With Casting, Plastic Molding, Or Extruding Means Patents (Class 156/500)
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Patent number: 4969967Abstract: A packing comprising first and second opposed surfaces in a closure area of the packing has profiled portions secured to and extending over each of the opposed surfaces, which profiled portions are adapted to be releasably interengaged to permit connection and disconnection of the opposed surfaces. The profiled portions are each formed integrally with an outer layer of a strip material secured to the associated one of the opposed surfaces. The outer layer of the strip material is formed of a material well suited for forming a peel seal weld with the other opposed surface of the packing, such as a portion of the outer layer of the opposing strip material. The outer layer of each strip material is secured to the one of the first and second opposed surfaces via a base layer of the strip material to which the outer layer is secured by means of a non-peel seal type connection. As a result, the sheet material of the packing, a bag for example, need not be formed of a peel seal weldable material.Type: GrantFiled: January 18, 1989Date of Patent: November 13, 1990Assignee: Schurpack, Inc.Inventors: Leif B. Sorensen, Soren H. Sorensen
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Patent number: 4968377Abstract: A process for transforming a cylindrical electrical part into a component having at least one flat surface, suitable for use as a surface mounted device.Type: GrantFiled: October 27, 1988Date of Patent: November 6, 1990Inventor: Georg Sillner
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Patent number: 4957585Abstract: A manufacturing device has an outer chamber in which a tool is mounted. The tool is shaped to receive a thermoplastic or staged prepreg. The tool has heaters embedded within it. The chamber region between the tool and the inside wall of the chamber is filled with polysilicone polymer and pressurized to a low pressure such as 50 pounds per square inch. To insure prepreg compaction the chamber is then pressurized in the range of 3,000 pounds per square inch. The chamber to insure prepreg compaction is then pressurized and as is the polysilicone polymer to a pressure in the range of 3,000 psi. At the completion of the temperature/pressure cycle, the cured product is removed from the tool.Type: GrantFiled: January 23, 1989Date of Patent: September 18, 1990Assignee: Texas Instruments IncorporatedInventor: Louis R. Semff
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Patent number: 4940504Abstract: A method of and apparatus for simultaneously extruding a coating comprising a plurality of layers of dissimilar plastic compounds having substantially different melting points onto a moving electrical conductor wherein the plastic compounds are mechanically and thermally separated and the conductor is centered in the plastic jackets by a center trim guide, said trim guide having replacable guide tips. Separating the two plastics prevents thermal degradation of the two extrudates by causing their melt temperatures to remain substantially constant.Type: GrantFiled: September 6, 1988Date of Patent: July 10, 1990Assignee: Southwire CompanyInventor: Ralph E. Starnes, Jr.
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Patent number: 4929304Abstract: An apparatus for manufacturing an automotive seat, comprising a revolvable body, plural padding securing members or plural upper molding dies provided around the revolvable body, and a horizontally movable plural lower molding dies disposed under the revolvable body, the lower molding dies being movable horizontally relative to said revolvable body.Disclosed also is a method for manufacturing an automotive seat, using such apparatus.According to those apparatus and method, the manufacturing steps are carried out smoothly, with one step being effected during another step, and by virtue of the lower molding dies being horizontally moved, the apparatus can be installed in a small place.Type: GrantFiled: January 23, 1989Date of Patent: May 29, 1990Assignee: Tachi-S Co., Ltd.Inventors: Muneharu Urai, Hiroyuki Makino, Makoto Shimada
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Patent number: 4929409Abstract: Method in manufacturing a heat insulated tube includes a tube (17) for conducting fluid and a sheath (12) enclosing said tube, a heat insulating material (15) being disposed between the fluid tube and the sheath. The sheath is being extruded in an angle extruder die (10) while the fluid tube and the heat insulating material enclosing said tube are being fed axially through the angle extruder die as the sheath is being extruded around the heat insulating material. Then the sheath (12) extruded from the angle extruder die is kept spaced from the heat insulating material (15) enclosing the fluid tube (17), over an initial length of the axial movement thereof up to chains of chill molds (13) for imparting to the sheath a corrugated shape by forming the sheath against the chains of chill molds under the influence of negative pressure. The invention also relates to a device in extruders having an angle extruder die (10) for the manufacture of the heat insulated tube.Type: GrantFiled: February 3, 1989Date of Patent: May 29, 1990Assignee: Oy Uponor ABInventors: Lennart Agren, Eino Holso
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Patent number: 4927482Abstract: A method and an apparatus for producing laminated profile strips from a plurality of rubber components destined to be used in automotive vehicle tires are disclosed. The individual rubber profile strips, formed from various mixtures are each extruded from individual extrusion devices. Each extrusion device has its own extrusion head having an appropriate nozzle outlet which delivers each strip onto its own individual roller. The edges of each strip are trimmed while it is on its roller. The rollers are disposed adjacent one another so as to define roller nips therebetween. The component strips are subsequently laminated together in the nips to form either an intermediate or final profile strip. If an intermediate strip is produced, this remains on one of the rollers and is jointly passed through a further nip between the roller on which is located and a further roller carrying either a further individual strip or a further intermediate profile strip produced in a like manner to produce the final strip.Type: GrantFiled: November 4, 1988Date of Patent: May 22, 1990Assignee: Hermann Berstorff Maschinenbau GmbHInventor: Gerd Capelle
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Patent number: 4923541Abstract: An improved method and apparatus for the manufacturing of advanced composite tubes involving the steps of wrapping various layers, including a composite layup, around an elongated mandrel, placing the mandrel with layers applied in a tubular female mold, expanding the diameter of the mandrel, thus forcing the various layers to compress against the surface of the female mold.In order to remove excess resin from the layup this method also incorporates a resin absorbing layer which is wrapped around the mandrel prior to the composite layup. In addition, all the layers necessary to produce the tube are wrapped around the mandrel with a wrapping apparatus in which the various layers are first placed flat on a sheet. The sheet is then pulled around the mandrel, mechanically transferring the various layers to the perimeter of the mandrel. This method results in the formation of high quality composite tubes with smooth external surface finishes.Type: GrantFiled: October 22, 1988Date of Patent: May 8, 1990Inventor: George Burger
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Patent number: 4923555Abstract: Two sheets of material are laminated together using a heat-activatable or moisture-curing adhesive by:(a) forming a layered composite of the material with a layer of the adhesive in between;(b) passing steam (preferably superheated) through one sheet of material into the adhesive layer;(c) compressing the heated composite before the adhesive sets;(d) releasing the pressure on the composite; and(e) allowing the adhesive to fully cure.A laminating machine is disclosed that pulls the composite between two open weave belts, past narrow jets of the steam.Type: GrantFiled: August 22, 1988Date of Patent: May 8, 1990Assignee: Astechnologies, Inc.Inventors: George M. Elliott, Ervin L. Watford, Jr., George W. Howell
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Patent number: 4917749Abstract: Device for the continuous manufacture of manufactured articles reinforced with mixtures of hydraulic binders and consisting of:a conveyor belt;a plurality `A` of process stations for the formation of superimposed thin and uniform layers of a net of a hydraulic binder mix, each station consisting of:a feeder of the reinforced net 4;a wetting and degassing device 5 of the net 4;a means 2 for metering the binders mix;a section 7 for feeding and laying the net 4 on the conveyor belt 1;compacting elements 16;a means 6 for the extraction of water during the compacting state; anda second metering device 2' for the hydraulic binders mix;a levelling and sizing station 23;a final water-extracting station 26;a pressing station 27;a longutudinal and cross-cutting station 35, anda gathering station 36 for the produced plates.Type: GrantFiled: January 29, 1988Date of Patent: April 17, 1990Assignee: Mopfelan S.p.A.Inventors: Andrea Vittone, Giuseppe Chiappini, Massimo Di Paola
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Patent number: 4909875Abstract: The invention relates to multiple glazing, a method for obtaining the same and a device for using said method. The glazing contains two sheets of glass separated by a space of dehydrated air and maintained by a cross-braced frame, of which at least the surface in contact with the glass is a butyl and/or polyisobutylene rubber-based mastic and is covered with a peripheral injection, which adheres in a cohesive manner to the mastic of the cross-braced frame.Type: GrantFiled: January 24, 1989Date of Patent: March 20, 1990Assignee: Saint-Gobain VitrageInventors: Michel Canaud, Philippe Dewitte
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Patent number: 4908090Abstract: Apparatus for the pressure-forming and curing of polymer products incorporates two moulds (1) and a forming device, the moulds (1) being sturdily linked to each other with provision for setting the separating distance as required and for revolving on a fulcrum pin (9) so that the material of a circular product can be wound therearound. The moulds (1) are semicylinders which face each other with their flat sides and are sturdily interlinked by two parallel plates (2) so as to form integrally therewith a sturdy building core having a contoured outside surface. The forming device is a girdling structure which embraces the semicylinders (1) and the plates (2) circumferentially and is made up of at least two elements at least one whereof is located with provision for radial displacement in the course of pressure-forming.Type: GrantFiled: September 17, 1987Date of Patent: March 13, 1990Inventors: Gennady G. Kozachevsky, Valery V. Guskov, Vladimir P. Boikov, Jury N. Gorodnichev, Svetlana I. Sizova, Viktor A. Moroz, Isaak Y. Kachur, Alexandr S. Kholmovsky, Nadezhda V. Lapshina
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Patent number: 4908084Abstract: An upholstery wrapping apparatus and method using a mold having a flexible lip around the open top of the mold cavity so that as a substrate and covering therefore are pushed down into the cavity, the lip deflects and then snaps back to force the flexible margin of the upholstery to wrap around to the back side of the substrate.Type: GrantFiled: November 18, 1988Date of Patent: March 13, 1990Inventor: Kenneth Assink
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Patent number: 4906310Abstract: A method of extruding a continuous profiled fastener onto a thermoplastic film substrate, and more particularly, a method for the continuous bonding of a profiled fastener assembly to a thermoplastic cuff film substrate through the intermediary of hot extrusion.Type: GrantFiled: December 21, 1988Date of Patent: March 6, 1990Assignee: Mobil Oil CorporationInventors: Kevin Broderick, Fox J. Herrington, Donald Stell
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Patent number: 4904323Abstract: Making jacketed pipe using metal strip coated with a plastic coating compatible with the jacket material. After the strip is formed into tube by turning over longitudinal edges of the strip, the jacketing material is then extruded onto the tube under an extrusion pressure insufficient to cause tube collapse. This is conveniently done by the known "tubing" process. Subsequent to the extrusion step, the jacket material is subjected to radial inward pressure also insufficient to cause tube collapse. This pressure reduces the outside diameter of the jacket and presses it against the coating on the tube. The inward pressure step is performed while residual heat from extrusion remains at the inner surface of the jacket to fuse the jacket to the plastic coating. Inward pressure is preferably applied by a polishing die.Type: GrantFiled: September 15, 1988Date of Patent: February 27, 1990Assignee: Northern Telecom LimitedInventor: Serge Nadeau
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Patent number: 4902215Abstract: A process, and apparatus for the production of fiber reinforced plastic structures, particularly high strength fiber reinforced plastic structures via an improved vacuum assisted technique. In apparatus which includes a fluid impervious outer sheet, or bag, provided with a resin inlet, marginally sealed upon a mold to provide a chamber in which can be place a fiber lay up and which in turn is provided with a vacuum outlet there is provided a resin distribution medium for location on one side of the fiber lay up of character which permits on application of a vacuum the ready, continuous flow of resin via the resin inlet into the chamber to the marginal edges of said resin distribution medium. Closure of the outer sheet, or bag, with the fiber lay up is prevented by the presence of the resin distribution medium while the flow of resin is continued throughout the resin distribution medium, the resin applied to one side of the fiber lay up, and the resin cured.Type: GrantFiled: March 30, 1989Date of Patent: February 20, 1990Inventor: William H. Seemann, III
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Patent number: 4898635Abstract: A method and an apparatus for bonding parts of a disappearing model used for casting. This method comprises placing portions of parts of a disappearing model to be bonded so as to oppose each other to form portions to be adhered, surrounding the portions to be adhered by an injection mold frame which is previously formed, has an internal shape that accords with the external shape of the portions to be adhered and comprises a receiving mold and an injection mold that has an injection hole formed therein to allow an adhesive to be injected, and injecting the adhesive into the portions to be adhered from the injection hole.Type: GrantFiled: October 12, 1988Date of Patent: February 6, 1990Assignee: Morikawa Sangyo Kabushiki KaishaInventor: Toshiaki Kobari
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Patent number: 4892470Abstract: An apparatus permitting formation of a flanged product with the wider flanged portion in engagement with a foraminous transporting device. The apparatus uses a mold-like former having a narrower or smaller portion separated from the foraminous surface by a wider flange forming portion. The flange forming portion is adjacent to the foraminous surface and is separated from the foraminous surface after pad formation leaving the formed pad behind.Type: GrantFiled: February 16, 1989Date of Patent: January 9, 1990Assignee: Johnson & JohnsonInventors: Allan P. Farrington, Gerald M. Marshall
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Patent number: 4888082Abstract: A method and apparatus for applying hot melt adhesive to the parting surfaces of sections of a foam pattern employed in the lost foam metal casting process includes an adhesive applicator operable to dispense a layer of adhesive in a desired pattern onto a transfer surface. The parting surface of a section of a foam pattern is then brought into engagement with the transfer surface so that at least a portion of the adhesive adheres to the parting surface for assembly with a mating section of the foam pattern. The adhesive remaining on the transfer surface after engagement with the parting surface is scraped off and a new layer of adhesive applied in preparation for another section of the foam pattern.Type: GrantFiled: October 31, 1986Date of Patent: December 19, 1989Assignee: Nordson CorporationInventors: Raymond M. Fetcenko, Jan Wydro, Ralph P. Zuponcic
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Patent number: 4880370Abstract: An extrusion die for the extrusion of a multilayer thermoplastic foil or plate in which a stack of die plates is provided and each plate has an inlet fitting on a respective side of the rectangular outline of the die connected to a respective extruder and a broadening channel opening at an outlet along another edge of the respective plate. The outlets are located on the same side of the stack and open into a common die lip from which the multilayer extrusion emerges at an elongated slit for the broad-mouth die. The broadening channels of the upper and lower plates are sickle shaped and extend inwardly from the respective inlets mirror-symmetrically to receive a median plane along which the inlet of the broadening channel of the central plate is provided.Type: GrantFiled: October 14, 1988Date of Patent: November 14, 1989Assignee: Reifenhauser GHBH & Co., MaschinenfabrikInventor: Klemens Krumm
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Patent number: 4876132Abstract: A process is described for installing an automobile glazing by direct gluing in which an extrusion nozzle deposits an adhesive mass in bead form on one of two surfaces to be glued. The bead can either be used directly for gluing or, after hardening, act as a profile placed on glazing which is used as an intermediary between the glazing and a second gluing bead. Embedded within the bead are a plurality of high tensile strength flexible wires. During the removal of the glazing the wires are used to shear the bead where they have been introduced, i.e., either in profile or in the second gluing bead. The wires are positioned so that each has to shear only a part of the section of profile or of the bead.Type: GrantFiled: July 8, 1988Date of Patent: October 24, 1989Assignee: Saint-Gobain VitrageInventor: Heinz Kunert
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Patent number: 4871409Abstract: An apparatus for laying a continuous helically wound strip (30) of elastomeric material around a mandrel (11) to form a cylindrical ply thereon. The apparatus comprises a head unit (17) mounted on a carriage (18) for movement during the laying of the strip. The head unit (17) has a body (22) with a pair of calender rolls (24) (25) thereon to receive the strip (30) and produce therefrom a strip of uniform thickness. A support means (28) is pivoted to the body (22) and has an application roller (27) thereon that receives the calendared strip and lays the strip ont the mandrel. The application roller is arranged to exert a light load on the strip as it is wound onto the mandrel.Type: GrantFiled: November 5, 1987Date of Patent: October 3, 1989Assignee: Apsley Metals LimitedInventor: David J. B. Perkins
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Patent number: 4867671Abstract: An apparatus for manufacturing a resin tube comprising: (a) a support means; (b) a central support by the support means and extending therefrom; (c) a pair of operating means supported by the central shaft at two separate positions; (d) a plurality of rotatable forming rolls each supported by the operating means at both ends thereof in such a manner that the rotatable forming rolls are arranged circularly around the central shaft and that a cylindrical envelope formed by the rotatable forming rolls has a radius changeable by operation of the operating means; and (e) a plurality of flexible link means each connected between one end of each rotatable forming roll and a driving means for simultaneously rotating the rotatable forming rolls in the same direction at any radius of the envelope. Because of this structure, the apparatus can manufacture a resin tube of any size simply by operating the operating means.Type: GrantFiled: October 8, 1987Date of Patent: September 19, 1989Assignees: U.C. Industry Co., Ltd., Tonen Sekiyukagku Kabushiki KaishaInventors: Akio Nagayoshi, Kiyoharu Nagayoshi
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Patent number: 4861399Abstract: Apparatus and methods for producing a novel fastener means of the type having a plurality of fastening means extending from bight portions 60 bonded to a backing material 48. Products fabricated with the novel fastener means. The apparatus generally comprises means for drawing an array of filaments 46, or other material, onto a forming wheel 14 having a plurality of grooves 28, and land zones 30 between the grooves, means for positioning a plurality of pins 42 against the filaments 46 and aligned with the grooves 28, means for urging the pins 42 into the grooves 28 and thereby forming loops 50 in the filaments 46, and means for placing a backing material 48 against the filaments 46 and bonding the backing material to the filaments at spaced locations. Pins 42 are trapped in spaces 53 between the filaments 46 and the backing material 48. The apparatus further includes means for releasing the pins from the spaces.Type: GrantFiled: November 4, 1987Date of Patent: August 29, 1989Assignee: Kimberly-Clark CorporationInventors: Gregory J. Rajala, Lon M. King
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Patent number: 4861411Abstract: In a method of producing a gel sheet for electrophoresis comprising a gel membrane acting as the medium for electrophoresis composed of a hydrophilic polymer having a uniform thickness, two sheets of transparent or translucent electrical inslating films disposed on the front and the rear surfaces of the gel membrane and two pieces of spacers disposed along two facing sides of the gel membrane, an end not provided with the spacer of the gel membrane is cut off to form a slot for loading samples, the improvement which comprises, punching the gel membrane, before one surface of the gel membrane is covered with said electrical inslating film yet, to form the portion corresponding to the slot for loading samples, pressing an adhering member on the cut piece of gel membrane thereby sticking at least an edge of the cut gel membrane piece thereon, and removing the adhering member holding the cut piece of gel membrane therefrom.Type: GrantFiled: September 19, 1988Date of Patent: August 29, 1989Assignee: Fuji Photo Film Co., Ltd.Inventor: Shigeru Tezuka
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Patent number: 4859264Abstract: The irrigation hose comprises two tubes disposed one within the other, at least one of the tubes being grooved. The ungrooved tube forms with the groove or grooves of the other tube continuous secondary ducts over the entire length of the hose. Inlet ports and outlet ports delimit in the secondary ducts sections of a predetermined length, each yielding a flow capable of continuously drip-irrigating a plant in the area to be irrigated. The outlet ports and the inlet ports are distributed along spiral lines if the secondary ducts are straight and along straight lines constituting generatrices of the hose if the secondary ducts run along spirals.Type: GrantFiled: April 22, 1988Date of Patent: August 22, 1989Assignee: Maillefer SAInventor: Bruno Buluschek
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Patent number: 4854840Abstract: A mold gate for an inner tube mold is provided with a plurality of apertures for selectively receiving valve stems therein for bonding to the inner tube. A plug is inserted into each of the nonselected apertures to enable the single gate to be used to cure inner tubes having different valve positions to eliminate changing the gate each time a different valve location is required for a given mold. When the valve stem receiving openings are in close proximity to each other an elongated plug is placed in an elongated gate aperture to selectively seal one of the two valve stem openings while enabling the other opening to remain unblocked for receiving a valve stem during the molding operation.Type: GrantFiled: February 25, 1988Date of Patent: August 8, 1989Assignee: The Firestone Tire & Rubber CompanyInventor: Stephen B. Hunter
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Patent number: 4854996Abstract: A method and an apparatus for producing multilayer panels. In the method for producing multilayer panels from extrudable plastic, two plastic strips are fed from extruders to a roll-arrangement and are joined together, with an inclusion of material therebetween. The purpose of the invention is to produce predeterminable patterns and structures upon introducing the material. In order to achieve this result, the material in the form of threads, is introduced individually and independently of each other into a gap in an arrangement of rolls, and the threads are aligned, by means of guide-means, in relation to each other and to the gap.Type: GrantFiled: March 8, 1988Date of Patent: August 8, 1989Inventor: Heinz G. Baus
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Patent number: 4854846Abstract: A method and apparatus of making a plurality of flexible hoses each having a preformed bend section between opposed ends of the hose that tends to return to the shape of its preformed bend section when unbent therefrom are provided, the method comprising the steps of winding a continuous length of a hose material around a pair of spaced apart substantially cylindrical posts so that a plurality of sections of the hose material extends between the posts, heat curing the hose material while the same is in the wound condition thereof on the posts, and, thereafter, cutting the plurality of hoses from the thus cured hose material so that each hose has the preformed bend section therein that was defined by its wound relation with the post, the step of winding the hose material around the posts comprising the step of orbiting the posts about an axis that is substantially parallel to the longitudinal axes of the posts.Type: GrantFiled: February 8, 1988Date of Patent: August 8, 1989Assignee: Dayco Products, Inc.Inventor: Donald L. Oglesby
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Patent number: 4846660Abstract: Pipe made from thermoplastic polymeric material and comprising a transversely corrugated outer wall and a smooth inner wall of constant diameter fusion welded to the inner crests of the corrugations of the outer wall is produced by an improved method involving simultaneous extrusion of two tubes, blow molding of the outer wall and fusion of the two walls while the inner wall is supported by an internal shaping and cooling mandrel. Even when the polymeric material is polyvinyl chloride, good fusion welds and lack of brittleness are achieved by the manner in which extrusion is carried out, control of the location at which the fusion welds are established, and the extrusion formulation. The finished pipe is characterized by the fact that, when the fusion welded areas have been cut for inspection, no line of demarcation between the materials of the two walls can be observed.Type: GrantFiled: September 4, 1985Date of Patent: July 11, 1989Assignee: Contech Construction Products Inc.Inventor: Hubert M. Drossbach
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Patent number: 4844967Abstract: A coated abrasive back up pad is disclosed that may be attached to different types of drive motor assemblies by a simple rearrangement of an adapter included in the back up pad. The back up pad may have passageways with offset portions in a foam layer of the pad positioned to communicate between openings in an abrasive disk attached to the back up pad and vacuum systems in various drive motor assemblies to which it may be attached. A novel method is disclosed for molding the back up pad to form such passageways which includes molding dies into the pad that can later be removed by compressing the foam layer so that the dies cut outlet openings through which they are then removed.Type: GrantFiled: October 14, 1988Date of Patent: July 4, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Edwin A. Goralski, David C. Roeker
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Patent number: 4842668Abstract: The invention relates to a method for the automated manufacture of laminated plastics products, in which a pack of superimposed layers of thermosetting material, for example, sheets of resin-impregnated paper, is first formed, and the pack is placed on a rigid support structure for supporting the pack and keeping it in the correct position; the rigid structure and the corresponding pack are supplied by gripping and transfer means to a moulding press which provides for hot-forming of the above pack and, when moulding is completed, the rigid structure and the respective thermoset plastics laminate are separated and directed to respective unloading stations.Type: GrantFiled: October 29, 1987Date of Patent: June 27, 1989Assignee: Monetti S.p.A.Inventor: Giovanni Monetti
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Patent number: 4838980Abstract: A method and apparatus of introducing and joining diaphragms in slotted walls. The slotted inner connecting pipe of one diaphragm is introduced into the slotted outer connecting pipe of another diaphragm. An apparatus for fusing together the two connecting pipes is placed within the interior of the inner pipe and can move through the latter. The apparatus has a heating device for heating and fusing the two connecting pipes together.Type: GrantFiled: April 10, 1987Date of Patent: June 13, 1989Assignee: Ed. Zublin AktiengesellschaftInventors: Eberhard Glaser, Eberhard Beitinger, Manfred Nussbaumer
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Patent number: 4835835Abstract: A synthetic resin resiliently flexible separable fastener strip adapted for attachment to a substrate, is thermoplastically extruded in continuous strip form and provided with a base surface to which is applied during extrusion an adhesive in fluent state, with the extruded strip and adhesive carried thereby being then concurrently cured so that the fastener as formed and the adhesive in a dormant state on the strip can be rolled into a storage roll. The material of the fastener strip and the material of the adhesive are selected to permit the adhesive on the strip to be reactivated when the strip is to be adhesively bonded to a substrate, without deformably affecting the fastener strip. By extruding the strip without base webs, a plurality such as at least four, separate complementary strips can be extruded from a single die for efficiently joining sets of the profile strips into separable fastener assemblies immediately after concurrent curing of the extruded strips and the reactivatable adhesive.Type: GrantFiled: December 24, 1987Date of Patent: June 6, 1989Assignee: Minigrip, Inc.Inventor: Russell J. Gould
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Patent number: 4832768Abstract: For producing a plastic film having a plastic fastener, with male and female interlockable profiles, and accessory strips, such as ribs and strips, in preparation of a reclosable plastic bag, there is provided a first forming die which extrudes the accessory strips, a separate second forming die which extrudes the fastener, a pair of nip rolls for press-bonding the accessory strips onto the surface of the film being fed in the vicinity of the first forming die, and a bonding roll for receiving the film with press-bonded accessory strips and the fastener from the second forming die placed onto the film surface such that the fastener is bonded to the surface of the film at the bonding roll by virtue of heat.Type: GrantFiled: August 11, 1987Date of Patent: May 23, 1989Assignee: Minigrip, Inc.Inventor: Katsuhito Takahashi
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Patent number: 4826547Abstract: A procedure that, with the help of at least one sealing nozzle (7) and at least one covering and stripping plate (10), permits the defect-free and bubble free filling of panes of insulating glass (1) with a paste-like sealing mass, even in the corner areas, is described.Type: GrantFiled: August 31, 1987Date of Patent: May 2, 1989Assignee: Lenhardt Maschinenbau GmbHInventor: Karl Lenhardt
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Patent number: 4826560Abstract: A process for continuous fabrication of thermoplastic webs from at least one extruded thermoplastic web heated to processing temperature. This thermoplastic web is cooled under the application of area pressure down to a temperature at which smoothing of the surface is terminated. A calibrating and smoothing mechanism in the device for performing the process according to the invention consists of a double-band press which includes an apparatus for conducting heat away from the thermoplastic web in the reaction zone in which the area pressure is applied.Type: GrantFiled: June 2, 1987Date of Patent: May 2, 1989Inventor: Kurt Held
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Patent number: 4822539Abstract: A method of and apparatus for controlled coextrusion of plastic bag making film and a reclosable fastener male profile comprising extruding the film through an orifice with which is aligned a profile orifice and one or more alignment rib orifices as well as one or more stablizing ridge orifice cooperating with the profile and/or rib orifices. The resulting extruded product provides a bag making material comprising a plastic film carrying the zipper profile and with one or more alignment ribs in spaced parallel relation to the profile, with a reinforcing ridge or ridges effecting stabilizing beam effect in respect to the alignment rib or ribs and/or the profile during the processing of the extruded product into its final bag making material form. The extrudate for the film and the extrudate for the alignment rib or ribs may be derived from separate sources so that different plastics of different density or characteristics may be supplied to the alignment rib or ribs.Type: GrantFiled: September 14, 1987Date of Patent: April 18, 1989Assignee: Minigrip, Inc.Inventors: Paul A. Tilman, Zdenek Machacek, Richmond Scott
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Patent number: 4820143Abstract: An apparatus and method for producing a conveyor belt made of urethane having reinforcement embedded therein which reinforcement permits the stretching of the belt under controlled conditions. The reinforcement consists of a fabric or a plurality of aligned strands that are embedded in the urethane body of the belt proper that allow for a controlled stretch in the conveyor belt under such fabric or cords limit the stretching of such belt.Type: GrantFiled: July 7, 1987Date of Patent: April 11, 1989Assignee: The BFGoodrich CompanyInventors: Richard E. Eroskey, Winthrop S. Worcester
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Patent number: 4816099Abstract: A method for the production of a composite pipe with at least the inner surface thereof covered with a plastic layer, comprising: forming a coiled metal sheet into a cylinder, during the conveyance of the metal sheet, by a cylindrical inner mold and at least one of a plurality of outer molds lined up in the direction of conveyance of the metal sheet, said outer mold having a housing composed of two separatable parts and being fitted around said inner mold with a fixed space; joining the side edges in the circumferential direction of said cylinder together; and extruding molten resin into a cylindrical shape over the inner surface of the cylinder from the inner mold, resulting in a composite pipe the inner surface of which is covered with a plastic layer.Type: GrantFiled: February 25, 1987Date of Patent: March 28, 1989Assignee: Sekisui Kagaku Kogyo Kabushiki KaishaInventor: Yasuo Yamabe
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Patent number: 4810429Abstract: A method and apparatus for the manufacture of optical transmission elements comprising a bundle of at least one light waveguide lead having a coating of filling material and receiving an outer envelope, characterized by the method, including applying a first coating of filling material to the bundle, stripping a portion of the material from the coated bundle, applying a second coating and then, subsequently applying the envelope. By stripping a portion of the first coating of filling compound or material, air or gas bubbles in the filling compound will be stripped from the coated bundle and reduce the chance of damage to the light waveguide leads.Type: GrantFiled: July 15, 1987Date of Patent: March 7, 1989Assignee: Siemens AktiengesellschaftInventor: Ernst Mayr
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Patent number: 4808366Abstract: A method and apparatus for placement of labels within the blow molds of an injection blow molding machine. The injection blow molding machine comprising a turret having plurality of circumferentially spaced surfaces, each of which supports a plurality of spaced core rods, a plurality of injection molds at an injection molding station for forming a plurality of preforms, and a plurality of blow mold sections at a blow molding station which close about the preforms so that the preforms can be blown outwardly against the confines of the mold to form hollow plastic articles. The blow molds include movable bases exposing the interior of the blow molds when the blow molds are closed about preforms on the core rods.Type: GrantFiled: October 1, 1987Date of Patent: February 28, 1989Assignee: Owens-Illinois Plastic Products Inc.Inventors: Ronald S. Kaminski, William F. Sido, Casimir W. Nowicki
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Patent number: 4802948Abstract: An interior trim component 1 for a motor vehicle comprises a base 2 of a fibrous base material of approximately 80% wood fibers and approximately 20% synthetic resin fibers, which is compressed and consolidated by the action of pressure and heat into the desired shape. Padding and/or a fabric insert 5 may be placed over selected areas of the surface of the base 2 and a sheet 7 of plastic material is bonded over the whole of the visible side of the base 2, the parts of the plastic sheet 7 overlying the insert 5 having a continuous impressed separation so that they may be removed. The fibrous base material which is in the form of fibrous fleece mats of approximately 20 to 30 mm thickness is consolidatd in a hot-pressing shaping tool at 4000 N/M.sup.2 and approximately 200.degree. C.Type: GrantFiled: December 5, 1986Date of Patent: February 7, 1989Assignee: Ford Motor CompanyInventors: Willibald Zimmermann, Klaus Hartmann, Heinz Wessel
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Patent number: 4798581Abstract: An apparatus for forming an elongated visually detectable element on a sheet of absorbent material comprising, a device for extruding at least one colored strand, and a device for placing the strand on the sheet.Type: GrantFiled: October 26, 1987Date of Patent: January 17, 1989Assignee: The Kendall CompanyInventor: James L. Jessup
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Patent number: 4797173Abstract: The purpose of the process and the apparatus of the invention is to face weld extruded thermoplastic moldings the end faces of which lie in a plane and the end face edges of which are juxtaposed in a coplanar fashion. The end faces are pressed against a heatable and coolable plate in which grooves are formed corresponding to the cross-section of the end face. The floor of the grooves is heated up to or above the melting temperature of the plastic. The entry of the grooves is thermally insulated from the floor region and, if necessary, can be cooled. When the end faces are sunk into the grooves, the plastic is melted. The plastic melt, rising in the groove, is cooled until solid in the thermally insulated entry region. Following the welding in the floor region, the floor region is cooled below the melting temperature, and the welded bundle is separated from the plate.Type: GrantFiled: June 16, 1986Date of Patent: January 10, 1989Assignee: ROHM GmbH Chemische FabrikInventors: Heinz Gross, Klaus E. Pohlmann, Harmut Schikowsky
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Patent number: 4793885Abstract: A sandwich of plural films of thermoplastic orientable polymers wherein the adjacent surfaces of each adjacent film pair are in direct face-to-face contact while being positively advanced is positively deflected into a temporarily generally uiniform zig-zag or pleated configuration, the deflecting forces being sufficiently strong that the films in the sandwich are cold welded together while being laterally stretched. The deflection into the temporarily pleated configuration can be repeated.Type: GrantFiled: July 9, 1984Date of Patent: December 27, 1988Inventor: Ole-Bendt Rasmussen
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Patent number: 4786351Abstract: A machine for laminating fabric (123) to open cell cushion foam (124) while forming design lines in the foam is disclosed. The machine comprises a top hollow die (21) having perforations (38) and a complementary, hollow bottom die (54) which also has perforations (130). Hot melt adhesive (125) is interleaved between fabric (123) and foam (124). Top die (21) is preheated to just below the melt point of adhesive (125); then dies (21) and (54) are closed against the layered workpiece, with top die (21) contacting the face of fabric (123). A shot of superheated steam, e.g., at 80 psig and 700.degree. F., is ejected from perforations (38) and (130) to melt adhesive (125). Then a vacuum is applied to the perforations to pull ambient air through the workpiece and cool it. The resolidified ashesive (125) holds foam (124) in its deformed shape and laminates fabric (123) to the foam.Type: GrantFiled: December 31, 1985Date of Patent: November 22, 1988Assignee: Astechnologies, Inc.Inventors: George M. Elliott, Archie Solomon, Michael L. Avery
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Patent number: 4784713Abstract: Appartus and method for forming hairpieces including a plurality of tubes through which hair strands are passed and curl is applied to the strands. The lower ends of the strands are brought into contact with an alignment plate and, when all of the hair strands contact the plate, the plate is removed out of the path of the strands and the strands are moved into bonding contact with a membrane, the upper ends of the hair strands being cut to a predetermined length.Type: GrantFiled: December 21, 1987Date of Patent: November 15, 1988Inventor: Gilbert F. Van Nieulande
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Patent number: H556Abstract: A continuous method of manufacturing a drainage system and apparatus therefore comprises a continuous assembly line which forms a plastic core material followed by continuously forming an envelope surrounding the formed plastic core and then sealing the stuffed envelope. In a preferred embodiment of the present invention, an extruder is used to transform granulated plastic material into sheet form. This plastic sheet is then fed directly into a plastic forming machine. The plastic forming machine will form a plurality of hills and valleys in the plastic sheet thereby defining a plastic core. Thereafter, continuous sheets of permeable fabric material are attached to the upper and lower surfaces of the formed core while the edges of the permeable fabric are secured to one another either by adhesive, sewing or any other suitable bonding method. Next, the draining system is either cut into desired lengths or rolled for shipping purposes.Type: GrantFiled: December 2, 1985Date of Patent: December 6, 1988Inventor: Paul L. Tarko
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Patent number: RE32949Abstract: Apparatus for molding a fiber-reinforced wheel construction having an imperforate disc structure. The wheel comprises a disc portion having reinforcing fibers in substantially random orientation disposed predominantly in planes perpendicular to the wheel axis, and a rim portion having directional first reinforcing fibers substantially parallel to each other and oriented circumferentially of or substantially parallel to the wheel axis, or both, and second reinforcing fibers which are substantially randomly oriented circumferentially of the wheel axis. An apparatus for molding the wheel features radially movable rim mold section and axially reciprocable disc mold sections all having mold surface contours for forming a molded composite wheel of desired configuration.Type: GrantFiled: November 16, 1987Date of Patent: June 13, 1989Assignee: Motor Wheel CorporationInventors: James A. Woelfel, Richard W. Smith