With Shaping Between Extruding And Cutting Steps Patents (Class 264/151)
  • Patent number: 6190590
    Abstract: A method and apparatus for forming a flanged polytetrafluoroethylene cuffed section from a tubular polytetrafluoroethylene graft. The flanged polytetrafluoroethylene graft is well suited for use as a distal bypass graft, for arteriovenous grafting, or as a hemodialysis access graft. The graft includes an integral terminal polytetrafluoroethylene flanged skirt or cuff section which facilitates an end-to-side anastomosis directly between an artery and the polytetrafluoroethylene flanged graft without need for an intervening venous collar or venous patch.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: February 20, 2001
    Assignee: Impra, Inc.
    Inventors: Scott Randall, Roy H. Tang, Albert L. Lamay
  • Patent number: 6090329
    Abstract: A method for producing colored concrete bodies, particularly colored concrete roof tiles, whereby pigment is added to the unprocessed concrete mix. In order to provide the production of permanently colored concrete bodies with reasonably priced pigments which are stable in outdoor exposure and are resistant to light, particularly UV, alkalis and heat. A cement compatible aqueous polymer dispersion in which organic pigment is dispersed is added to the unprocessed concrete mix. Suitable cement compatible polymer dispersions are aqueous polymer dispersions based on styrene and/or pure acrylate. Phthalocyanine and quinacridone pigments are particularly suitable as organic pigments.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: July 18, 2000
    Assignee: BRAAS GmbH
    Inventors: Andreas Drechsler, Daniel Neupert, Silke Werner
  • Patent number: 6048478
    Abstract: For the manufacture of bristle material for brushes with different types of plastic bristles, which are produced as continuous monofilaments by extrusion, different types of continuous monofilaments are combined in the composition desired for the finished brushes into a mixed strand and wound up and subsequently from the mixed strand is cut the bristle material required for the brushes.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: April 11, 2000
    Assignee: Pedex & Co GmbH
    Inventor: Georg Weihrauch
  • Patent number: 6027676
    Abstract: The present invention relates to a method of forming ornamented plastics articles and to articles formed by the method and relates especially but not exclusively to manufacture of items of furniture, building components and picture frame members. The method comprises firstly extruding a plastics article then re-moulding it in a hot stamp press. This enables highly complex forms of article to be manufactured with large dimensions and at much lower cost than is currently possible.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: February 22, 2000
    Assignee: Robobond Limited
    Inventor: Robert Detenon
  • Patent number: 5958164
    Abstract: A thermoplastic polyester resin is fed into a twin extruder, wherein a resin is heated for melting, thereby removing moisture in the resin by evacuating and sucking from a vent port thereof, injecting a foaming agent into the resin to which is pushed out as a foaming sheet and, after that, forming the foaming sheet which is divided into a forming body and a trimming loss, whereby the trimming loss is crushed to obtain crushed materials which are provided so as to put the materials into the twin extruder as collection materials and recycle them.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: September 28, 1999
    Assignee: Sekisui Kaseihin Kogyo Kabushiki Kaisha
    Inventors: Susumu Ishiwatari, Masahiro Tsubone, Takaaki Hirai, Masahiro Shindo, Kiyoshi Yoshioka, Nobuyuki Tsujiwaki
  • Patent number: 5928770
    Abstract: A tear/puncture resistant material made of polyethylene and polypropylene. The material is ideally suited for wrapping steel or many other uses. The material of the present invention includes four layers attached by lamination. The outer layer is woven polyethylene, which imparts tear resistance to the material. This outer layer is laminated to a layer of extruded polyethylene. This layer, which provides breaking and puncture resistance to the material, is laminated to a layer of polypropylene, which provides additional elasticity. The layer of polypropylene is laminated to an inner layer of polyethylene impregnated with a volatile corrosion inhibitor (VCI) such as sodium nitrite. This inner layer, which increases the puncture resistance of the material, provides corrosion protection to the wrapped object, e.g. a steel roll.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: July 27, 1999
    Inventor: Victor Manuel Quinones
  • Patent number: 5914080
    Abstract: A method and apparatus is provided for the in-line production of composite strand material and the conversion of at least a portion of the strand material into a composite product. The apparatus (10) includes a combining station (48) where glass fibers (14) with a second polymeric material (66) are combined to form composite strand material (16), and at least one mold (54) for receiving a portion of the composite strand material and forming the portion into a composite product. The apparatus also includes transfer equipment for moving the composite strand material from the combining station to the mold, which may include a computer-controlled robotic arm (52). In another embodiment, the apparatus includes a collecting device (18) for accumulating the composite strand material (16) in looped form and equipment for delivering the accumulated portion from the collecting device to the mold (54).
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: June 22, 1999
    Assignee: Owens-Corning Fiberglas Technology, Inc.
    Inventors: James V. Gauchel, Margaret Woodside, Frank J. Macdonald, Hellmut I. Glaser
  • Patent number: 5876656
    Abstract: With an auxiliary electrode having a shape corresponding to the end of a workpiece attached to an upper electrode of a high frequency heater for high-frequency heating the end of the workpiece extruded, the workpiece is high-frequency heated intensively and uniformly between the auxiliary electrode and the lower electrode. After heating, the end of the workpiece is molded into a predetermined shape by a couple of stamping molds.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: March 2, 1999
    Assignee: Toyota Gosei Co., Ltd.
    Inventors: Shinichi Goto, Masao Kobayashi, Hiroshi Iwasaki, Sadao Nada
  • Patent number: 5863478
    Abstract: The invention is concerned with a process for the production of cellulose fibers wherein a solution of cellulose in a tertiary amine-oxide is extruded through spinning holes of a spinneret, whereby filaments are extruded, the extruded filaments are conducted across an air gap, a precipitation bath and a drawing device whereby the filaments are drawn, the drawn filaments are further processed into cellulose fibers, the drawn filaments being exposed during further processing to a tensile stress in longitudinal direction not exceeding 5.5 cN/tex.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: January 26, 1999
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Hartmut Ruf, Christoph Schrempf
  • Patent number: 5792487
    Abstract: A corrugated plastic panel is produced by providing a plastic panel corrugation device whereby a plastic material is extruded, a cooled extrusion is formed by passing the extrusion through a cooling roller assembly, a corrugated extrusion is formed by passing the cooled extrusion through a forming roller assembly when the cooled extrusion has reached its impressionable temperature range, a corrugated extrusion is passed through a pulling roller assembly when the corrugated extrusion has reached its hardening temperature range, and a corrugated plastic panel is formed by passing the corrugated extrusion through an extrusion cutting assembly.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: August 11, 1998
    Assignee: Witt Plastics of Florida Inc.
    Inventors: Larry Lee Wenning, Charles L. Beatty
  • Patent number: 5779957
    Abstract: An article comprising a hydrated matrix containing 100 parts by weight of cement and around 80-120 and preferably around 100 parts by weight of sand with a grain size of less than 1 mm, and alkali-resistant reinforcing glass fibres in a proportion of around 3-4 wt %, preferably 3.5 wt %, relative to the hydrated matrix. The article, which has a density no greater than 1.85, may be used as a covering panel for buildings, and particularly as an imitation slate covering panel.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: July 14, 1998
    Assignee: Materiaux De Construction International
    Inventors: Claude Champomier, Pascal Soukatchoff
  • Patent number: 5776395
    Abstract: This details a production method for a blade for electrophotographic devices, made of thermosetting type polyurethane, including the steps of mixing and stirring the liquid polyurethane prepolymer which is a raw material component for a thermosetting type polyurethane polymer and the liquid crosslinking agent, discharging the mixture thereof into a die having a concave cross section in a molding drum, heating it via an endless belt which is in contact with the outer peripheral face of the molding drum and runs with the rotation of the drum 20 to continuously mold a banded blade molding S having a prescribed width, and cutting the blade molding to a prescribed length after cooling it down.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: July 7, 1998
    Assignee: Bando Kagaku Kabushiki Kaisha
    Inventors: Yoshinori Fujiwara, Takeshi Noda, Yuichi Shigechika, Toshiharu Taniguchi, Arata Tani
  • Patent number: 5766529
    Abstract: High resiliency biodegradable starch-based extruded products and methods of manufacturing those products are provided. In particular, extruded starch products processed by rolling provide excellent resiliency, abrasion resistance and other properties attractive for use as packaging materials.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: June 16, 1998
    Inventors: Hans G. Franke, Donald R. Bittner
  • Patent number: 5738816
    Abstract: A method for making a flexible carrier tape for storage and delivery of electronic components by an advancement mechanism is disclosed. The tape includes a strip portion having a top surface, a bottom surface opposite the top surface, and a device for engagingly receiving the advancement mechanism; and a plurality of aligned pockets for carrying the electronic components. The pockets are spaced along the strip portion and opening through the top surface. The device for engagingly receiving the advancement mechanism includes a plurality of hollow protuberances that are spaced equally along the strip portion, open through the strip portion, and extend outwardly from the strip portion. The protuberances are adapted to receive the advancement mechanism within the hollow portion. The method includes simultaneously thermoforming the pockets and the protuberances to provide excellent registration therebetween.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: April 14, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Dale R. Tidemann, Thomas Skrtic, Scott L. Ciliske
  • Patent number: 5707474
    Abstract: A method for manufacturing a hinged sheet having an inorganically filled structural matrix includes mixing together a water-dispersible organic polymer binder, an inorganic aggregate material, a fibrous material, and water in order to form a moldable inorganically filled mixture in which the components therein are substantially homogeneously dispersed. The inorganically filled mixture is formed into a substantially hardened sheet having an inorganically filled matrix in a manner such that the water is removed by evaporation. The sheet is then scored to form a hinge in the inorganically filled matrix. Alternatively, a score can be pressed into a surface of the sheet prior to drying in order to form a scored sheet which is then dried.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 13, 1998
    Assignee: E. Khashoggi, Industries
    Inventors: Per Just Andersen, Simon K. Hodson
  • Patent number: 5690876
    Abstract: A system for the continuous production of asphalt-based roofing shakes which are tapered and embossed to resemble wood shakes in looks and function; and the shake made thereby. The continuous production system hot-mixes and extrudes the ingredients in a tapered layer on a conveyor belt for embossing and cutting. The system permits wood-shake type variety in size and appearance. The preferred shake includes perlite as a filler and chopped glass fibers as a reinforcer and may be internally colored.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: November 25, 1997
    Inventor: Francis Anthony Gallo, Jr.
  • Patent number: 5665284
    Abstract: A process for fabricating an article having a rigid foam core and a resilient outer plastic shell by extruding heated thermoplastic material to form the shell, partially hardening the extruded a plastic shell, injecting a liquid foam material into the interior of the partially hardened plastic shell, and cooling the shell and the liquid foam material to fully harden the plastic shell and the foam under conditions which cause the article to have a predetermined shape and size.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: September 9, 1997
    Assignee: Ronald D. Erwin
    Inventors: Ronald Dean Erwin, Marvin Ray Whitley
  • Patent number: 5653923
    Abstract: This invention produces three-dimensional shapes such as window lineals by first lining a foam die with a continuously moving reinforcing veil. Once the veil is in the foam die, a foam is blown into the die. The foam expands in the die forcing the veil against the die wall. The veil is selected so that the foam never fully penetrates the veil, but adheres to it. The material exiting the foam die is now properly shaped to enter the curing die. Resin is then injected onto the foam core where it penetrates the veil, is cured in the heated curing die and exits as a finished product of a plastic skin adhered to a foam core with a veil sandwiched therebetween.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: August 5, 1997
    Assignee: Owens-Corning Fiberglas Technology, Inc.
    Inventors: Kevin J. Spoo, Arthur Blinkhorn, Vyacheslav S. Grinshpun, George Smith, Terry Beaver
  • Patent number: 5620641
    Abstract: Sheath-core bicomponent fibers comprising a core of a low-cost, high strength, thermoplastic material, preferably polypropylene or polybutylene terephthalate, completely covered with a sheath formed of polyethylene terephthalate or a copolymer thereof are produced, preferably melt blown to an average diameter of 12 microns or less, and formed into a self-sustaining, three-dimensional, porous element having various applications, principally as an ink reservoir element for a marking or writing instrument, although the porous element may also find utility as a tobacco smoke filter. Other forms of the product have utility in diverse applications where its excellent capillary, absorption and filtering properties are advantageous. The resultant products retain or improve upon the desirable features and processing capabilities of conventional elements, but are substantially less expensive, requiring less high cost polyester for equivalent or better properties.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: April 15, 1997
    Assignee: American Filtrona Corporation
    Inventor: Richard M. Berger
  • Patent number: 5618476
    Abstract: Pre-stressed concrete railroad ties are manufactured by the slip form process in the absence of mold members, other than the slip form itself. Tie casting occurs on portable casting soffits between portable soffit anchored deadmen supporting the pre-stressed tie tensile members immediately overlying the casting soffit. Tie formation occurs with the slip form passing around and over the pre-stressed tension members. Track fastening hardware is vibrationally inserted through windows of the slip form to place the track fastening hardware to precise measured dimension along the route of slip form movement and to configure that portion of the tie adjacent the track fastening hardware. End of tie locations as well as tie batch identification are likewise marked during the slip form process. Upon cure, the ties are cut at their marked end location.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: April 8, 1997
    Inventor: Richard L. Mogel
  • Patent number: 5601765
    Abstract: Crimped fibres of solvent-spun cellulose are made and checked for damage in a method in which:i) cellulose is dissolved in an amine oxide solvent to form a hot cellulose solution,ii) the hot cellulose solution is extruded through a die assembly to form a tow of continuous filaments,iii) the tow is passed through a water bath to leach out the amine oxideiv) the tow is crimped by passing through a stuffer box in which it is compressed to apply crimp,v) dry steam being injected into the stuffer box during the crimping process, andvi) the crimped tow leaving the stuffer box is passed through detection means in whichvii) a beam is projected across the path of travel of the tow and is received by receiving means on the opposite side of the tow, the receiving means being calibrated to initiate a signal if obscurement of the beam by the tow varies beyond a predetermined amount.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: February 11, 1997
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventors: Alan Sellars, Ronald D. Payne, Penny E. Letts, Neville P. Bluckert
  • Patent number: 5595698
    Abstract: A method of making the tile dispenses wet concrete having two different colors into a partitioned pug box for disposition onto opposite sides of a pallet, so that, the two different colors reside on opposite sides of the pallet in side-by-side relation. The wet concrete is metered and compressed by a roller and shaped by a slipper to provide the concrete tile with a desired cross-sectional shape, following which the concrete is then chopped by a knife assembly to form the individual tiles with desired edge configurations. The concrete is cured and then removed from the pallets to form the completed tiles. The method may be incorporated into a continuous process in which a succession of the pallets are passed by a conveyor beneath a making head assembly containing the partitioned pug box and the roller and slipper and then beneath a knife assembly to form a succession of the concrete tiles.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: January 21, 1997
    Assignee: Monier Roof Tile, Inc.
    Inventors: Thomas G. Nicholas, Scott W. Fechner
  • Patent number: 5582843
    Abstract: In a system for the production of solvent-spun cellulose tow, trash and other undesirable material is detected by a device which projects a light beam across the tow and a receiver for the beam which initiates a signal if the beam is obscured beyond a predetermined amount.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: December 10, 1996
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventors: Alan Sellars, Malcolm J. Hayhurst
  • Patent number: 5500175
    Abstract: Process and product for manufacturing continuous fiber reinforced sheets and shapes. A pressurized extrusion process consisting of a paired and edge enclosing doctor blades that remove feed material from a pair of pinch rolls and contain such in an optimally heated environment and which provides suitable hot dies and enables extrusion of continuous reinforcements, cores or threads to be contained in the extrudite. Hopper feedable plastic pellets containing reinforcing fibers which are longer than the largest pellet dimension are disclosed. The fibers in an elongated web of fiber reinforced plastic are caused to be wrinkled or folded prior to cutting the web into pellets. One form of apparatus includes a set of conveyor rollers for moving the web, with later rollers moving more slowly that the input rollers, in conjunction with a crowding doctor blade which forces the web with a creping action from the input rollers.
    Type: Grant
    Filed: November 2, 1994
    Date of Patent: March 19, 1996
    Inventor: Rexford H. Bradt
  • Patent number: 5478516
    Abstract: A method of forming an elongated trim strip product includes extruding a first strip of thermoplastic material from a die having an outlet with an area at least substantially as great as the desired cross-sectional area of the strip product in planes perpendicular to the direction of extrusion. Immediately subsequent to the step of extruding and while the extruded strip is still in a plastic state, it is passed longitudinally between cooperating forming rolls to shape the cross section of the extruded strip to the desired shape and cross section of the strip product. Further, while passing between the rolls a logo or lettering is formed on the strip. While the extruded strip is passing between the cooperating forming rolls, a backing strip of foil or thin metal is directed between the rolls in alignment with the extruded strip to bond the backing strip to the extruded strip.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: December 26, 1995
    Assignee: The Standard Products Company
    Inventors: Douglas N. Malm, Johnny R. Socausky, Lorne J. McLelland
  • Patent number: 5476630
    Abstract: Method of manufacturing a dental aspirator by extruding a continuous tube with a bellows portion. The tube is angled to form a number of folds, each of which consists of two cup-shaped portions having concave surfaces facing each other. One cup-shaped portion is made smaller than the other, allowing them to be snapped together. The bellows are formed from the tube wall by chilled mold chains. At the same time, the tube is profiled to form an end portion at the suction end of the finished aspirator.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: December 19, 1995
    Inventor: Ernst Orsing
  • Patent number: 5474819
    Abstract: A hollow, heat-recoverable article 1, for enclosing objects such as electronic components etc. has a thermoplastic lining on its interior surface and includes a fusion bonded portion 2 in which different parts of the article have been brought together and bonded by fusion of the lining with substantially no welding of the heat-recoverable material forming the wall. The lining has a melting point that is higher than the recovery temperature of the article, thereby enabling subsequent recovery of the article without rupture of the bonded portion.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: December 12, 1995
    Assignee: Raychem Limited
    Inventors: Derek R. Chambers, Michael Carpenter
  • Patent number: 5468439
    Abstract: In a process for manufacturing finite extruded profiles (3) from elastomer material with at least one projecting sealing lip (12) of different contour (32) over the length of the profile, for simple and very accurate manufacture the invention proposes that by means of two needles (10, 11) which act laterally on the sealing lip (12) and whose depth of contact (a) is controlled by a cam disk (5), the specified contour configuration (32) in the corresponding profile area (12) is incised in the form of grooves and the projecting profile section (38) severed after vulcanization (FIG. 1).
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: November 21, 1995
    Assignee: Metzeler Automotive Profiles GmbH
    Inventor: Jurgen Kranz
  • Patent number: 5460771
    Abstract: A method for producing polymeric tubing which is resistant to permeation by organic material contained therein which has at least one region defined by a plurality of outwardly extending annular ridges. In this method, tubular polymeric material having a first outer diameter and composed of at least three overlying polymeric layers is introduced into a mold device upon exit of the tubular polymeric material from a suitable extrusion device, the surface of the mold device having at least one region defined by an annular depression in an essentially cylindrical surface. Once the tubular material is introduced, it is expanded to a second outer diameter such that the tubular material deformably contacts the mold surface. The corrugated tubular material then exits from the die device after completion of the expansion step.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: October 24, 1995
    Assignee: ITT Corporation
    Inventors: Frank L. Mitchell, David L. Noone
  • Patent number: 5433419
    Abstract: The production process of the present invention can significantly suppress the fuzzing on the surface of the composite material and substantially prevents the accumulation of fractured fibers in the nozzle causative of the breaking of a strand and so on, so that it becomes possible to enhance the take-up speed of the strand and so on, and can provide a long-fiber-reinforced composite material excellent in the dispersion of the fibers in the composite material and the impregnation of a resin. The process comprises impregnating a continuous reinforcing fiber with a molten thermoplastic resin while pulling the fiber, and is characterized in that, after the fiber is impregnated or coated with a molten resin, the resultant fiber is continuously pultruded while squeezing excess resin and the pultruded fiber is passed through a shaping nozzle to regulate the shape to a desired one.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: July 18, 1995
    Assignee: Polyplastics Co., Ltd.
    Inventor: Haruji Murakami
  • Patent number: 5419867
    Abstract: A seamless tube useful in making a roofing batten is extruded from a polymeric material consisting essentially of a major amount of poly(ethylene terephthalate) and a minor amount of at least one polyolefin, flattened in a vacuum sizer so as to define two plies, and milled and drawn so as to orient the tube longitudinally. As milled and drawn, the tube is oriented so as to have a tensile strength of at least about 25,000 psi in a longitudinal direction. The plies are punched so as to have holes therethrough at spaced intervals along the tube. When used to make a roofing batten to coact with conventional fasteners, such as roofing screws, the tube exhibits superior characteristics of split resistance and pull-through resistance.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: May 30, 1995
    Assignee: Illinois Tool Works Inc.
    Inventors: Donald L. Van Erden, Juergen O. Rathgeber, Parimal M. Vadhar, John P. Wojcik
  • Patent number: 5419695
    Abstract: Apparatus for forming a net device for encompassing a balled end of a tree includes an extruder from which a continuous strip of plastic material is discharged, a compression section for embossing a pattern on at least one surface of the strip, a tensioning section for providing a tension on the pattern strip and a cutting section for cutting the strip into narrow elongate net devices.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: May 30, 1995
    Inventor: Samuel E. Clegg
  • Patent number: 5409653
    Abstract: A method of forming an elongated trim strip product by extruding a first strip of thermoplastic material from a die having an outlet with an area at least substantially as great as the desired cross-sectional area of the strip product in planes perpendicular to the direction of extrusion. Immediately subsequent to the step of extruding and while the extruded strip is still in a plastic state, it is passed longitudinally between cooperating forming rolls to shape the cross section of the extruded strip to the desired shape and cross section of the strip product. While the extruded strip is passing between the cooperating forming rolls, a backing strip of foil or thin metal is directed between the rolls in alignment with the extruded strip to bond the backing strip to the extruded strip.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: April 25, 1995
    Assignee: The Standard Products Company
    Inventor: Douglas N. Malm
  • Patent number: 5395575
    Abstract: Production line and method for manufacturing strips of foil stabilized plastics moldings featuring a rotary reform machine that has a pair of reform wheels that are rotatably driven to profile the extrudate while matching the output speed of extrudate exiting from the extrusion die of a plastics extruder. The wheels have equal diameters and are motor driven at the same angular velocity so that forming dies in the wheels synchronize and cooperate to pressure mold spaced sections of the extrudate feeding therethrough to form high quality end corners with an offal section therebetween. A haul-off pulls the strip from the extruder die, the rotary reform machine, a water trough and flash trimmer and into a cutter where the offal is removed. The strip is maintained under a predetermined tension load by use of an adjustable friction brake on the stabilizer foil so that the heated plastics exiting the extruder will be uniform in initial profile, providing high quality extrudate feeding into the reforming wheels.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: March 7, 1995
    Assignee: General Motors Corporation
    Inventors: Bruce J. Stribbell, Donald L. Franck
  • Patent number: 5391342
    Abstract: A method is provided for forming an apex filler including extruding a substantially linear elastomeric strip having a base and a pair of sidewalls converging from the base to an apex. The sidewalls of the elastomeric strip are then engaged with a nip presented by a pair of opposed frusto-conical rollers and a base support. The rollers are rotated to work the elastomeric strip whereby the base of the strip is rotated at a first linear speed, the apex is rotated at a second, greater speed and the sidewalls are rotated at linear speeds substantially proportional to the distance from the base to the apex, thereby forming an apex filler.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: February 21, 1995
    Assignee: Heico Aluminum Products, Inc.
    Inventors: Dale R. Moody, Robert A. Cronin
  • Patent number: 5366578
    Abstract: A generally continuous strip of thermoplastic material is cold formed into a desired preformed configuration while retaining continuity with the generally continuous strip to form a chain of preformed configurations remaining continuous with the generally continuous strip of thermoplastic material. End portions of the chain are severed so as to form a cartridge of preformed configurations to be used in the formation of a cartridge of fitments.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: November 22, 1994
    Assignee: Robert Systems, Inc.
    Inventors: William Z. Vanhook, John T. Roberts, Larry J. Mattson
  • Patent number: 5349804
    Abstract: A seamless tube useful in making a roofing batten is extruded from a polymeric material consisting essentially of a major amount of poly(ethylene terephthalate) and a minor amount of at least one polyolefin, flattened in a vacuum sizer so as to define two plies, and milled and drawn so as to orient the tube longitudinally. As milled and drawn, the tube is oriented so as to have a tensile strength of at least about 25,000 psi in a longitudinal direction. The plies are punched so as to have holes therethrough at spaced intervals along the tube. When used to make a roofing batten to coact with conventional fasteners, such as roofing screws, the tube exhibits superior characteristics of split resistance and pull-through resistance.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: September 27, 1994
    Assignee: Illinois Tool Works Inc.
    Inventors: Donald L. Van Erden, Juergen O. Rathgeber, Parimal M. Vadhar, John P. Wojcik
  • Patent number: 5350554
    Abstract: A method and apparatus for producing light-weight construction panels having a cementitious core layer surfaced with a layer of reinforcing fabric bonded to the two faces of the core includes the use of slurry applicator having a supporting member and a doctor in addition to a moving carrier for the slurry coated fabric. The edges of the panel also are covered with the fabric and may be open mesh edges. Cementitious slurry, for example, portland cement slurry, is applied to the fabric by means of a supporting member over which the fabric is drawn and a doctor means adjustably mounted above the supporting member. The supporting member is of a non-base-reactive material such as polypropylene or stainless steel; the use of such a supporting member permits better application of the slurry to the fabric before placement of the slurry coated fabric on the moving carrier.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: September 27, 1994
    Assignee: Glascrete, Inc.
    Inventor: Robert G. Miller
  • Patent number: 5342188
    Abstract: A device (10) for crimping and cutting dough ropes into pillow-shaped longitudinal lengths is disclosed including a cutting roller (12) and an anvil roller (14). The peripheries (22, 24) of the rollers (12, 14) include a plurality of axially extending, spaced, parallel, linearly straight lands (26, 30) separating, forming, and defining a plurality of grooves (28, 32) therebetween. Compressible tubes (46) are stretched between end plates (36) located on the opposite axial ends of the cutter roller (12) and positioned in each of the grooves (32) thereof. The tubes (46) are compressed in the grooves (32) by the dough ropes as they are being crimped and cut by the abutment of the lands (26, 30) of the rollers (12, 14) together and expand and force the pillow-shaped longitudinal lengths of dough from the grooves (32) when the lands (26, 30) of the rollers (12, 14) separate.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: August 30, 1994
    Assignee: General Mills, Inc.
    Inventor: Craig E. Zimmermann
  • Patent number: 5328651
    Abstract: A method for manufacturing an automobile trim component includes the step of coextruding a plastic unfoamed material and foamed material into a multilayer parison, which is thereafter blow molded to a desired form. After the layers are cured, the article is removed from the blow mold and sectioned into multilayer skin halves, and one skin is placed in an injection mold. The core resin, either thermoplastic or thermoset in nature, is then injected into the injection mold and onto the skin, and then compresses the resin against the skin to produce a shell comprising a resin core layer, intermediate foam layer, and decorative outer layer.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: July 12, 1994
    Assignee: Davidson Textron Inc.
    Inventors: Michael J. Gallagher, Douglas Nobbs
  • Patent number: 5326520
    Abstract: A thin ribbon of paint film is guided and applied directly to hot thermoplastics extrudate just as it exits the extrusion die by a film curving and guide plate and then by a film application wheel that is adjusted so that the film mates with and is laminated to the extrudate with an adhesive bond between the paint film substrate and the extrudate. This eliminates the need for high gloss, high metallic content thermoplastics for use as extrudate such as currently used for finished automotive side molding and allows reground thermoplastics to be used as the extrudate and finished with a paint film covering. The thermoplastic extrusion molding is then compression formed in a preform operation to establish end corners with selected radii for corner sharpness as well as reshape the part cross section. This is accomplished with a die and end cap construction which can be relatively adjusted to provide effective gas venting around the end of the die cavity on die closure.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: July 5, 1994
    Assignee: General Motors Corporation
    Inventors: Donald L. Franck, Edward J. Wenzel, Edward Stachowicz
  • Patent number: 5316717
    Abstract: A process for making gelatine films, in particular sheet gelatine, from powdered gelatine includes the following steps: The powdered gelatine with the addition of water is plasticized by the application of shearing forces at an elevated pressure and an elevated temperature, the plasticized mass is pressed in the form of a film through a slotted die, the film is drawn off the slotted die under tension and the taut film is dried.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: May 31, 1994
    Assignee: Deutsche Gelatine-Fabriken Stoess AG
    Inventors: Peter Koepff, Klaus Braumer, Helmuth Stahl, Eberhard Dick
  • Patent number: 5240664
    Abstract: The present invention is directed to a door weather strip in which the corner portions thereof are integrally formed with straight portions thereof. In order to obtain a predetermined sealing interference, the cross sectional shape of the corner portions of hollow sealing portion and the lip seal of the weather strip is arranged to be longer than that in the straight portion. Alternatively, the sealing portion is raised as to have a predetermined shape when the corners are formed. Said formed shapes are solidified by vulcanization after the weather strip has been plastically deformed before the vulcanization.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: August 31, 1993
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Keizo Hayashi, Masami Yamada, Masahiro Nozaki
  • Patent number: 5238632
    Abstract: A method for the operation of a thermoforming machine in which successive sections of a thermoforming web are formed includes the steps of continuously feeding a thermoformable web of plastics material into the entry of the thermoforming machine from an exit support roll of a substantially horizontal run portion of a conveyor, the exit support roll being movable forwardly in the direction of movement of the web and rearwardly in the opposite direction so as to respectively extend and retract the length of the horizontal run portion of the conveyor with the web flow speed at which the web is deposited initially on the conveyor and with the movement of vertically opposed male and female forming tools which are part of the thermoforming machine and which are able to advance and retract horizontally respectively in and against the web movement direction and to move vertically perpendicular to their horizontal movement.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: August 24, 1993
    Assignee: Hitek Limited
    Inventors: Andrew J. Watters, John L. Waite
  • Patent number: 5225132
    Abstract: A continuous, non-hesitant apparatus and process for producing a molded body of plastics material and for simultaneously securing the molded body to a tubular body by means of a plurality of heading units mounted in series on a continuous conveyor, each heading unit having a mold cavity associated with the mold arm slidably positionable with respect to a mandrel arm having a mandrel, press rod and mold core secured thereto, the mold core and press rod in coaxial alignment with the mold cavity, each of which responsive to a camming surface, the tubular body positioned on the mandrel and brought in registration with a continuous web of hot plastics material which is positioned at one end of the tubular body, the tubular body and mold core then positioned within the mold cavity responsive to the camming surfaces for a time sufficient to form the molded body and secure the molded body to the tubular body, the molded body and tubular body then released from the heading unit, the heading unit recirculating to obtai
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: July 6, 1993
    Inventor: Richard C. Farina
  • Patent number: 5223200
    Abstract: A method for making concrete roof tiles includes the steps of forming a continuous elongated ribbon or layer of concrete; cutting the continuous layer into a row of spaced end to end ribbon sections having a front edge and a rear edge; precompacting the front edge of one of two adjacent ribbon sections and compacting the precompacted front edge of the other ribbon section.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: June 29, 1993
    Assignee: Braas GmbH
    Inventors: Hans E. Schulz, Jurgen Braas
  • Patent number: 5213741
    Abstract: A pattern roll especially adapted to form, in an in-line manner, peripheral edges of an article having substantially constant geometry and the pattern roll's method of fabrication are described. A bounded surface region is defined on at least a portion of a pattern roll's cylindrical surface by means of a number of circumferential and longitudinal (relative to the pattern roll's central axis) segments. Beveled surfaces are formed on these rib segments with the angle formed by the beveled surface of the circumferential segment being less that the angle formed by the beveled surface of the longitudinal segment. Notwithstanding this angular difference as between the beveled surfaces of the circumferential and longitudinal rib segments, when the pattern roll is then rotated in opposition to a platen roll so as to define a nip therebetween, and a molten thermoplastic is extruded into the defined nip, a plastic product having a peripheral beveled edge of substantially constant geometry will be formed.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: May 25, 1993
    Inventor: Edward S. Robbins, III
  • Patent number: 5198161
    Abstract: A parison thickness control system includes an extruder die and a mandrel which are movable relative to each other to change wall thickness of a parison extruded between the extruder die and the mandrel during an extrusion or forming cycle of the parison. A parison control pattern is derived by manually inputting master points each defined in terms of a target parison wall thickness and an elapsed time during the parison extrusion cycle. A further parison control pattern is derived by performing the spline interpolation to interpolate between the master points. A still further parison control pattern is derived by correcting the above-noted further parison control pattern to allow the maximum or minimum value of the master points to indicate a limit value for the target parison wall thickness during the parison extrusion cycle. The parison extrusion cycle is divided into a given number of equal time intervals to define cycle points.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: March 30, 1993
    Assignees: Kao Corporation, Tahara Machinery Ltd.
    Inventors: Masashi Ogura, Yutaka Saito, Masayuki Akimoto, Minoru Oizumi
  • Patent number: 5171499
    Abstract: A method of forming an elongated trim strip product by first extruding a first strip of thermoplastic material from a die having an outlet with an area at least substantially as great as the desired cross-sectional area of the strip product in planes perpendicular to the direction of extrusion. Immediately subsequent to the step of extruding and while the extruded strip is still in a plastic state, it is passed longitudinally between cooperating forming rolls to shape the cross section of the extruded strip to the desired shape and cross section of the strip product. While the extruded strip is passing between the cooperating forming rolls, a backing strip of foil or thin metal is directed between the rolls in alignment with the extruded strip to bond the backing strip to the extruded strip.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: December 15, 1992
    Assignee: The Standard Products Company
    Inventors: Edward C. Cehelnik, Loren A. Easterday, James Neligan, Mark A. Remington, Johnny R. Socausky, Douglas N. Malm
  • Patent number: 5169464
    Abstract: A condom having a blow formed tubular main sheath portion, and a method for making the condom. Blow extrusion techniques of fabrication are described, together with the use of various thermoplastic materials of construction, including polyurethanes, polyether block amides, styrene-rubber-styrene block copolymers, ethylene-octene copolymers, and polyesters. The condom is made by blow extruding a tubular film of thermoplastic material to form a main sheath portion, severing the main sheath portion into one or more condom pieces, and sealing one end of each piece.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: December 8, 1992
    Assignee: Family Health International
    Inventors: Robin G. Foldesy, Robert G. Wheeler