1) is extruded into a mould tunnel (4) comprising at least one row of moulds (5) guided on a path, b) the first tube (1) is given a corrugated shape in at least one first section and expanded into a connecting sleeve in at least one second section, c) a second tube (6) is extruded into the first tube and pressed against the corrugation troughs (8) of the first tube (1), d) while the first tube (1) is being given a corrugated shape and the second tube (6) extruded into the first, the space (A) between the two tubes (1, 6) is subjected to a pressure p1 that is above atmospheric pressure, e) the space (A) between the two tubes (1, 6) is subjected, at a specified time before or after expansion of the first tube (1) into a connecting sleeve, to an essentially constant pressure p2?p1 above atm
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: April 6, 2010
    Assignee: Corma, Inc.
    Inventors: Manfred A. A. Lupke, Stefan Lupke
  • Publication number: 20100031789
    Abstract: 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.
    Type: Application
    Filed: January 28, 2009
    Publication date: February 11, 2010
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke