Means Directing Product Through Tubular Conduit Within Bath Or Shower Means Patents (Class 425/70)
  • Patent number: 9062489
    Abstract: A kit containing components which can be assembled into a shutter panel includes a header, a footer, a plurality of brackets, a first stile, a second stile, a plurality of louvers. One embodiment also contains a jig to align the bracket with the header or footer for attachment. Each bracket is sized and configured to be connected to an end of the header or footer. The stiles each have a longitudinal channel which enables the stiles to be fitted over at least one of the brackets. The jig has a mouth sized to receive an end of the footer or header and a cavity adjacent the mouth such that a user of the jig can place one end of a bracket in the cavity and the other end of the header or footer in the mouth. The kit may be packaged in two packs. One pack contains a header, a footer and a plurality of brackets.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: June 23, 2015
    Assignee: Lumino Inc.
    Inventors: Michael Kollman, Nicholas J. Schultz
  • Patent number: 9017057
    Abstract: A device for producing pellets that has a perforated plate for extruding a melt into a process chamber, and a cutting device for cutting the melt into pellets. The process chamber can have an inlet and an outlet. A conveying device can deliver a process fluid through the inlet, and carry the process fluid and pellets through the outlet. The inlet can have an inlet opening and an inlet channel. A three-way valve can be located between the inlet channel, a process fluid supply line, and a process fluid discharge line, and below the inlet. The outlet can have a discharge opening and an outlet channel. A pneumatic device can provide compressed air to the process chamber for emptying and expelling the process fluid.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: April 28, 2015
    Assignee: Automatik Plastics Machinery GmbH
    Inventor: Stefan Dahlheimer
  • Patent number: 8985986
    Abstract: An apparatus for granulating hot cut, in particular thermoplastic resin material, the material strands melted by an extruder being knocked off into granule pellets in a granulating housing by rotating knives disposed on a shaft driven by way of a motor, the granule pellets being picked up by a cooling medium flowing in the granulating housing, cooled and discharged out of the granulating housing, characterized in that a flow opening establishing a continuous fluid connection between the inside of the granulating housing and the outside environment is designed between the shaft and the region of the granulating housing in which the shaft penetrates the granulating housing.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: March 24, 2015
    Assignee: EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H.
    Inventors: Klaus Feichtinger, Manfred Hackl, Gerhard Wendelin
  • Patent number: 8974209
    Abstract: An underwater cutting and pelletizing apparatus includes: a cutting device that cuts, with a cutter in a water chamber, molten resin, extruded from a die, into pellets; a separation device that separates, from carrier water, pellets sent from the water chamber of the cutting device to downstream with carrier water; a tank that is disposed below the separation device and stores carrier water discharged from the separation device; and a circulation path formed so as to circulate carrier water between the tank and the water chamber, wherein a hydroelectric power generator is provided on a return side of the circulation path formed on a downstream side of the water chamber, and generates electricity from the energy of the carrier water flowing downward in this path. According to such a configuration, the underwater cutting and pelletizing apparatus is made so as to achieve energy savings by recovering and reusing potential energy accompanying carrier water pumped up to a higher location.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 10, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Tatsuto Nagaoka, Masahiko Kashiwa
  • Patent number: 8939755
    Abstract: The invention relates to a device for the implementation of a method for the production of pellets of polyamide 6 or copolyamides. The method can include production of a melt of polyamide 6 or copolyamides by means of polymerization, production of pellets from the melt by means of underwater pelletization into a process fluid, removal of the pellets from a site of underwater pelletization in the process fluid, supply of the pellets in the process fluid to an extraction stage, extraction of low-molecular components as extract, and drying of the pellets after extraction, wherein the underwater pelletization stage and the extraction stage take place using the same process fluid.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: January 27, 2015
    Assignee: Automatik Plastics Machinery GmbH
    Inventor: Stefan Deiss
  • Patent number: 8834760
    Abstract: Described herein are extrusion processes to produce hollow pellets. Also disclosed are pelletizer devices that can be used to produce the hollow pellets. The processes and devices make use of an extrusion die having a die orifice and an insert that is placed in the die orifice to produce the hollow pellets.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: September 16, 2014
    Assignee: Gala Industries, Inc.
    Inventors: J. Wayne Martin, Roger Blake Wright
  • Patent number: 8827671
    Abstract: An extrusion and conditioning apparatus, with an extruder in a conveying position, leads into a conveyor housing connected in a sealed manner to a pneumatic supply line and to a pneumatic conveyor line in which extruded material can be removed pneumatically, by means of superheated steam, via the conveyor line. The extruder can be moved from the conveying position into a bypass position, in which the extruder leads to the exterior of the conveyor housing, having a means for sealing the supply and conveyor lines and the conveyor housing from the surroundings when the extruder is in the conveying and bypass positions.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: September 9, 2014
    Assignee: Mars, Inc.
    Inventor: Siegfried Schmidt
  • Patent number: 8708688
    Abstract: An insulated die plate assembly for use in underwater pelletizing and other granulation processes includes a thin, continuous air chamber formed across the plate assembly generally parallel to the die face such that the heated upstream portion of the die plate assembly is thermally insulated from the downstream portion. The air chamber is atmospherically equilibrated by venting the air chamber to the atmosphere. The plurality of extrusion orifices, either individually or in groups, are formed in extrusion orifice extensions that extend through the insulation chamber so that the process melt to be granulated can pass therethrough. The orifice extensions and the components forming the air chamber around the orifice extensions channel heat along said extensions to maintain the process melt therein at a desired temperature, to help rigidify the die plate assembly and to better seal the air chamber.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: April 29, 2014
    Assignee: Gala Industries, Inc.
    Inventor: Michael A. Fridley
  • Patent number: 8529237
    Abstract: Disclosed are a wet spinning apparatus and a wet spinning method, which enable to manufacture fibers with excellent quality by controlling the flow of a coagulation liquid in a spinning bath and which enable to cope with high speed spinning (or high speed drawing). A wet spinning apparatus (1) comprises a spinning bath (2), at one end in which there are provided a nozzle (5) for discharging a spinning raw liquid and coagulation liquid discharge ports (4a) and (4b) for discharging a coagulation liquid (C), at the other end in which there are provided a drawing roll (10) for drawing coagulated filaments (13) and a coagulation liquid recovery portion (3) into which the coagulation liquid (C) flows out.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: September 10, 2013
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Katsuhiko Ikeda, Hiromasa Inada
  • Patent number: 8506273
    Abstract: A liquid coolant supply pipe and an over flow pipe are provided on the outer side of a capsule forming pipe through which a liquid coolant flows and into which liquid droplets are dropped from a nozzle. The liquid coolant is supplied to the liquid coolant supply pipe by a low pulsatory motion type pump, and the flow is regulated by a flow straightening block in the liquid coolant supply pipe. The cooling liquid passes through a liquid coolant introducing section having a curved surface, and then flows into the capsule forming pipe from an upper portion opening in a cap mounted to the upper part of the capsule forming pipe. The liquid coolant flows into the capsule forming pipe, and the excess flows into the overflow pipe.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: August 13, 2013
    Assignee: Freund Corporation
    Inventors: Masayuki Ikeda, Hiroshi Nagao
  • Patent number: 8361364
    Abstract: A method and apparatus for underwater pelletizing and subsequent drying of crystallizing polymers to crystallize the polymer pellets without subsequent heating is shown in FIG. 5. High velocity air or other inert gas is injected into the water and pellet slurry line (120) toward the dryer near the pelletizer exit (102) at a flow rate of from about 100 to about 175 m3/hour, or more. Such high-speed air movement forms a vapor mist with the water and significantly increases the speed of the pellets into and out of the dryer such that the polymer pellets leave the dryer with sufficient latent heat to cause self-crystallization within the pellets. A valve mechanism in the slurry line (150) after the gas injection further regulates the pellet residence time and a vibrating conveyor after the dryer helps the pellets to achieve the desired level of crystallinity and to avoid agglomeration.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: January 29, 2013
    Assignee: Gala Industries, Inc.
    Inventors: Michael Eloo, Roger B. Wright, Robert G. Mann
  • Publication number: 20120285882
    Abstract: The present disclosure relates to a membrane comprising a porous polymer body with a plurality of channels extending through the polymer body, a method of producing the same and a water treatment system comprising the membrane.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 15, 2012
    Inventors: May May TEOH, Na PENG, Tai-Shung CHUNG
  • Publication number: 20100291252
    Abstract: This invention provides a method of producing chitosan non-woven fabrics and an apparatus thereof. At first, a chitosan acidic solution is extruded to form a chitosan fibrous stream. Then, a solidifying agent is ejected to form a solidifying agent stream. The solidifying agent stream and the chitosan fibrous stream are combined to form a pre-solidified chitosan fiber. Then, high-pressure air is ejected on the pre-solidified chitosan fiber to stretch the pre-solidified chitosan fiber. Finally, the chitosan fibers are collected to form chitosan non-woven fabrics.
    Type: Application
    Filed: July 30, 2010
    Publication date: November 18, 2010
    Inventors: Chao-Chun Peng, Tzu-Hsiang Huang, Jian-Min Lin, Jen-Hsiung Lee
  • Patent number: 7758331
    Abstract: Supporting device for a plastic profile (2), in particular for a plastic pipe, in a calibration device which has a supporting region (1), in which it supports the plastic profile (2), wherein the contour (3) in the supporting region (1) is adapted to the contour of the plastic profile (2). According to the invention, provision is made in that the contour (3) in the supporting region (1), in particular the radius (4), can be changed. Furthermore, the invention relates to a process for changing a supporting region of a supporting device, in which the position of one or more series-arranged supporting devices with continuously changeable supporting region are changed as a function of a predetermined theoretical diameter such that the predetermined diameter is produced.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: July 20, 2010
    Assignee: American Maplan Corporation
    Inventors: Heinrich Dohmann, Reinhard Witt, Ralf Mickley, Norbert Kreth
  • Patent number: 7396224
    Abstract: A calibration basket is configured for a calibration station disposed in an apparatus for producing plastic tubes. The calibration basket contains calibration tools that are successively disposed at a distance from each other across the circumference of the tube. The calibration tools are embodied as calibration strips that extend in the longitudinal direction of the tube that is to be calibrated, are disposed so as to be adjustable on displacement spindles, and are provided with one respective sliding surface that enters in contact with the tube. Recesses that are connected to discharge ports are embodied in a sliding surface and are provided within the calibration strip. The discharge ports extend in a direction of the longitudinal axis of the calibration strip.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: July 8, 2008
    Assignee: Egeplast Werner Strumann GmbH & Co. KG
    Inventor: Herbert Ulrich
  • Patent number: 7393484
    Abstract: A water flow guide stationarily mounted in the water box of an underwater pelletizer to selectively direct the pressurized water flowing through the water box in order to more efficiently cool and rigidify the extruded polymer strands and enable the rotary cutter blades to more effectively shear the strands into pellets and to convey the sheared pellets away from the die face and rotary cutter blades of the pelletizer to the water box outlet. The water flow guide provides an accurately guided pressurized water flow which enables pelletization of polymers of various diameters and a wide range of specific gravity and rheological characteristics.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: July 1, 2008
    Assignee: Gala Industries, Inc.
    Inventor: John W. Martin
  • Publication number: 20080093778
    Abstract: A process and apparatus for producing sub-micron fibers, and more specifically a process and apparatus for effecting formation of sub-micron fibers by fibrillation of polymer films, and nonwoven materials and articles incorporating them.
    Type: Application
    Filed: October 18, 2006
    Publication date: April 24, 2008
    Applicant: Polymer Group, Inc.
    Inventors: Michael H. Johnson, Timothy Krause, Michael W. Hayes, Rajeev Chhabra, Savas Aydore, Olaf Erik Alexander Isele, Han Xu
  • Patent number: 7172397
    Abstract: A two-piece water box assembly includes a water box main body and an inline adapter ring. The water box main body and inline adapter ring define the water box cutting chamber, with the inline adapter ring being positioned between the water box main body and the die plate. The adapter ring is fastened through the die plate to the extruder inlet housing with a first plurality of fastening elements. The water box main body is also coupled to the extruder inlet housing, through apertures in the die plate and inline adapter ring, by a second plurality of fastening elements, preferably less in number than the first plurality of fastening elements. When access to the cutter hub or cutting chamber is necessary for cleaning or otherwise, the water box main body can be removed easily by unfastening the second fastening elements only, while the inline adapter ring remains fixed to the die plate and extruder inlet housing, thus maintaining the seal therewith and the die plate insulation gasket.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: February 6, 2007
    Assignee: Gala Industries, Inc.
    Inventor: Michael A. Fridley
  • Patent number: 7128546
    Abstract: An apparatus for granulating extruded material includes an extruder and an underwater granulator connected to the extruder and having a cutting plate for cutting extruded material, the granulator being hinged so that it can swivel about a swivel axis when disconnected from the extruder. A feed pipe is connected to said granulator for providing process water and a discharge pipe is connected to the granulator for transporting and cooling granulate, the feed pipe and the discharge pipe each having a swivel joint with an axis of rotation which is coaxial to the swivel axis.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: October 31, 2006
    Assignee: Berstorff GmbH
    Inventors: Siegfried Chszaniecki, Gregor Chszaniecki
  • Patent number: 7112047
    Abstract: Infinitely adjustable calibration sleeve for extruded plastic pipes includes an inlet head and two strap layers that intersect like a lattice grate and that are linked with each other at the crossing points. In that manner, the inlet head and the strap layers are adjustable to the pipe diameter, and the inlet head has radially adjustable overlapping segments in a radial plane distributed over the perimeter of the plastic pipe to be calibrated, and the segments mesh and have slots in their overlapping areas. Further, the faces of the segments are configured to lie on the plastic pipe to be calibrated, and the strap layers are linked to the segments flush with the faces. Such a calibration sleeve effectively seals the vacuum tank from the environment and prevents deformations of the entering, extruded plastic pipe.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: September 26, 2006
    Assignee: INOEX GmbH
    Inventors: Jörg Schmuhl, Reinhard Klose
  • Patent number: 7037096
    Abstract: Apparatus for the production of extruded blown cellulose film from a solution of cellulose, water and an amine-oxide, which includes:—extrusion apparatus for continuously extruding a cellulose solution to produce a cellulose film;—solidifying apparatus for solidifying the extruded cellulose film;—drawing apparatus positioned downstream of the extrusion apparatus for continuously drawing the extruded cellulose film from the extrusion apparatus; and a tubular member for containing precipitation apparatus and for receiving an extruded blown film wherein the tubular member is situated within a precipitation bath. The invention also includes a method of extruding blown film.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: May 2, 2006
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandteh Forschung E.V.
    Inventors: Stefan D. Beckers, Peter Weigel, Hans-Peter Fink, Michael Dosz, Hans-Joachim Purz
  • Patent number: 7011509
    Abstract: The invention relates to a cooled calibrating device for a plastic extrusion facility, comprising a housing (5) receiving a cooling liquid (2) and calibrating guides (6) through which a plastic profile (1) is passed, in addition to inlet and outlet holes (10, 23) having attached lines for the cooling liquid, wherein an area (21) free of liquid and filled with air remains above the level of the cooling liquid. An outlet hole (10) for the cooling liquid is arranged at the height of the cooling liquid level (20) in the calibrating device so that the cooling liquid can flow out without an additional pump. An outlet line (11) attached to the outlet hole extends vertically and ends in a cooling liquid reservoir (12) that is subjected to an external atmosphere, wherein a compact liquid column (24) is formed in the outlet line (11).
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: March 14, 2006
    Assignee: Veka AG
    Inventor: Helmut Klein
  • Patent number: 7008203
    Abstract: The present invention relates to a device for granulating thermoplastic materials issuing from orifices, said orifices being provided in a substantially circular arrangement in an orifice plate and being swept by blades rotating about a blade carrier shaft, said blades being held by a blade carrier in an oblique position with respect to the radial direction, the blade carrier shaft extending through the centre of the circular arrangement and a cooling medium being supplied to the orifice plate and to the blades for cooling the granulated plastic materials.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: March 7, 2006
    Assignee: Rieter Automatik GmbH
    Inventor: Reinhardt-Karsten Muerb
  • Publication number: 20040071804
    Abstract: The invention relates to a cooled calibrating device for a plastic extrusion facility, comprising a housing (5) receiving a cooling liquid (2) and calibrating guides (6) through which a plastic profile (1) is passed, in addition to inlet and outlet holes (10, 23) having attached lines for the cooling liquid, wherein an area (21) free of liquid and filled with air remains above the level of the cooling liquid. An outlet hole (10) for the cooling liquid is arranged at the height of the cooling liquid level (20) in the calibrating device so that the cooling liquid can flow out without an additional pump. An outlet line (11) attached to the outlet hole extends vertically and ends in a cooling liquid reservoir (12) that is subjected to an external atmosphere, wherein a compact liquid column (24) is formed in the outlet line (11).
    Type: Application
    Filed: September 16, 2003
    Publication date: April 15, 2004
    Inventor: Helmut Klein
  • Patent number: 6705850
    Abstract: An apparatus for forming a fiber from a biocompatible biopolymer includes a fiber-formation tube that defines a bore extending generally vertically from an upper end to a lower end. Coagulation fluid enters the tube through a fluid inlet coupled to its upper end and establishes a laminar flow of coagulation fluid within the tube. A spinneret introduces a stream of liquid biopolymer into the laminar flow of coagulation fluid so that the stream is surrounded and swept downstream by the coagulation fluid as it coagulates into a biopolymer fiber. The laminar flow of coagulation fluid surrounding the biopolymer stream maintains the shape of the stream so that the resulting fiber is homogeneous in both geometry and structure. The laminar flow of coagulation fluid also prevents the resulting fiber from contacting the inner wall of the fiber-formation tube.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: March 16, 2004
    Assignee: TEI Biosciences, Inc.
    Inventor: Timothy W. Fofonoff
  • Patent number: 6679693
    Abstract: A weir assembly is disclosed in which the size and shape of the opening can be easily changed, by utilizing a sizing insert system. In one embodiment, the sizing insert comprises a mechanical iris. The position of the opening is easily adjustable by utilizing at least one positioning stage that is fastened to the sizing insert. Spring plungers are utilized for retention of the transparent weir plate within the vertical channels of a water trough. A center-finder is utilized to approximately position the opening in relation to an extrusion die.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: January 20, 2004
    Inventors: Daniel H. Martin, Todd E. Davis, Timothy Cortez, Dale R. Lewis
  • Patent number: 6527532
    Abstract: The invention relates to a method for making a dimensionally stable wood-thermoplastic composite material composed of a wood component and a thermoplastic component comprising the steps of forming a wood-thermoplastic mass at a temperature above the melting temperature of the thermoplastic component. The mass is then passed through a converging die to form a shaped extrudate profile having a cross sectional shape wherein at least a part of the converging die is maintained at a substantially higher temperature than that of the mass. The profile is then fed through a low friction thermally insulating land section, the land section having the substantially the same cross sectional shape as the exit end of the converging die. The profile is then quenched in a non-oxidizing environment to form a substantially dimensionally stable outer shell around the profile, the shell having a temperature below the melting temperature of the thermoplastic component.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: March 4, 2003
    Assignee: Trex Company, L.L.C.
    Inventors: John J. Muller, Roger A. Wittenberg, Bruce S. Yarmoska
  • Patent number: 6234778
    Abstract: The invention is an apparatus for spinning solutions of cellulose carbamate by extruding the solution through a spinneret into a precipitation bath, coagulating the cellulose carbamate fibers thus formed and drawing off the fibers by mechanical means, where the fibers are enveloped from the outlet of the spinneret to the outlet of the precipitation bath in a stream of precipitating medium flowing in the same direction, where the velocity of flow of the precipitation medium where the fibers exit the spinneret (plane X1) amounts to 0.1 to 0.8 times the draw-off speed of the fibers, and the velocity of flow of the precipitation medium where the fibers exit the precipitation bath (plane X3) amounts to 0.96 to 1.1 times the draw-off speed of the fibers.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: May 22, 2001
    Assignee: Lurgi Zimmer Aktiengesellschaft
    Inventors: Marco Belch, Gerhard Keunecke, Juergen Wack
  • Patent number: 6135748
    Abstract: An apparatus for manufacturing a liner for installation in an existing conduit in reduced form. The apparatus includes an extruder for extruding heated thermoplastic pipe material through a die to form a tubular shape, a shaping station for shaping the extruded tubular plastic material to the reduced form, a cooling station to cool the liner so that the liner maintains the reduced form and a reheating station to render the liner pliable to be put in suitable form for storage. The liner may be spooled on itself in a layered condition or on a solid spool.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 24, 2000
    Assignee: INA Acquisition Corp.
    Inventor: Campbell H. Steketee, Jr.
  • Patent number: 6089845
    Abstract: Sausages are produced by co-extruding a uniform layer of acid collagen gel around an extruded edible meat product, and chemically coagulating the co-extruded gel in a bath containing a chemical coagulating agent, such as to provide a collagen casing of sufficient mechanical strength to allow mechanical formation of sausage links by twist-linking or crimping.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: July 18, 2000
    Assignee: Devro PLC
    Inventors: Trevor Francis Morgan, Gordon Frame, Petrus Johannes Kobussen, deceased
  • Patent number: 5866251
    Abstract: A process and device produce fibrous starch materials through extrusion of a dispersion or aqueous solution of starch material in a flow of saline coagulant. The dispersion or aqueous solution is extruded through a microporous tubular wall in an annular chamber surrounding the microporous wall to obtain an extrusion flux of starch material which surrounds the tubular wall. Coagulation of the starch material is carried out by feeding a flow of coagulation agent in the annular chamber parallel to the extrusion surface. The fibers obtained from the process or device are able to be used in the paper sector as a substitution for or in combination with cellulose fibers.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: February 2, 1999
    Assignee: Eridania Beghin-Say
    Inventors: Catia Bastioli, Bruno Casale, Gino Zanardi
  • Patent number: 5480295
    Abstract: A sizing device having a series of sets of sizing dies each composed of first and second die elements for use in extruding articles. Each die element is made of a plate having two opposite faces bounded by a peripheral edge. The edge further defines a notch through the plate. The notch in each die element has an open end extending inwardly to a closed end. The first and second die elements can be moved relative to each other from an open position in which the notches are unoccluded to a closed position in which first and second die elements overlie each other in the direction of extrusion and abut with the notches partly occluded by the abutting complementary die element. When the die is closed, the interior closed ends of the notches of the abutting elements of each die overlap to form a passage through the die that determines the shape of the extrusion. Support structure maintains the series of die sets at spaced apart locations in a vacuum extrusion chamber.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: January 2, 1996
    Assignee: The Laitram Corporation
    Inventor: Christopher G. Greve
  • Patent number: 5388976
    Abstract: The invention relates to an extrusion installation for elongate products, more particularly plastics tubes, having an extruder 1, followed by a water-cooled calibration sleeve 8 which can be acted upon by negative pressure and a wall thickness measuring device having an ultrasonic sensor 13. The characterizing feature of the invention is that the calibration sleeve 8 is preceded by a retaining device 10 by which the at least single ultrasonic sensor 13 is borne fixed or rotatable concentrically in relation to the elongate product with a predeterminable distance between its measuring head and the external surface of the elongate product 23, and the retaining device 10 has a releasable attachment sleeve 12 whose diameter so corresponds to the inlet side internal diameter of the calibration sleeve 8 that the attachment sleeve 12 performs a precalibration.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: February 14, 1995
    Assignee: Friedrich Theyson GmbH
    Inventors: Ernst Kruger, Wilhelm Herbach
  • Patent number: 5387093
    Abstract: An apparatus for manufacturing seamless capsules is provided with a multiple nozzle which blows multilayer liquid drops into a hardening liquid. The hardening liquid flows through a main flow path and an auxiliary flow path. The flow of hardening liquid through the main flow path is biased in a direction intersecting the main flow path by a flow of hardening liquid into the main flow path from the auxiliary flow path or a discharge of the hardening liquid from the main flow path into the auxiliary flow path.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: February 7, 1995
    Assignee: Freund Inphachem Inc.
    Inventor: Narimichi Takei
  • Patent number: 5346379
    Abstract: An extruding device for extruding plastic tubing includes an extruder with an outlet and a cooling device connected to the outlet of the extruder. The cooling device has a water-filled chamber and a vacuum tank that is directly connected downstream to the water-filled chamber such that a sealed passage for the plastic tubing between the water-filled chamber and the vacuum tank is provided. The water-filled chamber has a water-filled cooling part and a water-filled measuring part. A water- and vacuum-conveying connection is provided between the measuring part and the vacuum tank. A calibrating sleeve with an inner wall surface is connected within the cooling part and is completely immersed in water for cooling purposes. The calibrating sleeve pulls the extruded plastic tubing against its inner wall surface. A measuring device for measuring the wall thickness of the plastic tubing is connected with the measuring part.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: September 13, 1994
    Assignee: Conpro GmbH
    Inventors: Volkmar R. Wolfl, Ulrich Neumann
  • Patent number: 5342187
    Abstract: A shutter door assembly assembled primarily from extruded plastic components is provided. The shutter door assembly includes an outer rectangular frame surrounding a pivotally attached vaned panel door. Various side, top, and bottom legs of the frame and door are constructed of a hollow extruded plastic and are securely mounted together to form a rigid, durable shutter door. The resulting shutter door has the general look and feel of an actual wooden door. An after-former device for forming extruded tubes for use in the shutter assembly is also provided. The after-former system mounts to a standard circular extrusion head, and converts a circular tube of extrudant to a desired noncircular shape, such as a rectangular shape. The after-former has a conical conduit, with an entrance aperture having a circular shape for receiving the initial extrudant and an exit aperture having the desired noncircular cross-section.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: August 30, 1994
    Assignee: U.S. Polymers, Inc.
    Inventor: Harout Ohanesian
  • Patent number: 5232712
    Abstract: Systems are disclosed for forming an extrudate. The systems include an extrusion head assembly having at least a first inner bore and a second outer bore, a coagulant solution supply and a polymeric casting solution supply. The coagulant supply provides coagulant to the inner bore of the extrusion head assembly, and the polymeric casting solution supply provides a casting solution to the outer bore. Using this system, the coagulant and polymeric solution are coextruded to form an extrudate having a desired configuration. The present invention further includes a rapid action valve controlling at least one of the coagulant or polymer supplies.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: August 3, 1993
    Assignee: Brown University Research Foundation
    Inventors: John F. Mills, Nicholas F. Warner
  • Patent number: 5040960
    Abstract: An apparatus for the production of encapsulated bodies employing a dropping tank for a fluid to form the cores of the encapsulated bodies and a reaction tank containing a solution capable of forming gel skins upon contact with the core material in communication therewith. Double-walled cylindrical nozzles are arranged in a lower part of the drop tank, the inner and outer walls of the double-walled cylindrical nozzles being coaxial. A pressurized air feed pipe is in communication with an upper part of the dropping tank. The peripheral walls of the reaction tank are in the form of a double-walled cylinder whose upper peripheral portion of its inner wall contains a screen. A liquid feed pipe and a capsule discharge port are provided in communication with the interior of the reaction tank through lower parts of the double-walled cylinder. A liquid discharge port also is provided in communication with an annular spacing of the double-walled cylinder through its outer wall.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: August 20, 1991
    Assignee: Snow Brand Milk Products Co., Ltd.
    Inventors: Toshiaki Shioya, Yasuhiko Shiinoki
  • Patent number: 4923380
    Abstract: An apparatus for the production of a collagen tube to be used as a vascular prostheses or nerve suture, including a cylindrical tubular spinneret having a feed end for an aqueous solution of collagen gel and a discharge end and a coagulant tube concentrically disposed in the spinneret with all around circumferential clearance and terminating upstream of the discharge wherein a tube of aqueous acid collagen gel is extruded through the clearance around the coagulant tube. The coagulant tube has its inner wall contacted with a coagulating solution emerging therefrom before the tube of aqueous collagen gel reaches the discharge end of the cylindrical tubular spinneret. The discharge end of the tubular spinneret terminates in a bath of coagulating solution and a bed is disposed in the bath to receive the extruded collagen tube from the end of the tubular spinneret. The tubular spinneret is capable of being displaced with respect to the bath.
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: May 8, 1990
    Assignee: Bioetica, S.A.
    Inventors: Alain Huc, Rene Gimeno
  • Patent number: 4850835
    Abstract: A cooling device for plastic granulate which is formed by cutting plastic strands emerging from a nozzle plate of an extruder and is fed to a stream of cooling water which adjoins the nozzle plate in the region of a cutting device. A pipe conducts the stream of cooling water containing the granulate to a granulate-water separator. In order to obtain a well-defined, infinitely adjustable dwell time of the granulate in the stream of cooling water, the pipe is essentially developed as a vertically arranged riser having a larger cross section passage area than that of the pipe itself. The upper outlet end of the riser is connected to the suction side of a feed pump, which serves as a section pump, and to a suction pipe which has an end connected to ambient atmosphere. A regulating valve is connected in the suction pipe. The delivery side of the feed pump communicates with the granulate-water separator.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: July 25, 1989
    Assignee: Werner & Pfleiderer GmbH
    Inventor: Joachim Rudolph
  • Patent number: 4298565
    Abstract: A process for preparing high strength, high modulus aromatic polyamide filaments by extruding an acid solution containing at least 30 g. per 100 acid of an aromatic polyamide having an inherent viscosity of at least 4 and chain extending bonds which are either coaxial or parallel and oppositely directed through a layer of inert noncoagulating fluid into a coagulating bath and then through a spin tube along with overflowing coagulating liquid is improved by jetting additional coagulating liquid symmetrically about the filaments in a downward direction forming an angle .theta. or to with respect to the filaments within 2.0 milliseconds from the time the filaments enter the spin tube, the flow rates of both the jetted and overflowing coagulating liquid being maintained at a constant rate such that their momentum ratio .phi. is from 0.5 to 6.0 and the mass flow rate of total coagulating liquid is from 70 to 200 times the mass flow rate of the filaments.
    Type: Grant
    Filed: February 12, 1980
    Date of Patent: November 3, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Hung H. Yang
  • Patent number: 4251195
    Abstract: Apparatus for making miniature capsules having a capsule-forming orifice defined by the open ends of two coaxial conduits. The inner conduit defines a central opening in the orifice and the outer conduit defines an annulus circumferentially of the central opening. Filter-content material for the individual capsules is extruded as a stream through the central opening and a settable coating liquid material is extruded as a thin film sleeve circumferentially of the filler-content material stream. The film sleeve and the stream of filler-content material pass through a cooling liquid which is flowed through a fixed nozzle downstream of the extruding orifice. The nozzle has an inlet section with converging inner surfaces and a uniform diameter downstream of the inlet section. The cooling fluid, the film sleeve and filler-content stream therein all pass through the nozzle.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: February 17, 1981
    Assignee: Morishita Jinta Company, Limited
    Inventors: Toshiyuki Suzuki, Kuniaki Matsumura, Hiroshi Maeda, Akira Imai, Nobuo Kurokawa