Corrugating Patents (Class 264/286)
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Patent number: 6818167Abstract: In a method of manufacturing a rubber crawler through a first vulcanization step and a second vulcanization step using an upper mold, a middle mold and a lower mold, at least the middle mold is heated at each vulcanization step, and a vulcanizing circumferential length at the first vulcanization step is made longer than that at the second vulcanization step, and the second vulcanization step is carried out at a state that each end portion of the crawler part formed at the first vulcanization step is positioned by at least one pitch rate in each mold at the second vulcanization step and the distance between the upper and lower molds is made larger than that in the first vulcanization step.Type: GrantFiled: March 26, 2003Date of Patent: November 16, 2004Assignee: Bridgestone CorporationInventor: Yasuaki Fujita
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Patent number: 6773647Abstract: The present invention relates to a high speed embossing and adhesive printing process, said process comprising the steps of (a) applying an adhesive to a conformable heated glue application roll; (b) applying said adhesive to a first patterned embossing roll, having an outer surface, which is engaged with a second patterned embossing roll having a complementary pattern to said first embossing roll; (c) passing a web of sheet material between said first and second embossing rolls at a tangential line speed to simultaneously emboss said web and apply said adhesive to said web, such that said adhesive forms an adhesive pattern between embossments; and (d) applying a renewable release agent to the outer surface of the first patterned embossing roll.Type: GrantFiled: January 10, 2002Date of Patent: August 10, 2004Assignee: The Procter & Gamble CompanyInventors: Kenneth Stephen McGuire, Stephan Gary Bush
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Patent number: 6767493Abstract: It is to provide a method of manufacturing a rubber crawler which enhances a degree of freedom in the handling in a vulcanization-shaping of a crawler part and largely improves vulcanization shapability and operability and facilitates an arrangement of an auxiliary device or the like.Type: GrantFiled: November 8, 2002Date of Patent: July 27, 2004Assignee: Bridgestone CorporationInventor: Yasuaki Fujita
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Patent number: 6759001Abstract: A method for producing an embossed PVA film, which includes embossing the film such that the crystallinity index of the emboss top is 0.50-0.90. The invention provides an embossed PVA film superior in resistance to blocking even when in a rolled state, in appearance to show the high quality of products, and in resistance to pinholes.Type: GrantFiled: May 17, 2001Date of Patent: July 6, 2004Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventors: Tomoyoshi Mizutani, Syuichi Kitamura, Kenji Hasegawa, Manabu Miyato, Hideki Oono
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Patent number: 6699347Abstract: The present invention provides a process comprising the steps of (a) applying less than about 0.1 grams per square meter (gsm) of a release agent to a transfer surface, wherein the release agent is selected such that a test sample of the release agent having a concentration at or above its critical surface tension concentration, has a surface tension of less than about 50 dyne/cm or forms a contact angle with the material of the transfer surface of less than about 120°; (b) applying an adhesive to the transfer surface; and (c) transferring the adhesive from the transfer surface to a material web. Preferred embodiments are provided where the transfer surface is metals, polymers, elastomers, ceramics, wood, or combinations thereof and the release agent has the formula: X—CF2O—(C2F4O)p—(CF2O)q—CF2—X. Additional embodiments are provided to continuous and intermittent processes.Type: GrantFiled: May 20, 2002Date of Patent: March 2, 2004Assignee: The Procter & Gamble CompanyInventors: Mary Ruth Lehrter, Steven Lee Barnholtz, James Michael Singer, Glenn David Boutilier, Andrew Julian Wnuk, Dean Arthur Zimmerman, Timothy Jude Lorenz
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Publication number: 20030235680Abstract: A method utilized in rolling up materials. In particular, the invention relates to method of rolling corrugated sheets of material. More particularly, the invention relates to a method of rolling pre-formed corrugated sheets of thermoplastic based material. The present invention relates to a method of rolling sheets of thermoplastic material that comprises providing a pre-formed sheet of thermoplastic material, forming a plurality of corrugations on said pre-formed sheet of thermoplastic material; wherein the corrugated shape is made up of inwardly and outwardly extending undulations, rolling the corrugated sheet of thermoplastic material from a first end to a second end; wherein the undulations of a first layer are nestable with the undulations of each subsequent layer of the pre-formed corrugated sheet thermoplastic material.Type: ApplicationFiled: June 21, 2002Publication date: December 25, 2003Inventor: Artin Zakarian
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Patent number: 6656400Abstract: A method for producing a pleated filter material from a nonwoven fabric having spacers for the pleated folds formed from the filter material itself, a formed fabric made of stretched synthetic fibers and thermoplastic and/or thermally cross-linked binding agent being heated in an oven to a temperature lying at least in the softening temperature range and/or the cross-linking temperature range of the binding agent, and subsequently, the formed fabric being formed between profiled calender rolls and cooled simultaneously.Type: GrantFiled: March 28, 2001Date of Patent: December 2, 2003Assignee: Firma Carl FreudenbergInventors: Klaus Veeser, Anthony Hollingsworth, Dirk Dantz
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Patent number: 6602454Abstract: The present invention provides a process which in a preferred embodiment includes the steps of.Type: GrantFiled: January 11, 2001Date of Patent: August 5, 2003Assignee: The Procter & Gamble CompanyInventors: Kenneth S. McGuire, Stephan Gary Bush
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Publication number: 20030111768Abstract: The invention relates to a method of continuously fabricating a coaxial cable in which ring-shaped corrugations are imparted to a conductor of the cable in a corrugator. The corrugator is made to operate at constant speed.Type: ApplicationFiled: December 18, 2002Publication date: June 19, 2003Inventors: Thierry Estienne, Gerard Besnier, Jean-Paul Duc
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Patent number: 6579404Abstract: A method of making precision geometry honeycomb material formed of a composite material and exhibiting dimensional uniformity, is disclosed. Composite material is molded in the cavity of a single-sided female mold to form a first web with a plurality of honeycomb cell portions of the desired cell shape in the web. The details of the cavity mold configuration are captured to form the honeycomb cell portions in the composite material during molding the web by applying pressure to the composite material in the mold with an elastomeric pressure intensifier. The composite material of the web is stabilized as by curing. First and second molded webs are precisely aligned in a fixture and joined together at facing cell nodes thereof by bonding yielding a honeycomb material with superior geometric platform.Type: GrantFiled: January 23, 2001Date of Patent: June 17, 2003Assignee: Northrop Grumman CorporationInventors: Richard A. Lewis, Richard C. Yocky, Michael Rivera
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Patent number: 6574938Abstract: A sandwich panel for high strength wall and covering assemblies, comprising at least a plate element and at least a fretted element, glued to the plate element, the fretted element comprising a sheet metal plate having a size substantially like that of the plate element and a cross-section having a profile including a plurality of adjoining integral trapezium shape elements each defining a top and a bottom flat portion.Type: GrantFiled: January 15, 1999Date of Patent: June 10, 2003Inventors: Donati Francesco, Donati Giuseppe, Oberti Pierrosario
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Publication number: 20030003833Abstract: An elastic composite sheet of the present invention has an extensible nonwoven fabric, and a thermoplastic elastomer layer bonded to one face of this extensible nonwoven fabric. The extensible nonwoven fabric is one acquired by applying extensibility giving work such as pleating work to a nonwoven fabric including non-elastic fibers, and has elongation of equal to or larger than 100% in at least one direction. The thermoplastic elastomer layer is bonded to the extensible nonwoven fabric in a pattern having a directional property in a direction in which the extensible nonwoven fabric has the elongation of equal to or larger than 100%.Type: ApplicationFiled: July 11, 2002Publication date: January 2, 2003Inventors: Kazuhiko Kurihara, Hiroshi Yazawa, Takashi Ishida
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Patent number: 6497754Abstract: A pleated filter is provided with electrically conductive fibrous material that releases ions to improve trapping efficiency. The edges of folded filter media are rendered emitting as by attaching conductive strings to the edges of the folds. The ends of the fibers in the strings are left exposed and, by applying high voltage on these strings, ions may be produced which charge dust particles to improve the filter's efficiency. Alternately, the pleated medium itself provides ion-emitting fiber ends along folded edges that have been rendered conductive.Type: GrantFiled: April 4, 2001Date of Patent: December 24, 2002Inventor: Constantinos J. Joannou
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Publication number: 20020180097Abstract: An embossing and adhesive application process including the steps of: applying an adhesive to a first patterned embossing roll which is engaged with a second patterned embossing roll having a complementary pattern to the first embossing roll; passing a web of sheet material between the first and second embossing rolls at a tangential line speed to simultaneously emboss the web and direct the adhesive against the web; and splitting the adhesive such that at least some of the adhesive remains on the first embossing roll and some of the adhesive remains on the web to form an adhesive pattern between embossments on the web.Type: ApplicationFiled: May 31, 2002Publication date: December 5, 2002Applicant: The Procter & Gamble CompanyInventors: R. Matthew Giachetto, David Mark Sageser, Kenneth Stephen McGuire, Peter Worthington Hamilton, James Michael Archbold, Kevin Benson McNeil, Jeffrey Moss Vaughn, Timothy Jude Lorenz
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Patent number: 6451410Abstract: The present invention provides a sheet of crystallizable material, having opposed first and second surfaces, the sheet comprising: (a) a plurality of crystalline regions located in the first surface; and (b) an amorphous matrix surrounding and separating the crystalline regions from one another. The present invention also provides a method of making a flexible, cut resistant, and abrasion resistant sheet material, the method comprising the steps of: (a) providing a sheet of crystallizable amorphous material having opposed first and second surfaces; (b) crystallizing discrete regions of the first surface of the sheet of material, the discrete regions being separated from one another by a continuous amorphous matrix.Type: GrantFiled: July 20, 1999Date of Patent: September 17, 2002Assignee: The Procter & Gamble CompanyInventors: Kenneth Stephen McGuire, Peter Worthington Hamilton, Richard Tweddell, III, Richard Emil Hildebrand, IV, Geneva Gail Otten
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Publication number: 20020113339Abstract: A corrugator and mold management apparatus and methods for continuously forming transverse corrugations and other shapes in a tubular polymer melt parison formed by an extrusion die employs a plurality of molds that interlock when mated. Each mold has common outside dimensions and a pair of open linear bearings that provide the mold axis and maintain alignment of the molds parallel to and in the same horizontal plane as the axis of the extrusion die. The molds are moved axially along supported rails by bi-directional linear actuating modules and between the pairs of supported rails by lateral transport units. Inner supported rails define the mold tunnel and outer supported rails provide an outer path to move molds upstream back toward the extrusion die. The lateral transport units include extensible rails that facilitate the transfer of molds to and from the mold tunnel and the outer return paths. Delivery units remove from and introduce molds from a plurality of parking stations.Type: ApplicationFiled: February 19, 2001Publication date: August 22, 2002Inventor: Joseph M. Starita
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Patent number: 6436082Abstract: An absorbent article including an absorbent layer and a liquid-permeable surface sheet placed on a liquid-receiving side of the absorbent layer for introducing excreted liquid from the human body to the absorbent layer. The surface sheet is of a corrugated configuration to have valleys and peaks extending in a longitudinal direction of the article and alternately arranged in a transverse direction perpendicular to the longitudinal direction. Each peak is formed with spares parts and dense parts alternately arranged in the longitudinal direction. The surface sheet has a lower fiber density in the sparse parts than in the dense parts.Type: GrantFiled: November 7, 2000Date of Patent: August 20, 2002Assignee: Uni-Charm CorporationInventors: Satoshi Mizutani, Etsuko Tagami
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Patent number: 6431218Abstract: A multi-lumen hose including a corrugated peripheral wall including an interior area and having an inner surface which defines a diameter, and at least one substantially planar inner partition extending from the inner surface across at least half of the diameter of the peripheral wall so as to divide the interior area into a plurality of lumen and methods of manufacturing such hose.Type: GrantFiled: September 28, 2000Date of Patent: August 13, 2002Assignee: Vital Signs, Inc.Inventors: Mark E. Woelfel, Jack H. Britten
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Patent number: 6394144Abstract: The present invention relates to a polytetrafluoroethylene (PTFE) tube, and more particularly to a PTFE tube for a flexible hose. In particular the invention relates to a PTFE tube having a smooth bore for use in the production of a lined hose assembly farther comprising hose braids, external hose protection and end fittings. The PTFE tube comprises external roots and peaks, which tube is obtainable from a non-convoluted tube having an original wall thickness W0 and an internal diameter ID by a process in which a region of the tube is thinned to provide external convolutions with a root wall thickness W1 characterised in that the convoluted PFTE tube has an improved resistance, of greater than 7.6%, to permeation by comparison with the non-convoluted tube, the comparison being made between tubes of (i) equal nominal bore ID; and (ii) equal weight of PTFE per unit length.Type: GrantFiled: September 20, 2001Date of Patent: May 28, 2002Inventor: Andrew John Whitworth
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Patent number: 6394142Abstract: A multi-lumen hose including a corrugated peripheral wall including an interior area and having an inner surface which defines a diameter, and at least one substantially planar inner partition extending from the inner surface across at least half of the diameter of the peripheral wall so as to divide the interior area into a plurality of lumen.Type: GrantFiled: October 1, 2001Date of Patent: May 28, 2002Assignee: Vital Signs, Inc.Inventors: Mark E. Woelfel, Jack H. Britten
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Patent number: 6355200Abstract: The present invention relates to a method of and an apparatus for providing fluid distribution materials with improved wicking properties in a preferential fluid distribution direction. Such fluid distribution materials are particularly useful in absorbent core structures such as used in disposable absorbent articles like baby diapers, incontinence products or catamenial products. The invention is concerned with applying a special mechanical treatment to distribution materials, by which the softness and the fluid handling properties of the materials are improved.Type: GrantFiled: August 30, 1999Date of Patent: March 12, 2002Assignee: The Procter & Gamble CompanyInventors: Mattias Schmidt, Vincenzo D'Acchioli
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Patent number: 6340089Abstract: A screening screen assembly for a vibratory screening machine including an apertured plate, and a subassembly of an undulating support screen and fine screening screen and finer screening screen bonded to each other by a fused plastic grid and bonded to the apertured plate. A method of fabricating a screening screen assembly for a vibratory screening machine including the steps of providing a support screen, superimposing a plastic grid onto the support screen, superimposing a finer screening screen onto the fine screening screen, applying heat and pressure to the superimposed screens to fuse the plastic grid and thereby form a flat bonded laminate subassembly by causing the fused plastic grid to permeate the fine screen and the finer screen and the support screen, forming the bonded laminate subassembly into an undulating shape, providing an apertured plate, and bonding the undulating bonded subassembly to the apertured plate.Type: GrantFiled: February 2, 2000Date of Patent: January 22, 2002Assignee: Derrick Manufacturing CorporationInventor: John J. Bakula
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Patent number: 6200404Abstract: Compositions and methods for manufacturing sheets having a starch-bound matrix reinforced with fibers and optionally including an inorganic mineral filler. Suitable mixtures for forming the sheets are prepared by mixing together water, unmodified and ungelatinized starch granules, an auxiliary water-dispersible organic polymer, fibers, and optionally an inorganic mineral filler in the correct proportions to form a sheet having desired properties. The mixtures are formed into sheets by passing them between one or more sets of heated rollers to form green sheets. The heated rollers cause the auxiliary polymer to form a skin on the outer surfaces of the sheet that prevents the starch granules from causing the sheet to adhere to the rollers upon gelation of the starch. The green sheets are passed between heated rollers to gelatinize the starch granules, and then to dry the sheet by removing a substantial portion of the water by evaporation.Type: GrantFiled: November 24, 1998Date of Patent: March 13, 2001Assignee: E. Khashoggi Industries, LLCInventors: Per Just Andersen, Shaode Ong, Bruce J. Christensen, Simon K. Hodson
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Patent number: 6193918Abstract: The present invention provides a process which in a preferred embodiment includes the steps of: (a) applying a hot melt adhesive to a heated roll rotating at an initial tangential speed; (b) milling the adhesive to a reduced thickness and accelerating said adhesive through a series of metering gaps between a plurality of adjacent heated glue rolls; (c) applying the adhesive to a conformable glue application roll rotating at a tangential line speed which is higher than the initial tangential speed; (d) applying the adhesive to a first patterned embossing roll which is engaged with a second patterned embossing roll having a complementary pattern to the first embossing roll, the embossing rolls being heated; (e) passing a web of sheet material between the first and second embossing rolls at the tangential line speed to simultaneously emboss the web and apply the adhesive to the web, such that the adhesive forms an adhesive pattern between embossments; (f) transferring the web from the second embossing roll to thType: GrantFiled: April 9, 1999Date of Patent: February 27, 2001Assignee: The Procter & Gamble CompanyInventors: Kenneth S. McGuire, Stephan Gary Bush
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Patent number: 6136417Abstract: The present invention relates to a corrugator and corrugated fiberboard sheet manufacturing method which are capable of accurately adjusting the quantity of moisture included in a sheet to certainly suppress the warp deformation of the sheet with the passage of time. The corrugator has an adhering section equipped with a plurality of pressurizing units separately disposed in series along a sheet conveying direction, where a front linerboard and a rear linerboard are adhered to each other to form a corrugated fiberboard sheet and the corrugated fiberboard sheet formed in the adhering section is processed into a predetermined configuration in a processing section standing on the downstream side of the adhering section.Type: GrantFiled: October 29, 1998Date of Patent: October 24, 2000Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Hiroshi Ishibuchi, Hiroyuki Takenaka, Yukuharu Seki, Makoto Ando
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Patent number: 5996639Abstract: An apparatus and method of producing a multiple compartment corrugated hose with at least one inner corrugated partition. The corrugation of the inner partition is achieved by maintaining a predetermined ratio between the peripheral wall and the inner partition wall. The hose is produced using either a continuous blow molding with internal pressure and/or vacuum assist process where the inner partition is allowed to shrink and relax into a corrugated pattern. Such an hose is flexible in all directions and available for many applications.Type: GrantFiled: January 30, 1997Date of Patent: December 7, 1999Assignee: Action TechnologyInventors: Leo Gans, Ronald Presinzano
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Patent number: 5976665Abstract: The present invention relates to a liquid-permeable casing sheet (1) for absorbent sanitary articles, such as sanitary napkins, incontinence guards and diapers. According to the invention, the casing sheet (1) includes a first layer (2) which is corrugated across at least a central part of its surface so as to provide a row of mutually parallel waves having wave crests (3) and wave troughs (4), wherein the wave crests form an article contact surface with the wearer's body when the article is in use. The casing sheet also includes rows of through-penetrating openings (6) which extend perpendicularly to the corrugations or waves and each of which opening passes through a wave crest (3). The invention also relates to a method for producing such a casing sheet.Type: GrantFiled: April 8, 1997Date of Patent: November 2, 1999Assignee: SCA Molnlycke ABInventor: Roy Hansson
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Patent number: 5911939Abstract: An apparatus for forming grooves in the cylindrical surfaces of tubes or rods has a passage through the apparatus with a grooving roller mounted adjacent the passage. The roller has a helically extending ridge formed on its circumference, with the ridge extending into the passage and the roller being mounted for rotation about an axis inclined to the axis of the passage. The angle of inclination of the axis is such that the ridge, where it extends into the passage, runs at right angles to the axis of the passage. The roller is made to rotate about the tube or rod as the tube passes through the apparatus.Type: GrantFiled: December 17, 1996Date of Patent: June 15, 1999Assignee: Miniflex LimitedInventor: Peter David Jenkins
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Patent number: 5906879Abstract: A 3-dimension thermoformed bicomponent fiber nonwoven material comprising a lofty bicomponent material layer forming a plurality of peaks separated from one another by channels and having a basis weight in the range of about 0.5 to 7.0 ounces per square yard. The bicomponent material layer comprises a structural component and a heat activatable adhesive component suitable for thermoforming. Also disclosed are various configurations of this material suitable for use in absorbent personal care articles such as sanitary napkins, disposable diapers, incontinent-care pads and the like.Type: GrantFiled: April 30, 1997Date of Patent: May 25, 1999Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Andrew Edsel Huntoon, Mary Garvie Weber, Gordon Allen Shaw, Marshall Kenneth Bryant, Mark George Everson, Gerald Lewis Clark, Wanda Walton Jackson, Susan Marie Vanage, Mark Charles Jacobs, Pamela Jean Mayberry, James Arthur Davis, Douglas Bryan Cole, Stanley Michael Gryskiewicz, Ann Louise McCormack, Richard Daniel Pike, Leslie Warren Collier, IV, Frank Andrew Rosch, III, Scott Richard Lange
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Patent number: 5897824Abstract: In a single facer, the premoistened medium web is dried on both surfaces to a shallow depth immediately prior to passage through the corrugating nip. The dried shallow surface layers substantially decrease friction between the flutes of the corrugating rolls and the paper while the interior of the web is maintained in a moist condition necessary for formability.Type: GrantFiled: January 13, 1997Date of Patent: April 27, 1999Assignee: Marquip, Inc.Inventor: Carl R. Marschke
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Patent number: 5882462Abstract: A method for making a corrugated fiber reinforced preform for a corrugated channel is disclosed which involves the sequential application of fiber plies to a shaping tool, each of the plies individually formed to the contours of the shaping tool, using a corrugating tools, restraining means used to maintain the plies in conformance with the tool. The plies are then subjected to debulking and heated to stabilize the fiber plies in their shaped condition, with additional plies applied thereover using the same steps of application, forming, restraining and stabilizing to produce a thick debulked fiber preform which avoids wrinkling of the fibers at the radius between the web and side portions of the corrugated channel.Type: GrantFiled: June 25, 1996Date of Patent: March 16, 1999Assignees: Dow-United Technologies Composite Products, Boeing Defense and Space GroupInventors: Peter Gregory Donecker, Lawrence Nicholas Varholak, Jr., Mark John Schmitz, Harold Marion Goodridge, Jeffrey A. Lauder, Kirk Douglas Skaggs
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Patent number: 5876552Abstract: A screening screen assembly for a vibratory screening machine including an apertured plate or frame, and a bonded subassembly of an undulating support screen and fine screening screen and finer screening screen bonded to each other by a fused plastic grid and bonded to the apertured plate or frame. A method of fabricating a screening screen assembly for a vibratory screening machine including the steps of providing a support screen, superimposing a plastic grid onto the support screen, superimposing a finer screening screen onto the fine screening screen, applying heat and pressure to the superimposed screens to fuse the plastic grid and thereby form a flat bonded laminate subassembly by causing the fused plastic grid to permeate the fine screen and the finer screen and the support screen, forming the bonded laminate subassembly into an undulating shape, providing an apertured plate or frame, and bonding the undulating bonded subassembly to the apertured plate or frame.Type: GrantFiled: October 21, 1997Date of Patent: March 2, 1999Assignee: Derrick Manufacturing CorporationInventor: John J. Bakula
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Patent number: 5810961Abstract: Compositions and methods for manufacturing sheets having a starch-bound matrix reinforced with fibers and optionally including an inorganic mineral filler. Suitable mixtures for forming the sheets are prepared by mixing together water, unmodified and ungelatinized starch granules, a cellulosic ether, fibers, and optionally an inorganic mineral filler in the correct proportions to form a sheet having desired properties. The mixtures are formed into sheets by passing them between one or more sets of heated rollers to form green sheets. The heated rollers cause the cellulosic ether to form a skin on the outer surfaces of the sheet that prevents the starch granules from causing the sheet to adhere to the rollers upon gelation of the starch. The green sheets are passed between heated rollers to gelatinize the starch granules, and then to dry the sheet by removing a substantial portion of the water by evaporation.Type: GrantFiled: April 9, 1996Date of Patent: September 22, 1998Assignee: E. Khashoggi Industries, LLCInventors: Per Just Andersen, Shaode Ong, Bruce J. Christiansen, Simon K. Hodson
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Patent number: 5800765Abstract: A material transfer arrangement having a pair of generally cylindrical adjacent rolls which are counter-rotatable about their respective cylindrical axes and which define therebetween a nip between which material passes is disclosed. There is a corresponding pair of spaced apart doctor blades, each in close proximity to a corresponding one of the rolls so that material may be conveyed between the roll nip and the space between the doctor blades. In one form, the nip passes material to the space between the doctor blades and that space has a downstream restriction which causes the material to compress in an accordion-like way forming a corrugated material web. In another form, the doctor blades function to deliver thermoplastic extrudate to the nip between the rolls to form elongated sheets or webs of plastic material of improved uniformity.Type: GrantFiled: March 19, 1996Date of Patent: September 1, 1998Assignee: Materials Research Innovations CorporationInventor: Rexford H. Bradt
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Patent number: 5789103Abstract: A battery separator for use in flooded cell type lead acid batteries comprising a backweb of a porous, acid resistant, embossable material with a plurality of major ribs and submini-ribs extending from at least one planar surface of the backweb. The ribs are located across the width of the backweb and extend in a direction substantially parallel to the longitudinal edges of the backweb. Each major rib overlies at least one submini-rib and is an embossed corrugated structure comprised of alternating ridges and furrows. The ridges and furrows are in non-parallel alignment to the longitudinal dimension of the separator, and preferably perpendicular thereto. The major ribs are formed on a battery separator backweb having a plurality of submini-ribs extending from at least one planar surface thereof by passing the backweb through the nip formed by a pair of opposed embossing rollers and embossing the backweb in the area of at least one submini-rib.Type: GrantFiled: April 11, 1997Date of Patent: August 4, 1998Assignee: AMTEK Research International LLCInventors: James Young, Francis E. Alexander, Daniel E. Weerts
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Patent number: 5711909Abstract: An intravascular catheter carries a helical reinforcement member embedded within at least a portion of the tubular wall of the catheter. The helical reinforcement member comprises a helical first portion having coils of greater pitch than the pitch of helical coils of a second portion. Preferably, the catheter is for insertion into brain arteries, and comprises a flexible tube having an outer diameter of no more that about 0.05 inch, for example 3 French or smaller. The flexible tube defines outer and inner tubular layers. The inner tubular layer surrounds a catheter lumen and comprises chemically inert fluorinated polymer such as PTFE. The outer tubular layer comprises at least three longitudinally spaced, connected tubular sections. The sections are of successively increasing flexibility from the proximal toward the distal catheter end.Type: GrantFiled: May 9, 1996Date of Patent: January 27, 1998Assignee: Cordis CorporationInventors: Susana M. Gore, Mark Mueller, Nicholas Green, Jeffrey G. Gold, Peter P. Soltesz
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Patent number: 5693347Abstract: An apparatus for the manufacture of pipes of thermoplastic plastics having transverse profile features comprises mold segment halves guided by twos to circulate on a molding path. A conveying device is provided for the recirculation of the mold segment halves, working in the way of a gantry crane. On a conveying bridge overlapping the molding path, two conveying carriages are provided, which are displaceable in directions opposite to each other and at right angles to the direction of production and to each of which is attached a conveying arm directed downwards and having a holding device for a mold segment half.Type: GrantFiled: September 19, 1996Date of Patent: December 2, 1997Inventor: Ralph-Peter Hegler
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Patent number: 5679479Abstract: A battery separator for use in flooded cell type lead acid batteries comprising a backweb of a porous, acid resistant, embossable material with a plurality of ribs extending from at least one planar surface of the backweb. The ribs are located across the width of the backweb and extend in a direction substantially parallel to the longitudinal dimension of the backweb. Each rib is an embossed corrugated structure comprised of alternating ridges and furrows. The ridges and furrows are in non-parallel alignment to the longitudinal dimension of the separator, and preferably perpendicular thereto. The ribs are formed on a substantially flat battery separator backweb by passing the backweb through the nip formed by a pair of opposed embossing rollers.Type: GrantFiled: May 8, 1996Date of Patent: October 21, 1997Assignee: Amtek Research International LLCInventors: James Young, Francis E. Alexander
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Patent number: 5612111Abstract: A method of producing and the product of heat-proof laminate boards are disclosed. Each laminate board cut from a continuous laminate has a corrugated upper layer, a middle foam layer produced by spraying foam agent onto one side of the upper layer which will expand into shape automatically, a bottom layer having opposite edges folded in conformance to the corresponding edges of the upper layer so as to sealedly confine the foam in between the upper layer and bottom layer. The upper layer can be made of one of the materials including steel plate, PVC, PC, PP, aluminum plate, iron sheet. The bottom layer is made of materials including PVC film, PP film, papery film, fabric film, nylon film or wooden fiber sheet.Type: GrantFiled: May 30, 1995Date of Patent: March 18, 1997Assignees: Tienchi Trading Co., Ltd., Tung Yik Trading Co., Ltd.Inventor: Gary Lin
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Patent number: 5609942Abstract: A cross-corrugated panel has a core between two faceplates, where the core omprises two groups of corrugated elements that are perpendicular to each other. The corrugated elements have peaks and troughs connected by diagonally-extending segments. In each group of corrugated elements the peaks and troughs in adjacent elements are 180 degrees out-of-phase with each other. The faceplates and the corrugated elements in each group are joined at the peaks and troughs. The diagonally-extending segments of one of the elements comprise flat strips whose flat surfaces are parallel to each other and perpendicular to the faceplates. To make a cross-corrugated panel, a first group of elements is provided, each element being formed by oppositely winding two strips of curable material to form overlapping helixes having rectangular cross-sections. The elements are positioned in parallel. A second group of elements of curable material is placed perpendicular to the first group of elements.Type: GrantFiled: March 13, 1995Date of Patent: March 11, 1997Assignee: The United States of America as represented by the Secretary of the NavyInventor: Hemen Ray
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Patent number: 5582849Abstract: A travelling mold has mold blocks formed by opposing mold block sections which open and close relative to one another. The mold sections travel horizontally around a continuous track which is fitted with a plurality of side-by-side mold block carriers on which the mold block sections are releasably supported. The mold block carriers are provided with carrier gears which engage with the main drive gear of the mold so that the mold is driven by engagement of the drive gear with the carriers and not the mold block sections.Type: GrantFiled: May 6, 1994Date of Patent: December 10, 1996Inventor: Manfred A. A. Lupke
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Patent number: 5560941Abstract: An apparatus for the manufacture of corrugated pipes of thermoplastic plastics, which has circulating mold segment halves disposed in two opposite rows subsequent to an injection head, includes a wedge element for separating the mold segment halves. This wedge element is displaceable parallel to the direction of production. Further, grab equipments are provided to be displaceable,counter to the direction of production, by which one additional mold segment half at a time can be moved to the downstream end of a molding path, removed from the latter in the direction of production and moved into a parking position.Type: GrantFiled: April 24, 1995Date of Patent: October 1, 1996Assignee: Wilhelm HeglerInventors: Ralph-Peter Hegler, Wilhelm Hegler
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Patent number: 5543204Abstract: A bi-directionally corrugated sandwich construction for use in applications equiring high-strength, light-weight components is disclosed. The sandwich construction comprises first and second face sheets positioned essentially parallel to and spaced apart from each other and having a core therebetween. The core has two sets of corrugated strips which have planar peaks and troughs positioned at regular intervals. The strips of the first set are positioned parallel to and spaced apart from each other with the peaks and the troughs in phase with each other such that parallel rows of troughs are formed perpendicular to the strips. The strips of the second set are positioned parallel to each other with the peaks and troughs in phase with each other, and are positioned perpendicular to the first set of strips in the rows of troughs formed thereby.Type: GrantFiled: January 5, 1995Date of Patent: August 6, 1996Assignee: The United States of America as represented by the Secretary of the NavyInventor: Hemen Ray
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Patent number: 5522718Abstract: An apparatus for the production of corrugated tubing from thermoplastic synthetic resin including a shaping path following an extrusion head of an extruder and composed of a guide which is arranged in a frame and on which mold halves, fitted together in a pair at an inlet to define annular molds in a compact train as a travelling mold moving with the tube are advanced by at least one drive pinion arranged at an initial part of the shaping path, the pinion being in mesh with racks on the fitted together mold halves. At an exit point following the shaping path, the mold halves are separated from one another and are gripped by gripping arms provided with coupling devices and area shunted back to the inlet of the shaping path. The gripping arms are bearinged by drives in a movable fashion on carriages. The carriages are able to be reciprocated by drives on guides on return paths parallel to the shaping path.Type: GrantFiled: June 3, 1994Date of Patent: June 4, 1996Assignee: Drossbach GmbH & Co. KGInventor: Karl Dietrich
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Patent number: 5511964Abstract: An apparatus for the manufacturing of plastic pipes has half shells of which two at a time combine as a pair to form a mold. It is provided with a temperature-regulating bell. Supply lines are formed as flexible supply hoses of temperature-resistant plastic material. A line conduit accommodating them is provided with a protecting tube, which accommodates the supply hoses and which is provided with a heat insulation towards an injection head.Type: GrantFiled: March 6, 1992Date of Patent: April 30, 1996Assignee: Wilhelm HeglerInventors: Ralph-Peter Hegler, Wilhelm Hegler
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Patent number: 5510071Abstract: A method and apparatus for production of smooth or corrugated small and large diameter thermoplastic tubing and composite tubular structures. The apparatus includes a supporting framework, a plurality of mold carriages mounted on said framework for reciprocal linear travel therealong, at least one mold block mounted on each of said mold carriages, each said mold block comprising a pair of opposed semi-cylindrical segments mounted on a carriage for transverse linear reciprocal travel therealong for closing and opening of said mold block, an actuating mechanism for moving said opposed mold segments towards and away from each other, and a single actuating mechanism for selectively moving said carriages.Type: GrantFiled: February 4, 1994Date of Patent: April 23, 1996Assignee: Big "O" Inc.Inventors: Lenard Van Wonderen, Joseph F. Bengough, Carl D. Chapman, Frederick A. Kime
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Patent number: 5508083Abstract: Provided is an improved corrugated containerboard that includes a corrugated medium sandwiched between and secured to a top liner and a bottom liner. The corrugated medium, top liner, and bottom liner each include fibers that are oriented in a machine direction, and the corrugated medium defines a plurality of flutes that are oriented in the machine direction. The improved corrugated containerboard is constructed from conventional paperboard which is drawn through a corrugation system in the machine direction. A first piece of paperboard is drawn between a pair of dies to form the corrugated medium with flutes oriented in the machine direction. A second and third piece of paperboard are glued to either side of the corrugated medium to form the corrugated containerboard. Each die includes an engaging surface with ridges thereon, and the engaging surfaces are opposed and define a forming zone therebetween which the first piece of paperboard is drawn through.Type: GrantFiled: January 25, 1994Date of Patent: April 16, 1996Inventor: Francis L. Chapman, Jr.
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Patent number: 5503547Abstract: An apparatus for continuously manufacturing a corrugated sheet having a varying fold width and also having fold lines extending either straight or in wavy or zig-zag fashion in a direction widthwise thereof. The apparatus includes upper and lower toothed rolls each made up of a group of toothed discs and having a circumferential groove defined between each neighboring toothed discs. At least one of the upper and lower toothed rolls is supported for adjustment in position relative to and in a direction towards and away from the other of the upper and lower toothed rolls. Upper and lower guide bars while extending in a direction parallel to the upper and lower toothed rolls are accommodated within the circumferential grooves for movement in a direction towards and away from each other over a distance corresponding to the height of each tooth of any one of the upper and lower toothed rolls.Type: GrantFiled: April 14, 1995Date of Patent: April 2, 1996Assignees: Nishikawa Rose Co., Ltd., Uenoyama Kikou Co., Ltd., Sunchemical Co., Ltd.Inventors: Toshio Funahashi, Koshirou Kitada, Masayoshi Oguri, Tetsuo Hirota, Yoshio Hori, Toshihiko Matsubara
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Patent number: 5503903Abstract: A self-supporting headliner panel for lining the interior surface of an automotive roof comprises a front sheet, a back sheet and an intermediate corrugated sheet adhered to the front and back sheets. The front sheet and the back sheet each comprise wood fibers and polypropylene. To form the panel, a laminate of the front sheet, the back sheet and the intermediate corrugated sheet is molded in a heated mold which melts polypropylene fibers in the front and back sheet causing the laminate to conform to the shape of the mold and adhering the three sheets together.Type: GrantFiled: September 16, 1993Date of Patent: April 2, 1996Assignee: Indiana Acoustical ComponentsInventors: David W. Bainbridge, Mario P. Tocci, Larry M. Bauman
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Patent number: 5486405Abstract: In the case of a method of producing a corrugated board for protecting electrostatically endangered articles 10 against electrostatic: discharges and electric fields, at least one corrugated layer 1 and at least one flat layer 2, 3 are glued together, a shield means 4, which contains carbon and/or graphite, being applied, prior to the glueing of said layers 2, 3, to the surface 40, 50, 60 of at least one layer which will be located in the interior of the corrugated board structure. This shield means 4 is applied as a layer, which comprises interconnected layer components 80 and intermediate interspaces 90 occupying a certain area, before the layers 1, 2, 3 are glued together in the area of said interspaces 90. The interspaces 90 are either completely free or covered by thinner layer components 90'occupying a certain area and constituting part of the shield means 4.Type: GrantFiled: October 4, 1993Date of Patent: January 23, 1996Assignee: Hans Kolb Wellpappe GmbH & Co.Inventor: Wolf-Henning Laves