By Rotation Of Material Or Material Shaping Member Patents (Class 264/310)
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Publication number: 20090189311Abstract: A lip product remixing kit contains tools that provide for recovering unused cosmetic lip material from applicator containers, and remixing and remolding the materials to form reconstituted cosmetic lip products. Using the kit, one may re-color their lip product by combining two or more lip products so as to customize the overall appearance (color and shape) and consistency of the product as desired by the user. The kit also provides tools needed to recover the unused lipstick material in the base of an applicator tube and to re-mold the material into a new stick that may be inserted into a new or used applicator tube. Other uses for the kit are to repair a broken lipstick and reformulate a lipstick into lip gloss. In a preferred embodiment, the kit includes spatulas, mixing/measuring containers, storage containers, lip product applicator tubes with stickers, instructions, a tube of clear gloss and a mold for forming reconstituted sticks of lipstick.Type: ApplicationFiled: January 23, 2009Publication date: July 30, 2009Inventors: Jill Quillin, Jack S. Peterson
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Publication number: 20090174116Abstract: A flexible grip for an implement handle and method of making same in which the grip is molded with a core or mandrel having a spiral groove which forms a thread like surface on the interior of the grip when molded. Upon removal from the mold, the core may be easily removed by relative rotation of the core and grip one with respect to the other.Type: ApplicationFiled: March 18, 2009Publication date: July 9, 2009Inventors: David Keith Gill, William W. Andersen
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Publication number: 20090140460Abstract: In embodiments of the present invention improved capabilities are described for reproducing the size of a first ceramic ware in the making of a second ceramic ware. In embodiments, the first ceramic ware may be received on a pottery wheel. A hinged pointer may then be presented to a position on the first ceramic ware, where the hinged pointer may include a pointer connected to a supporting structure by way of a hinge. The first ceramic ware may then be removed from the pottery wheel, and material for the making of the second ceramic ware may be placed on the pottery wheel. The process of making the second ceramic ware may then progress, where the making includes sizing the second ceramic ware to the position of the hinged pointer.Type: ApplicationFiled: December 3, 2008Publication date: June 4, 2009Inventor: John L. Fulwood
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Publication number: 20090108498Abstract: An injection molding machine conventionally includes a hydraulic circuit that communicates energy from a first motor. The hydraulic circuit typically includes pumps that regulate, in a conventional fashion, the flow of hydraulic fluid to control molding sub-assembles and functions, such as clamp up, stroke and injection. Additionally and conventionally, a dedicated electric drive is coupled to an extruder to effect rotation and operation thereof. According to the invention, the hydraulic circuit is extended to include a hydraulic motor drive whose operation is to rotate the extruder, thereby permitting the dedicated electric drive and its associated frequency and power control circuitry to be eliminated.Type: ApplicationFiled: October 25, 2007Publication date: April 30, 2009Inventor: Andreas UJMA
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Publication number: 20090085252Abstract: The instant invention pertains to the use of secondary sterically hindered amines as processing additives in rotational molding processes. These additives increase process stability, since they provide a broader temperature range towards higher temperatures during the melt processing step.Type: ApplicationFiled: January 24, 2007Publication date: April 2, 2009Inventors: Ernst Minder, Andreas Thurmer, James Harold Botkin
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Patent number: 7504058Abstract: A low cost oil, grease removal assembly includes a rotomolded plastic container having an inlet and an outlet; a rotomolded plastic basket support located at the inlet inside the container; a rotomolded plastic outlet baffle located in the container at the outlet; a plurality of container cover sections including a first section to cover the basket support, a second container cover section having an oil, grease removal mechanism downstream of the basket support and upstream of the outlet baffle, and a third container cover section to cover the outlet baffle.Type: GrantFiled: February 3, 2005Date of Patent: March 17, 2009Assignee: Thermaco, Inc.Inventors: William C. Batten, Bruce W. Kyles
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Publication number: 20090033000Abstract: A method of making a touch fastener includes continuously introducing molten resin to a pressure zone at a peripheral surface of a rotating mold roll, such that pressure in the pressure zone forces some of the resin into an array of stem cavities defined in the mold roll to form resin stems while a remainder of the resin forms a base at the roll surface, interconnecting the stems. The method includes forming engageable heads on the stems to form fastener elements and introducing a quantity of discrete, loose particles to the resin at an entrance to the pressure zone, such that the particles become part of the base.Type: ApplicationFiled: August 1, 2007Publication date: February 5, 2009Applicant: VELCRO INDUSTRIES B.V.Inventor: Wallace L. Kurtz, JR.
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Publication number: 20090001249Abstract: A product and method where a multi-colored product is rotationally molded with no or essentially no blending of the colors. A separation sheet is positioned in the mold to separate relatively adjacent portions of the mold cavity that contain differently colored resins. The separation sheet acts as a barrier to prevent the differently colored resins from blending during the molding process. During the molding process, the molten resins may fuse to opposite sides of the separation sheet, or the separation sheet may melt and disperse, all or in part, within the mold while maintaining a distinct color difference between the differently colored portions of the molded product.Type: ApplicationFiled: June 29, 2007Publication date: January 1, 2009Inventors: Mark Bachner, Paul Bachman, Mike McMinn, Gary Bartlett, Eric Selner, Kevin Sandieson
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Publication number: 20090004417Abstract: A polymer composition suitable for rotomoulding comprising I) An ethylene homopolymer or copolymer with at least one other C3-10 a olefin, having a melt flow rate of 0.5 to 30, a molecular weight distribution (Mw/Mn) of less than 4, an Mw of 50,000 to 110,000, a density of 0.940 g/cm3 to 0.970 g/cm3 and a melting point of 100 to 145° C.; or I) a propylene homopolymer or copolymer with at least one other C2-10 ? olefin, having a melt flow rate of 0.5 to 30, a molecular weight distribution (Mw/Mn) of less than 4, an Mw of 150,000 to 300,000, and a melting point of 100 to 170° C.; and II) an ethylene homo or copolymer with at least one other C3-10 ?-olefin, having a melt flow rate of within 40% of the melt flow rate of component (I), a molecular weight distribution of (Mw/Mn) of less than 4, an Mw of within 30% of the Mw of component (I), a density of 0.880 g/cm3 to 0.940 g/cm3 said density being at least 0.010 g/cm3 less than the density of component (I) and a melting point of at least 5+ C.Type: ApplicationFiled: December 20, 2007Publication date: January 1, 2009Applicant: Borealis Technology OyInventors: Arild Follestad, Espen Ommundsen, Knut Fosse
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Patent number: 7462313Abstract: A method of forming snap closures includes molding a series of discrete male and female snaps extending integrally from a base.Type: GrantFiled: October 12, 2005Date of Patent: December 9, 2008Assignee: Velcro Industries B.V.Inventor: Christopher M. Gallant
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Publication number: 20080280118Abstract: The present invention provides a polyester foamed sheet composed of a resin composition comprising 50 to 100 weight % of a polyalkylene terephthalate, wherein the resin composition has an isothermal crystallization peak time of 5 to 60 seconds at any temperature of 100 to 150° C., and wherein the sheet has (A) an apparent density of 0.05 to 1.25 g/cm3 and (B) a temperature at which an exothermic peak derived from crystallization is observed of 0 to 150° C. when thermal analysis is performed using an input compensation type differential scanning calorimeter.Type: ApplicationFiled: March 29, 2006Publication date: November 13, 2008Inventor: Katsuhiro Fujimoto
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Publication number: 20080230953Abstract: A modeling compound stamping tool is disclosed including a stamping element having multiple images, and a gear assembly with a handle mechanically coupled for selection of an image of the stamping element to assist in the creation of art forms, artistic designs or impressions. The described methods of stamping the modeling compounds in a toy provide the stamping element with the multiple images, and selecting an image for applying to a quantity of modeling compound. A dial or a handle is disclosed for rotating between images of the stamping element to position various different images in downwardly facing positions for pressing the stamping element against the quantity of modeling compound to produce the desired image.Type: ApplicationFiled: March 23, 2007Publication date: September 25, 2008Inventors: Thomas P. Hamilton, Thomas Mangiaratti, Grady Feren Hayes
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Patent number: 7396881Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength. Articles produced from the compositions may also exhibit improved impact resistance properties, enhanced ductile break properties, and improved deflection resistance, which represents a combination of creep and fatigue resistance.Type: GrantFiled: July 21, 2005Date of Patent: July 8, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Arnold Lustiger, David John Lohse, Blair A. Graham, Ronald Cooke
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Publication number: 20080150193Abstract: An improved method of molding an extended product having a longitudinal hollow through the center, wherein the use of numerous lateral chaplets to stabilize the product core during the molding process is significantly reduced or eliminated. Tangential structures positioned on a core suspended throughout the length of the cavity will eliminate or minimize the need for chaplets or other core stabilizing means. The core is placed in the open cavity of a mold used to manufacture rubber products and is suspended throughout the length of the cavity. The tangential structures on the core will maintain the suspended position of the core as rubber flows around it filling the cavity. After the cavity is filled and vulcanization of the rubber is complete, the mold is opened and the core is removed from the cavity with the molded product intact. Upon removal from the mold, the core is extracted from the product.Type: ApplicationFiled: December 13, 2007Publication date: June 26, 2008Inventors: Van T. Walworth, Joseph C. Bacarella, David B. Hook, William McGinn
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Publication number: 20080106001Abstract: Systems, methods, and apparatus are disclosed for making patterning tools from one or more discrete elements. Such tools can have one or more “seams” or joints where the individual elements abut which can limit the tools' performance and utility in roll-to-roll manufacturing. Methods are described herein for producing “near-seamless” tools, that is, tools having seams that exhibit minimum disruption of the tool pattern and thus improved material produced by such tools. The patterning tools can be cylindrical and/or closed in shape.Type: ApplicationFiled: February 27, 2007Publication date: May 8, 2008Inventor: W. Dennis Slafer
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Patent number: 7364679Abstract: A method of venting a rotational mold at a predetermined condition by actuating an actuating venting assembly pierces the shell of the molded article and introduces a passageway to relieve pressure during the molding cycle. The actuating venting assembly enables a tactical methodology for venting such molds.Type: GrantFiled: April 18, 2006Date of Patent: April 29, 2008Assignee: David Wolfe Design IncInventors: David Kenneth Wolfe, Douglas Edward Pryor
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Publication number: 20080088051Abstract: A method for producing a paint-ready polyurethane molded article is disclosed. The article is produced by rotationally molding a reactive polyurethane in a mold to which has been applied a mold release composition which comprises a volatile siloxane solvent; a combination of a polysilsesquioxane polymer or copolymer and a functionally-terminated polydimethylsiloxane; and optionally a catalyst, a co-solvent, or both. There is further provided a process to produce a painted polyurethane molded article wherein the molded article is free of mold release composition without cleaning.Type: ApplicationFiled: October 16, 2007Publication date: April 17, 2008Inventor: Robert Harvey Moffett
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Patent number: 7343718Abstract: This invention relates to pole structures used for supporting transmission and distribution lines, lighting and communications systems, highway signs, traffic signals, and the like. More specifically, this invention relates to a new and useful design of a multi-sectioned pole, with at least one telescoping upper section made of metal or another similar lightweight material and a base section composed of concrete or similar material that can be directly embedded into the ground without the need for baseplate-type foundations, or other preparatory work.Type: GrantFiled: January 30, 2004Date of Patent: March 18, 2008Assignee: Newmark International, Inc.Inventors: Earl R. Foust, Wesley J. Oliphant, Fouad H. Fouad, Kenneth L. Sharpless
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Publication number: 20080063843Abstract: This invention comprises a self-supporting, temperature-stable, indicia-bearing laminate of at least one layer of a non-oriented polyolefin film having an indicia array and a layer of a non-oriented polyolefin support film. The indicia layer laminate is formed by printing a carrier sheet with at least one layer of a printing ink comprising a mixture of particulate polyolefin, indicia material and a polyolefin-compatible resin. The polyolefin support film is printed as a layer over the indicia layer with a mixture of a polyolefin and a polyolefin-compatible resin. The printed layers are cured into non-oriented films, forming an indicia transfer. The transfer is used by removing the indicia-bearing laminate from the carrier sheet and applying the laminate to the inside surface of a rotational mold where it melts and fuses into the outer wall of a polyolefin product during the formation of the product in the rotational molding cycle.Type: ApplicationFiled: September 13, 2006Publication date: March 13, 2008Inventors: Michael J. Stevenson, Robert A. Reeves
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Publication number: 20080038533Abstract: Provided are blends of linear low density polyethylene copolymers with very low density, low density, medium density, high density, and differentiated polyethylenes and other polymers. The invention also includes articles produced from the linear low density polyethylene and polyethylene blends described herein.Type: ApplicationFiled: April 24, 2007Publication date: February 14, 2008Inventors: Steven A. Best, Bernard L. Bossaert, Ronald N. Cooke, Paul M. German, Blair A. Graham, Carlos A. Mota, Calvin K. Schram, Barry C. Trudell
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Patent number: 7326380Abstract: Polymeric microstructures and nanostructures can be prepared with use of a tip to pattern a surface. A tip can be used to pattern a structure which can initiate polymerization. The structure can be then exposed to monomer to induce polymerization at the structure. Alternatively, a tip can be used to pattern a surface with a monomer in which the surface is treated with polymerization catalyst so that polymerization occurs at the patterning site. Ring-opening metathesis polymerization can be carried out with use of the tip to control the polymerization. The tip can be a sharp tip as used in for example an atomic force microscope tip. Norbornene types of monomers can be used. Biological macromolecules can be also prepared.Type: GrantFiled: July 19, 2004Date of Patent: February 5, 2008Assignee: Northwestern UniversityInventors: Chad A. Mirkin, Xiaogang Liu, Shouwu Guo
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Publication number: 20080012177Abstract: A mold unit for molding a centrifugal fan that has blades arranged in a circumferential direction, each blade extending in a direction that is inclined in a circumferential direction at a predetermined angle relative to a direction parallel to a rotation axis, has a fixed mold and a movable mold. The fixed mold and the movable mold provides a cavity for molding the fan therebetween. At least one of the fixed mold and the movable mold has a blade-molding core member for molding the blades. When separating the blade-molding core member from the blades, the blade-molding core member is moved in a spiral manner along inclination of the blades and about the rotation axis.Type: ApplicationFiled: July 11, 2007Publication date: January 17, 2008Applicant: DENSO CorporationInventors: Shuichi Tamaki, Hisashi Sawada
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Publication number: 20080006967Abstract: A method of fabricating a polymer material endoprosthesis by molding, said method comprising: molding the endoprosthesis on a matrix roller having an outer surface that includes a recess in the form of the prosthesis, the matrix roller being rotated about its axis; removing excess polymer material by scraping the surface of the matrix roller; allowing the endoprosthesis to solidify; and withdrawing the endoprosthesis from the matrix roller.Type: ApplicationFiled: July 2, 2007Publication date: January 10, 2008Applicant: MS TECHNIQUES, a French CorporationInventors: ETIENNE MALHER, Sylvain Siegel
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Patent number: 7309460Abstract: A container suitable for storing and transporting photomasks and including a container body, a cover, first and second cushions and left and right channels disposed in slots formed in the container body. In one embodiment, the container of this invention is formed in a one-piece design by rotomolding. The cover is subsequently separated from the body and machined so as to provide a slidingly sufficient seal and disposed therein.Type: GrantFiled: November 23, 2005Date of Patent: December 18, 2007Assignee: Entegris, Inc.Inventors: Michael L. Johnson, Barry L. Rauworth
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Publication number: 20070231518Abstract: A method is provided for producing a hollow body by rotational moulding, followed by filling the hollow body with expanded polyurethane.Type: ApplicationFiled: March 30, 2007Publication date: October 4, 2007Applicant: ACERBIS ITALIA S. P. A.Inventor: Walter Signori
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Publication number: 20070200278Abstract: A porous bat may be used on a pottery wheel including a locating pin at a nominal location. The porous bat includes an elongated hole at a location corresponding to the nominal location. The elongated hole is adapted to slidably fit over the locating pin. The hole has a first axis with a dimension sized to fit over the locating pin and a second axis with a dimension larger than the first dimension to compensate for variations in the location of the locating pin on the pottery wheel.Type: ApplicationFiled: February 28, 2006Publication date: August 30, 2007Inventor: Sam Lester
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Patent number: 7250128Abstract: A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.Type: GrantFiled: April 20, 2005Date of Patent: July 31, 2007Assignee: California Institute of TechnologyInventors: Marc A. Unger, Hou-Pu Chou, Todd A. Thorsen, Axel Scherer, Stephen R. Quake, Jian Liu, Mark L. Adams, Carl L. Hansen
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Patent number: 7247268Abstract: A cylindrical element is manufactured by a process which includes depositing successive layers of thermoplastic materials in a cycle by rotation moulding, or by a technique enabling a deposit of successive layers, the cycle including at least one deposit by rotation moulding or by a technique enabling deposit of successive layers at a temperature from 170 to 240° C. The cylindrical element contains at least one layer containing an ethylene-vinyl alcohol copolymer with a density at the above temperature of between 0.94 and 1.4, and a melt flow index of between 1.3 and 4.2 g/10 minutes.Type: GrantFiled: August 27, 2001Date of Patent: July 24, 2007Assignee: Commissariat a l'Energie AtomiqueInventors: Franck Jousse, Philippe Mazabraud, Abbas Tcharkhtchi, Mark Kearns
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Patent number: 7223314Abstract: Stretchable fastener products are formed by providing a sheet-form fastener tape, slitting the fastener tape to form longitudinally extending bands of fastener tape and separating the longitudinally extending bands to space the fastener tape bands transversely apart. The spaced bands are attached to a sheet form elastic web to form a stretchable fastener product. In some examples, the stretchable fastener product is formed continuously in conjunction with manufacture of the sheet-form fastener tape.Type: GrantFiled: September 13, 2002Date of Patent: May 29, 2007Assignee: Velero Industries B.V.Inventor: George A. Provost
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Patent number: 7201864Abstract: The cycle time for a rotomolding process is improved through the use of a molding material comprising a blend of at least two polyethylenes having narrow molecular weight distributions and homogeneous comonomer distributions. Alternatively, the molding temperature may be reduced to conserve energy and reduce energy costs. The polyethylene blend also has a narrow molecular weight distribution of less than 3 and a density of from 0.930 to 0.950 g/cc. Rotomolded parts prepared from the blend composition have excellent impact resistance and are also resistant to warpage. A preferred process employs a blend composition which contains a blend component having a higher molecular weight and a lower density than another blend component—this blend may be used to prepare rotomolded parts with warpage resistance and improved environmental stress crack resistance (ESCR). A highly preferred process uses a blend composition which further contains a minor amount (from 0.Type: GrantFiled: July 8, 2004Date of Patent: April 10, 2007Assignee: Nova Chemicals (International) S.AInventors: Mark Weber, Philippa Hocking, Stephen John Brown, Christopher John Brooke Dobbin
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Patent number: 7198478Abstract: A method of treating a disc plate. has the following operations of: molding a mold disc plate through an injection molding; and spinning the mold disc plate at a high spin speed. The spinning operation has at least one of the following two sub-operations of: reducing a warp of the mold disc plate with a centrifugal force caused during the spinning operation, and reducing a temperature of the mold disc plate during the spinning operation. Moreover, an apparatus of treating a disc plate has: a conveyer for conveying a mold disc plate obtained through an injection molding; a disc bench for receiving the mold disc plate conveyed with the conveyer; and a spin driver for spinning the disc bench when a temperature of the mold disc plate is higher than 90° C., to thereby spin the mold disc plate.Type: GrantFiled: May 17, 2004Date of Patent: April 3, 2007Assignee: Origin Electric Company, LimitedInventors: Takayuki Suzuki, Masahiro Nakamura, Hideo Kobayashi, Shinichi Shinohara
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Patent number: 7191508Abstract: A method for manufacturing thin-film magnetic head sliders is disclosed. Initially, an elastic layer, which may be made of poly-dimethyl siloxane (PDMS), is spun on a wafer and is thermally cured. Then, a resist layer is spun on the elastic layer. Both the resist layer and the elastic layer are subsequently peeled off together from the wafer. Next, the peeled resist layer/elastic layer is applied onto a group of magnetic heads with the resist layer in direct contact with the magnetic heads. Finally, the elastic layer is peeled off from the resist layer such that the resist layer remains attaching to the magnetic heads.Type: GrantFiled: August 13, 2004Date of Patent: March 20, 2007Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Cherngye Hwang, Kim Y. Lee, Gary McClelland, Dennis Richard McKean, Timothy Clark Reiley
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Patent number: 7160496Abstract: Thermoplastic compositions containing metal materials and a method for preparing the same. The compositions are formed into particles having diameters suitable for a rotational thermoforming processing. The compositions are particularly applicable for use in slush molding processes where efficient heat transfer to the material is desired to form improved surface quality thermoplastic skin. A preferred method for preparing thermoplastic compositions containing metal material into a slush moldable powder comprises melt compounding the composition to form pellets, and further processing the pellets by cryogenic pulverization. A preferred method for forming micropellets uses an extruder having a gear pump to increase the melt pressure.Type: GrantFiled: November 1, 2002Date of Patent: January 9, 2007Assignee: Delphi Technologies, Inc.Inventors: Sandip R. Patel, Kenneth Alan Gassman
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Patent number: 7156940Abstract: This invention is a method for the precise placement of indicia with high resolution into the wall of a hollow-form, molded plastisol part. The method includes the steps of preparing a plastisol graphic transfer by casting a base layer of plastisol onto a carrier sheet, printing indicia with pigmented plastisols onto the base layer of plastisol to form a graphic transfer, and over printing the graphic transfer with a body layer of plastisol. After each layer of plastisol is deposit, the layer cured by heating before depositing the next layer and the transfer is heated to cure the final, body layer.Type: GrantFiled: April 14, 2006Date of Patent: January 2, 2007Inventors: Michael J. Stevenson, Robert A. Reeves
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Patent number: 7144541Abstract: A method for fabricating a molded resinous part with a metal distributed in a surface thereof comprising: kneading a low-melting metal and a resin having a curing temperature lower than a solidification point of the low-melting metal in a molten state; and injection-molding the resulting kneaded mixture into a mold whose temperature is set to a temperature equal to or lower than the solidification point of the low-melting metal and higher than the curing temperature of the resin, thereby obtaining a molded resinous part comprising the resin as a core and the low-melting metal in a surface thereof.Type: GrantFiled: January 3, 2003Date of Patent: December 5, 2006Assignee: Sharp Kabushiki KaishaInventors: Toshiaki Oku, Hiroyuki Suga
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Patent number: 7118700Abstract: A method of inhibiting the growth of algae and like organisms in plastic water tanks exposed to sunlight comprises providing an outer tank surface operative to reflect off a substantial portion of sunlight that hits the tank off the outer tank surface; and providing an opaque inner tank layer operative to substantially prevent sunlight passing through the outer tank surface from entering an interior of the tank. A two layer tank is provided comprising a light colored outer layer and a dark sun-blocking inner layer, and is conveniently made by a rotational molding process.Type: GrantFiled: June 6, 2003Date of Patent: October 10, 2006Assignee: Bourgault Industries Ltd.Inventor: Neil Eisner
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Patent number: 7108821Abstract: A method of fabricating a double-walled shell of fiber reinforced plastic material is by centrifuging. The outer wall of the shell is made by projecting glass fibers and resin in a liquid phase against an inside face of a cylindrical mold rotating about its horizontal axis. A section member is then applied against the inside face of the outer wall by a plurality of turns having a diameter substantially equal to the inside diameter of the outer wall and separated from one another by a distance substantially equal to the thickness of the outer wall. The section member has a channel section with a web and two flanges extending radially outward, defining a sealed helical duct. The space between the turns is filled with resin by centrifuging, forming a helical spacer, and the inner wall is formed by centrifuging.Type: GrantFiled: December 10, 2002Date of Patent: September 19, 2006Inventor: Adolphe Tartar
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Patent number: 7097802Abstract: The disclosed method for fabricating low cost laryngeal mask devices includes providing a mold, the mold including interior walls that define a hollow interior volume. The interior volume includes a first portion and a second portion. A liquid plastic material is introduced into the mold, and then the mold is moved so as to coat the mold's interior walls. The liquid plastic material and then allowed to cure. The cured plastic material is then removed from the mold and the cured plastic material includes a generally elliptically shaped plate and a cuff. The cuff is formed from plastic material that coated the portion of the interior walls that defined the first portion. The plate defines a laryngeal side, a pharyngeal side, and a central aperture. An interior perimeter of the cuff is attached to the laryngeal side of the plate proximal to a perimeter of the central aperture. An outer perimeter of the cuff is attached to the laryngeal side of the plate proximal to an outer perimeter of the plate.Type: GrantFiled: February 14, 2004Date of Patent: August 29, 2006Assignee: Indian Ocean Medical Inc.Inventor: Archibald I. J. Brain
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Patent number: 7048886Abstract: Molding techniques and apparatus wherein at least one adjustable edge component can be used to alter the dimensions of the mold cavity between molding operations. Also disclosed are techniques for incorporating reinforcing composite elements into molded plastic parts. Most preferably, a rotomolding technique is used to fabricate a substantially homogenous composite panel for use as a partition or bulkhead.Type: GrantFiled: October 19, 2001Date of Patent: May 23, 2006Assignee: FG Products, Inc.Inventors: Chad Nelson, Roger Nelson, Matt Nelson
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Patent number: 7037455Abstract: A method of insert molding a preformed item into a molded product, the molded product being formed by injecting a moldable material into a mold, is disclosed. The method includes adhering the preformed item to a surface of the mold with an adhesive, wherein the surface to which the preformed item is adhered is free of any features provided for holding the preformed item in place on the mold surface. The method next includes injecting the moldable material into the mold such that the moldable material at least partially surrounds the preformed item, and curing the moldable material. Articles molded via the disclosed method are also described.Type: GrantFiled: December 20, 2002Date of Patent: May 2, 2006Assignee: Mattel, Inc.Inventor: Jon C. Marine
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Patent number: 7011779Abstract: An improved double wall tank has two or more threaded fittings, with a steel outer tank and a thermoplastic inner tank. The inner tank is formed within the outer tank by rotational molding. The inner tank is bonded to the outer tank in an area of the fittings, but is otherwise separate and apart from the outer tank. Before carrying out the rotational molding process, bonding material is applied to the outer tank in the area of the fittings. The thermoplastic material is in powder form and includes mold release material. The thermoplastic material is inserted into the outer tank before rotational molding. The degree of shrinkage of the inner tank can be controlled by air pressure including an area between the fittings.Type: GrantFiled: February 28, 2002Date of Patent: March 14, 2006Assignee: Clemmer Technologies Inc.Inventor: Elson G. Fernandes
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Patent number: 6982057Abstract: A multi-layer rotational-molded plastic article has an area, such as a sight line for viewing content levels, where an inside layer protrudes through the outside layer and may be bonded to it. A first flowable material such as plastic resin is introduced into a mold having an insulating member extending through an aperture or slot into the mold. The mold is rotated and heated to less than full cure. The insulating member is removed, a second, transparent flowable material is introduced into the mold, and a cover member replaces the insulating member. The mold is rotated and heated to cure both resins, and only then cooled and opened.Type: GrantFiled: November 15, 2002Date of Patent: January 3, 2006Assignee: Solar Plastics, Inc.Inventors: Nathan King, Jennifer Schwiebert, John Morgan, Gary Engen
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Patent number: 6969480Abstract: A variety of hollow structures with unique morphologies were manufactured with a rotational spinning technique. Phase separation of soluble solutions or emulsions was induced within a filled mold as it was being rotated about one of its axis. The density difference between phases results in sediment at the inner lumen of the mold under centrifugal forces. After or during sedimentation, gelation of the phase-separated particles fixes the hollow structure morphology and the solvent remains in the center of the mold. The solvent is removed from the mold resulting in a coating or tube. By controlling the rotational speed and the formulation chemistry, the tube dimensions and wall morphology can be manipulated. This technique offers a new approach to the manufacture of polymeric tubes. It requires small quantities of starting material, permits multi-layering of tubes, is applicable to diverse polymers and can result in highly diffusive hollow structures while maintaining good mechanical strength.Type: GrantFiled: February 13, 2003Date of Patent: November 29, 2005Assignee: matRegen Corp.Inventors: Paul D. Dalton, Molly S. Shoichet, Stephane G. Levesque
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Patent number: 6969482Abstract: A method for polychrome plastic material injection molding in accordance with the present invention, in which, a molding board is provided with a plurality of cores, and the cores are each provided with a plurality of cavities. The cores rotated for exchanging the positions of the cavities and together with the rotation of the molding board, whereby permitting the injection of three different colored plastic materials into the cores respectively in turn, and then forming a triple colored plastic object.Type: GrantFiled: April 7, 2003Date of Patent: November 29, 2005Inventor: Teng-Jen Yang
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Patent number: 6969741Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.Type: GrantFiled: September 18, 2003Date of Patent: November 29, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
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Patent number: 6936210Abstract: A method of making a cannula includes providing a plurality of polymer reservoirs with each reservoir containing a polymer material and providing a nozzle mounted within each reservoir of the plurality of reservoirs. The method further includes one or more of preheating the mandrel, generating a polymer material wave from each nozzle, rotating the mandrel over the nozzles to form an initial coat on the mandrel, curing the initial coat, depositing a reinforcing material around a selected section of the mandrel and ensuring that the reinforcing material is held in place at the selected section of the mandrel. The method further includes rotating each section of the mandrel over a selected nozzle to form an additional coat, curing the additional coat, and removing the tubular structure from the mandrel.Type: GrantFiled: June 14, 2002Date of Patent: August 30, 2005Assignee: Edwards Lifesciences CorporationInventor: Ross Bartholomew
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Patent number: 6929766Abstract: A method of making a cannula utilizing dispense molding includes providing at least one dispense nozzle that dispenses a polymer material, providing a mandrel, moving at least one of the mandrel and at least one dispense nozzle relative to one another to produce an alternating pattern of polymer material along a longitudinal axis of the mandrel to form a tubular structure, and removing the tubular structure from the mandrel.Type: GrantFiled: August 2, 2002Date of Patent: August 16, 2005Assignee: Edwards Lifesciences CorporationInventor: Ross Bartholomew
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Patent number: 6926656Abstract: An apparatus and method for fabricating corrugated composite stiffeners provides a base tool having grooves formed in an outer surface and a roller having a rotating shaft and a removable, lobed, elastomeric member surrounding the shaft. The lobes of the elastomeric member form a radial array around the shaft and match the contours of the grooves in the base tool. A section of prepreg fabric is placed between the roller and the base tool, and the roller is rotated to sequentially engage the lobes with the grooves, the lobes pressing the fabric into the grooves, the fabric conforming to the contours of the grooves. Several layers of fabric are applied, then the elastomeric member is released from the shaft, laid out flat, and placed on the fabric on the base tool, the lobes locating in the grooves. The base tool, fabric, and elastomeric member are enclosed in a vacuum bag and heated to cure the fabric.Type: GrantFiled: August 25, 2004Date of Patent: August 9, 2005Assignee: Lockheed Martin CorporationInventors: Slade H. Gardner, Ronald L. Price
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Patent number: 6902695Abstract: A process for the production of polyolefin hollow articles comprises charging the polyolefin with a stabilizer combination comprising (a) at least one compound from the group of the organic phosphites or phosphonites, (b) one or more compounds selected from the group consisting of i.) hydroxylamine derivatives and ii.) amine oxide derivatives and (c) at least one compound from the group of the hindered amine stabilizers, filling this mixture into a mold, heating this mold in an oven to above 280° C., such that the stabilized polyolefin fuses, rotating the mold around at least 2 axes, the plastic spreading to the walls, and cooling the mold while still rotating, opening it and taking the resultant hollow article out.Type: GrantFiled: January 22, 2004Date of Patent: June 7, 2005Assignee: Ciba Specialty Chemicals CorporationInventor: Urs Leo Stadler
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Patent number: 6899833Abstract: A method of manufacturing a molded article from a settable mixture includes the steps of in-taking a plurality of components into a plurality of separate material discharge containers sized relative to each other to provide the required mix ratio of the settable mixture. The components contained in the material discharge containers are discharged to a mold tool through a mixing head that receives each of the components separately and thoroughly mixes them into the settable mixture. The settable mixture flows from the mixing head to fill the mold tool. The mold tool rotates about an axis during the filling step to evacuate air from the mold tool. Pressure of the settable mixture is monitored during the filling step and rate of discharge of the settable component is varied in response to changes in pressure of the settable mixture.Type: GrantFiled: April 29, 2002Date of Patent: May 31, 2005Assignee: Masco CorporationInventor: Gerard Jay Bellasalma