Vacuum Means Patents (Class 425/85)
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Patent number: 11660778Abstract: A moulded part (1) for a mould (100). The moulded part (1) comprises at least one shell (11) for casting a product. A flange (12) is arranged on a frame of the moulded part (1) for sealing against abutment a sealing surface (13). The shell (11) has a first permeability for a fluid and the flange (12) has a second permeability for the fluid. The second permeability is less than the first permeability.Type: GrantFiled: November 7, 2018Date of Patent: May 30, 2023Assignee: Dorst Technologies GmbH & Co. KGInventors: Roland Menzel, Sebastian Leonhard Bauer, Benedikt Schöffmann
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Patent number: 11285638Abstract: A method of fabricating a composite material part includes placing a fiber texture in a mold including in its bottom portion a porous material part on which a first face of the texture rests, injecting a liquid under pressure into the fiber texture, the liquid containing a powder of refractory ceramic particles, and draining through the porous material part the liquid that has passed through the fiber texture, while retaining the powder of refractory ceramic particles inside said texture by the porous material part. A perforated rigid element is interposed between the bottom of the mold and the porous material part.Type: GrantFiled: April 19, 2017Date of Patent: March 29, 2022Assignee: SAFRANInventors: Michael Podgorski, Bruno Dambrine, Edu Ruiz
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Patent number: 8936456Abstract: The invention provides a method for forming a fibrous layer within a tubular support, which comprises the steps of: (a) providing the tubular support; (b) providing forming mesh over the curved surface of the support and closing its ends against escape of fluid; and (c) introducing fibrous slurry (e.g. an aqueous slurry of borosilicate glass microfibers and water dispersible heat curable acrylic resin at a pH of about 3) from a pressurized source into an annular molding space between a rotary molding torpedo and an inner surface of the support, the torpedo having at least one channel for slurry opening along a curved surface thereof, fibers in the slurry collecting within the forming mesh to form the layer.Type: GrantFiled: July 23, 2010Date of Patent: January 20, 2015Assignee: PSI Global Ltd.Inventor: David Matthew Hunter
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Patent number: 8828286Abstract: Provided is a dental restoration conditioning apparatus including a housing formed with a liquid-tight dental restoration treating space including a liquid drain. The housing is configured with a disposable dental restoration grip including at least one resilient vacuum cup, each of the at least one vacuum cup being in fluid communication with at least one vacuum source.Type: GrantFiled: February 7, 2011Date of Patent: September 9, 2014Assignee: Naym 55 Dental Technologies Ltd.Inventors: Adi Alphandary, Moises Fleitman, Nitzan Bichacho, Yuval Jacobi
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Patent number: 8647093Abstract: A device for manufacturing a tray of cellulose material, includes: a compression mold including an essentially flat bottom end and surrounding sides for compression molding and drying of cellulose pulp to a finished tray; a male mold arranged to fit into the compression mold and that includes a bottom space and lateral surfaces corresponding to the compression mold, wherein the compression mold and the male mold between themselves delimit a mold space including a base section and a side section for compression molding of the cellulose pulp. Both the compression mold and the male mold are provided with blow and suction devices for blowing in and suction of fluid in and out of the mold space. The blow and suction devices include an inlet pipe having an inlet valve, coupled to an inlet chamber in connection with the mold space, and an outlet pipe having an outlet valve separated from the inlet pipe and coupled to an outlet chamber in connection with the mold space.Type: GrantFiled: February 20, 2009Date of Patent: February 11, 2014Assignee: SIG Technology AGInventor: Joakim Stockhaus
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Patent number: 8556618Abstract: A material forming apparatus and method for shaping a material to a forming tool having complex contours. The material forming apparatus may comprise a bladder sealed to a support structure, cooperatively forming a hollow space therebetween into which air or another gas may be pumped to inflate the bladder. The forming tool may comprise a protrusion of any shape to which the material may conform. The material may be placed between the bladder and the protrusion and the support structure may be actuated toward the forming tool. As the support structure progresses toward the forming tool, an area of material pressed against the protrusion by the bladder increases in an outward direction. A pressure regulator may regulate an amount of pressure applied to the material by the bladder as the bladder presses the material against the forming tool.Type: GrantFiled: April 7, 2011Date of Patent: October 15, 2013Assignee: Spirit AeroSystems, Inc.Inventor: Blaise F. Bergmann
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Patent number: 8512792Abstract: A method for producing blocks of cheese from curd, wherein a curd mass is deposited in at least one cheese mold provided with a follower and in the at least one cheese mold is subjected to a vacuum treatment and pressing treatment, which pressing treatment is carried out while the at least one cheese mold is situated in a holder in which a vacuum prevails, wherein the vacuum treatment comprises at least a first and a second step, wherein in the first step in the holder with the aid of vacuum pump means a vacuum with a first vacuum pressure is created to draw air and whey entrained with the air from the curd mass, and in the second step the vacuum pressure in the holder is reduced further to a second vacuum pressure, which has a value at which the whey present in the curd mass starts to boil and residual air and free whey are pushed from the curd mass.Type: GrantFiled: October 30, 2009Date of Patent: August 20, 2013Assignee: Tetra Laval Holdings & Finance S.A.Inventor: Harrie Spijkerman
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Publication number: 20120312492Abstract: The application discloses a base plate comprising a rigid body portion (50), means (51, 52?, 52?) arranged within the rigid body portion (50) to enable vacuum to be applied. The vacuum means comprise an open space (51) in the form of a centrally positioned recess forming a vacuum chamber (51) within the rigid body portion (50) and at least one connecting channel portion (52?, 52?) that extends in the main plane of the rigid body portion (50) arranged to connect the vacuum chamber (51) with a vacuum source (52). An assembly comprising the base plate and a pulp mould, as well as methods for producing the base plate and the assembly, are also disclosed.Type: ApplicationFiled: November 12, 2010Publication date: December 13, 2012Inventors: Björn Nilsson, Leif Båskman, John Shand
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Publication number: 20120267816Abstract: The invention provides a method for forming a fibrous layer within a tubular support, which comprises the steps of: (a) providing the tubular support; (b) providing forming mesh over the curved surface of the support and closing its ends against escape of fluid; and (c) introducing fibrous slurry (e.g. an aqueous slurry of borosilicate glass microfibers and water dispersible heat curable acrylic resin at a pH of about 3) from a pressurized source into an annular molding space between a rotary molding torpedo and an inner surface of the support, the torpedo having at least one channel for slurry opening along a curved surface thereof, fibers in the slurry collecting within the forming mesh to form the layer.Type: ApplicationFiled: July 23, 2010Publication date: October 25, 2012Applicant: PSI Global Ltd.Inventor: David Matthew Hunter
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Patent number: 8216506Abstract: One embodiment of the present invention includes: a step of setting a piece of a plant containing moisture inside a pressurizing apparatus and hermetically closing the internal space of the pressurizing apparatus; a step of applying a heat and a pressure to the piece of the plant; and a step of (i) enabling ventilation between the inside of the pressurizing apparatus and outside thereof after the piece of the plant reaches a predetermined molding temperature, (ii) retaining the pressure and the temperature for a predetermined period, (iii) cooling a molded article, and (iv) taking out the molded article from the pressurizing apparatus. This realizes a method for processing a plant which method makes it possible to mold a piece of a plant into a desired shape without reducing the piece of the plant into powder and without using an adhesive.Type: GrantFiled: June 4, 2008Date of Patent: July 10, 2012Assignee: National University Corporation Kyoto Institute of TechnologyInventors: Norio Takakura, Takashi Iizuka, Ryohei Kuramatsu
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Patent number: 8211263Abstract: A method for fabricating an air-filled cellular structure for use as a resilient cushion. The method includes providing a molding structure including a shelf substantially surrounding a depression, and a platform that fits within the depression and is selectively movable between a plurality of positions relative to the shelf, moving the platform to a preselected position relative to the shelf, wherein the preselected position corresponds to a substantially predetermined amount of air to be contained by the air-filled cellular structure, and using a vacuum device to draw air from within the depression.Type: GrantFiled: September 3, 2009Date of Patent: July 3, 2012Assignee: Applied FT Composite Solutions Inc.Inventor: Daniel Kim
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Patent number: 8202454Abstract: A mold and method for vacuum assisted resin transfer molding of a fiber reinforced laminated structure are provided. The mold includes a first mold part and a second mold part. The first mold part defines a negative impression of the laminated structure, being structurally stable and forming a support for fiber reinforcement layers of the laminated structure. The second mold part connectable to the first mold part for closing the mold and defines together with the first mold part an enclosed space which can be evacuated. The mold further includes a flow duct for guiding a liquid polymer which is formed as a recess in the first mold part and/or a recess in the second mold part that is open towards the enclosed space and extends along a section of the periphery of the first mold part and/or the second mold part.Type: GrantFiled: May 13, 2011Date of Patent: June 19, 2012Assignee: Siemens AktiengesellschaftInventors: Claus Burchardt, Allan Hurup, Michael Nørlem, Bendt Olesen, Henrik Stiesdal
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Patent number: 8137499Abstract: In a method for reinforcing a fiber composite component for aviation and space flight, a vacuum mat is configured with at least one receiving portion for reproducibly receiving at least one reinforcing element. The at least one reinforcing element is introduced into the at least one receiving portion of the vacuum mat. The vacuum mat with at least one introduced reinforcing element is applied reproducibly in a sealed manner to the fiber composite component to be reinforced to form a mold portion and at least the formed mold portion is cured to connect the at least one reinforcing element to the fiber composite component. The vacuum mat is then removed from the reinforced fiber composite component so that the vacuum mat can be reused.Type: GrantFiled: June 16, 2010Date of Patent: March 20, 2012Assignee: Airbus Operations GmbHInventors: Christian Luebbering, Hauke Lengsfeld, Roland Brandenburg
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Patent number: 8043080Abstract: A vacuum raising apparatus for the production of an expanded foodstuff is disclosed, comprising a fluid permeable mould for constraining the foodstuff. The permeability of the mould is substantially uniform throughout so that during vacuum raising fluids from the foodstuff can escape uniformly through the entirety of the mould. The invention also provides a method of vacuum raising a foodstuff comprising constraining an unraised foodstuff within such a mould according to and subjecting the foodstuff within the mould to heat under vacuum.Type: GrantFiled: December 5, 2008Date of Patent: October 25, 2011Assignee: Mars IncorporatedInventors: Louise Oliver, Kristina Williamsson, Micheal Zietek
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Publication number: 20110233828Abstract: An apparatus for manufacturing an absorbent body including a forming member having a predetermined face with a recessed form die formed thereon, moving the form die in one direction along a moving path intersecting a width direction of the predetermined face; a supply duct disposed in a predetermined position in the moving path, supplying a gas including fluid absorbent fibers from a supply opening section toward the predetermined face; a negative pressure room partition member provided on a side of the predetermined face, with the supply opening section provided on an opposite side of the predetermined face, the negative pressure room partition member partitioning a negative pressure room in cooperation with the predetermined face; and an exhaust duct exhausting a gas inside the negative pressure room so as to create a negative pressure inside the negative pressure room, wherein in a case of the form die passing a position of the supply opening section, by a gas from the supply duct being sucked through airType: ApplicationFiled: November 9, 2009Publication date: September 29, 2011Inventor: Takanori Yano
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Publication number: 20110204534Abstract: In manufacturing composite material by curing fluid, strength deterioration of the composite material due to repair before the fluid is cured is reduced. A suction hole is formed in a bag film (3) for sealing a space for fibers being impregnated with resin, after start of impregnation. The suction hole is covered by a plate (56) with holes (57). The resin is sucked from the space through the plate (56). According to such composite material manufacturing method, a defect, which occurs during fibers are impregnated with resin, can be repaired before the resin is cured without causing disorder and damage in the fibers. In a composite material formed from one repaired in the above way, the repaired portion is strong, namely, there is no strength deterioration due to repair after curing, and thus, the material is preferred as compared with a composite material which is repaired after resin is cured.Type: ApplicationFiled: November 18, 2009Publication date: August 25, 2011Inventors: Masayuki Kanemasu, Shigeru Nishiyama, Hideki Horizono
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Patent number: 7980840Abstract: A mold and method for vacuum assisted resin transfer molding of a fiber reinforced laminated structure are provided. The mold includes a first mold part and a second mold part. The first mold part defines a negative impression of the laminated structure, being structurally stable and forming a support for fiber reinforcement layers of the laminated structure. The second mold part connectable to the first mold part for closing the mold and defines together with the first mold part an enclosed space which can be evacuated. The mold further includes a flow duct for guiding a liquid polymer which is formed as a recess in the first mold part and/or a recess in the second mold part that is open towards the enclosed space and extends along a section of the periphery of the first mold part and/or the second mold part.Type: GrantFiled: March 31, 2009Date of Patent: July 19, 2011Assignee: Siemens AktiengesellschaftInventors: Claus Burchardt, Allan Hurup, Michael Nørlem, Bendt Olesen, Henrik Stiesdal
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Patent number: 7878787Abstract: The invention relates to a forming tool 1 for forming fiber products. The forming tool according to the invention comprises a permeable shell 3 with an internal cavity 5 that is filled with loose objects 6 such as spheres. The cavity 5 is enclosed by the shell 3 and a permeable cover 7.Type: GrantFiled: January 17, 2007Date of Patent: February 1, 2011Assignee: PAKIT International Trading Company Inc.Inventors: Björn Nilsson, Lars Graffton, Leif Båskman, Robert Eriksson
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Patent number: 7780885Abstract: The invention relates to a high pressure casting method for producing articles of sanitaryware and to a machine implementing the method. The method of type “A” comprises the steps of forming the thickness of the sanitaryware article, emptying the excess slip out of the mould and consolidating the article, all these steps being performed at a constant pressure equal in value to the maximum pressure of the step in which the thickness of the article is formed. In the method of type “B”, the steps of emptying out the excess slip and consolidating the sanitaryware article (14) are performed at a pressure equal to 75% of the maximum pressure of thickness formation. The casting machine comprises a discharge device for draining out the excess slip through a calibrated valve that enables the slip to be discharged without decreasing the pressure in the mould.Type: GrantFiled: August 18, 2004Date of Patent: August 24, 2010Assignee: Sacmi Cooperativa Meccanici Imola Societa CooperativaInventors: Alessandro Bernabei, Stefano Scardovi
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Patent number: 7641769Abstract: The present invention is a suction box for dehydrating the intermediate form of an inorganic building board during manufacturing or dehydrating the material slurry which is eventually molded into inorganic building boards. The suction box can change the open area ratio of dehydration space easily and can be used with pressure forming machines. The suction box has a frame member with a bottom plate, plural bridge members, plural spacer members and a pair of fixture members. The open area ratio is the space formed between each bridge member, including an interval with the bridge member and an outer frame portion in the frame member with the bottom plate.Type: GrantFiled: October 17, 2006Date of Patent: January 5, 2010Assignee: Nichiha CorporationInventor: Junyu Masaki
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Publication number: 20090278275Abstract: A porous mold is provided for forming ceramic products from a ceramic fluid mixture formed of a suspension of ceramic material in a liquid. A suction device is arranged for extracting or withdrawing at least part of the liquid through the porous mold. An actuator reciprocally displaces the first and second half-molds of the porous mold to form a chamber and to vary the volume of the chamber. A method for forming ceramic products includes the steps of pouring in a porous mold a ceramic fluid mixture formed of a suspension of ceramic material in a liquid, extracting at least part of the liquid through the porous mold and pressing the ceramic fluid mixture by reciprocally moving first and second half-molds of the porous mold.Type: ApplicationFiled: May 23, 2007Publication date: November 12, 2009Applicant: OFFICINE MORANDI S.R.L.Inventor: Eugenio Morandi
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Patent number: 7437991Abstract: A system for pressing and vacuum treatment of cheese solids is disclosed. The system includes a device for continuously treating loaded cheese solids containers with mechanical pressure and vacuum during movement of the containers in a circular path. Preferably, mechanical pressure and vacuum treatment are applied simultaneously to the loaded cheese solids containers.Type: GrantFiled: November 22, 2004Date of Patent: October 21, 2008Assignee: D. R. Tech, Inc.Inventor: Ricky Leffelman
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Publication number: 20080073805Abstract: Apparatus and method for checking the venting of a mold having one or more vents, the apparatus comprising a vacuum source, a flow connection between the source and the mold, and a vacuum gauge connected to the flow connection, whereby vacuum measurement by the gauge correlates with total effective venting area of the mold.Type: ApplicationFiled: September 27, 2006Publication date: March 27, 2008Inventor: Terry L. Schwenk
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Patent number: 7059845Abstract: The element has at least one porous permeable impression surface, on which the clay slip is deposited. A drainage system for the slip fluid is provided having a relatively thin, empty or porous chamber in the form of a slab which is incorporated into the body of the mould element itself, is disposed within the range of drainage action of the impression surface, and has a degree of porosity greater than the front part of the body delimited between said thin chamber and the impression surface, evacuation means connected to said thin chamber being provided to evacuate the drained fluid collected by the chamber. In particular, said thin chamber is disposed substantially parallel to the impression surface at a relatively short distance therefrom.Type: GrantFiled: February 26, 2002Date of Patent: June 13, 2006Assignee: Sacmi Cooperativa Meccanici Imola Societa CooperativaInventors: Vasco Mazzanti, Paolo Figliano
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Patent number: 6899794Abstract: A liquefied paper material is used as raw materials. A paper frame member 1 supporting a vibrating plate is paper-skimmed and formed. On paper-skimming and forming, a central hole for use in voice coils, air-release hole 1a releasing air pressure in a rear of the vibrating plate to outside due to vibration of the vibrating plate. A loudspeaker system is manufactured using the paper frame member 1.Type: GrantFiled: October 6, 2000Date of Patent: May 31, 2005Assignees: Mitsubishi Denki Kabushiki Kaisha, Morito Co., Ltd., Fuji Cone Seisakusho Co., Ltd., Foster Electric Co., Ltd.Inventors: Teruho Yamada, Masahiko Kawahara, Yukio Sugimoto, Seiji Mori, Toshikazu Iwasaki
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Patent number: 6733261Abstract: An improved method and apparatus for imparting a smooth surface to a gypsum fiber panels. The method involves imparting energy to the surface of the slurry as the slurry is dewatered just prior to rehydration. The apparatus used to impart the energy is an air lance including an air source such as a blower, a distribution manifold and a plurality of nozzles to direct the flow of air at the surface of the slurry. In operation, the air lance directs a flow of air against the surface of the slurry. The flow disrupts the slurry to a fraction of its total depth, thus dispersing clumps or flocs of crystals in the depth that would give the surface of the finished panel a rough surface if they were allowed to remain.Type: GrantFiled: May 31, 2002Date of Patent: May 11, 2004Assignee: United States Gypsum CompanyInventor: David Paul Miller
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Patent number: 6702966Abstract: A method is provided for manufacturing cement fiber sheets by supplying slurry primarily including fibers and cement as main material components onto a permeable sheet, and suctioning and dewatering the slurry. The method includes a foreign matter removing operation for removing foreign matter in the slurry material before supplying it to the permeable sheet, a thickness control operation for bringing the slurry to a specified thickness after the foreign matter removing process, and a leveling operation for smoothing the slurry surface after the thickness control process. Thus, treatment for foreign matter contained in slurry as well as thickness control, is throughly carried out, so that the product surface quality is ensured.Type: GrantFiled: June 30, 2000Date of Patent: March 9, 2004Assignee: Matsushita Electric Works, Ltd.Inventors: Shiniti Suzuki, Yoshiharu Ookubo, Hirosi Watanabe, Yasusi Sakamoto, Katunori Akiyama, Yosuke Tanaka
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Patent number: 6655942Abstract: A apparatus for pressure casting sanitary appliances including an outer framework, at least one block slidable within the outer framework arid having a male mould part and a female mould part, a fixed endpiece for said framework being provided with the male part which is adapted to be inserted into the female part of said at least one block, a movable head of the framework being provided with the female mould part which is adapted to receive the male part of said at least one block, means for thrusting said movable head in the direction of said fixed endpiece, and means for feeding pressurized slip into the cavities which form when said locks are positioned one against the other, wherein at least the mould portion defining the cavity of the female mould part is surrounded by at least one inflatable element provided with a pressurized fluid.Type: GrantFiled: April 7, 2000Date of Patent: December 2, 2003Assignee: Sacmi-Cooperativa Meccanici Imola -Soc. Coop. A.R.L.Inventor: Pietro Rivola
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Patent number: 6582562Abstract: A mold with integral screen comprising a body of material having a surface, the body has a grid-like pattern of vacuum holes extending through the body of material and opening through said surface and permitting a vacuum to be supplied to said surface, a screen overlying said surface, said screen and said body being formed of the same material as the body and being integral.Type: GrantFiled: July 2, 2001Date of Patent: June 24, 2003Assignee: Regale CorporationInventors: Gregory W. Gale, Jeffrey J. Haugen
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Patent number: 6451235Abstract: A method is disclosed for forming from a fiber slurry a three-dimensional fiber truss. The forming method involves compressing a fiber slurry or a fiber pulp between a pair of rigid foraminous dies to rapidly drive out most of the carrier fluid. The fiber retained between the dies is compacted into a pre-form fiber truss. The pre-form fiber truss is subsequently dried and consolidated in a heated press to produce a finished fiber truss. In panel applications, the fiber truss can be used by itself, or combined with other fiber trusses, to form a light-weight structural core for sandwich panels. Sandwich panels have numerous uses in packaging, material handling, construction, and furniture industries. Specific products include bulk bins, heavy-duty boxes, shipping containers, wall panels, roof panels, cement forms, partitions, poster displays, reels, desks, caskets, shelves, tables, and doors.Type: GrantFiled: April 26, 2000Date of Patent: September 17, 2002Inventor: Thomas L. Owens
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Patent number: 6409885Abstract: A pulp forming machine includes a forming head including a platen and plurality of mould carriers. The mould carriers are connected to the platen by mould carrier support means which allow the mould carrier and the platen to transmit forces perpendicular to the general plane of the platen but allow movement and expansion of each mould carrier in the general plane of the platen. Mould carrier to mould carrier locating means locate the mould carriers of opposing platens during the forming process to align moulds carried on the mould carriers with cooperating moulds of the cooperating platen.Type: GrantFiled: June 15, 2000Date of Patent: June 25, 2002Assignee: Fisher & Paykel LimitedInventors: Benno Frank Smit, Brent Richard Mooney, Christopher Arthur Good, Andre Brian Aish
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Patent number: 6398998Abstract: A method for producing shaped bodies of particulate material by introducing an easily flowable slurry of water and particulate material into a mold with perforated walls and by applying a sufficiently high pressure to the slurry in the mold so as to express a sufficient proportion of the liquid to allow physical contact and interengagement between the particles. The method may be carried out continuously in an extrusion process including introducing the slurry under high pressure into a extruder and conveying the slurry through a shaping section of the extruder to a draining and consolidation section of the extruder with drain holes and slits whereby a non-flowable, consolidated, shaped body leaves the extruder through an exit section.Type: GrantFiled: January 7, 1997Date of Patent: June 4, 2002Assignee: 3H Inventors ApSInventors: Herbert Krenchel, Helge Fredslund-Hansen, Henrik Stang
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Patent number: 6361726Abstract: A method and apparatus for making an inner packaging container, in which fiber components of a pulp slurry, which is prepared by dissolving or dispersing pulp, carbon fibers, and sparsely acetificated PVA fibers in water together with sizing agents and additives, are deposited to a desired thickness over a mold surface of a lower mold perforated with a number of pores and defined with a suction chamber, under the condition in which the lower mold is immersed in the pulp slurry, using a reduction of pressure occurring in the suction chamber, and molded into a desired shape by the lower mold along with an upper mold engaging with the lower mold, thereby forming a conductive packaging container having an integral structure.Type: GrantFiled: October 15, 1999Date of Patent: March 26, 2002Inventor: Soon-Jai Kim
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Patent number: 6361725Abstract: A process for making an artificial mineral or ceramic panels that can be used in gas fireplaces. The process uses a screen mold having simulated pattern elements to impart a realistic exterior surface to the article. A slurry of mineral fibers is injected under pressure into the mold forcing excess water therethrough leaving the fibers impinged within the mold. The article thus formed is dried in an oven and can be processed for additional decorative coatings.Type: GrantFiled: August 30, 1999Date of Patent: March 26, 2002Inventor: Wayne Sinsley
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Patent number: 6352617Abstract: An improved pulp-forming mold-releasing machine having a turnaround table being reciprocatingly rotatable at a prearranged position within the machine body. A net mold (pulp-sucking mold) includes protruding forming members on the surface thereof while the turnaround table of the machine frame body can be fitted with a lower mold (male mold) having a heating pipe therein on the other surface thereof. A reciprocating slide frame is disposed on the top of the machine frame body and includes an upper mold driving device with an air-oil-pressure diversion cylinder adapted to drive the upper mold (female mold) with a heating pipe to lift. An elevating pulp material container is disposed under the net mold of the machine frame body. The forming members of the net mold turn over to an upward direction after sucking pulp fiber.Type: GrantFiled: February 9, 2000Date of Patent: March 5, 2002Inventor: Vincent Lee
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Patent number: 6341952Abstract: A system for molding a tissue or substitute tissue product in a mold having an exterior surface, and an interior surface, wherein at least one portion of the interior surface is porous and whose pores are in continuous communication with the exterior surface, and wherein said mold can be fabricated using solid free-form fabrication techniques is disclosed.Type: GrantFiled: January 22, 2001Date of Patent: January 29, 2002Assignee: Therics, Inc.Inventors: Christopher M. Gaylo, Walter Flamenbaum, Miles J. Flamenbaum
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Patent number: 6302671Abstract: An improved porous mold for fabricating a formed mold pulp structure to protectively support at least one roll of web material. The mold has a forming surface that contains a first molding cavity surrounded by a periphery. The molding container has sidewalls extending from at least a portion of the periphery into the molding cavity. Within the molding cavity is at least one generally semi-cylindrical hump and land formation areas positioned adjacent the hump and one land formation areas at an end of the hump. A first mold forming surface on the hump is smooth and dished longitudinally such that a transverse cross-section of the first mold forming surface across the hump in the molding cavity is generally concave between the respective sidewalls. The first molding cavity also has a chamfered portion between the hump and an adjacent sidewall and the first molding cavity can have a plurality of humps separated by land formation areas.Type: GrantFiled: March 19, 1999Date of Patent: October 16, 2001Assignee: Great Northern CorporationInventors: James W. Gilfert, Robert W. Crandall, Loren D. Ervay
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Publication number: 20010008317Abstract: A method and system for molding a tissue or substitute tissue product in a mold having an exterior surface, and an interior surface, wherein at least one portion of the interior surface is porous and whose pores are in continuous communication with the exterior surface, and wherein said mold can be fabricated using solid free-form fabrication techniques is disclosed.Type: ApplicationFiled: January 22, 2001Publication date: July 19, 2001Inventors: Christopher M. Gaylo, Walter Flamenbaum, Miles F. Flamenbaum
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Patent number: 6261493Abstract: A method and system for molding a tissue or substitute tissue product in a mold having an exterior surface, and an interior surface, wherein at least one portion of the interior surface is porous and whose pores are in continuous communication with the exterior surface, and wherein said mold can be fabricated using solid free-form fabrication techniques is disclosed.Type: GrantFiled: March 20, 1998Date of Patent: July 17, 2001Assignee: Therics, Inc.Inventors: Christopher M. Gaylo, Walter Flamenbaum, Miles J. Flamenbaum
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Patent number: 6245199Abstract: A automatic pulp-forming mold-releasing machine comprising a lower mold disposed inside of a frame body, capable of reciprocatingly turning upside down and having protruding forming parts at top and bottom sides thereof which include air vents on the surface thereof capable of drawing and blowing air, and two synchronically reciprocatingly laterally shifting slide holders disposed at the top of the frame body and having upper mold lifting devices to drive the upper molds to move upwards and downwards, and air-drawing and air-blowing vent provided inside of the upper molds, and a liftable pulp container disposed under the lower mold of the frame body, characterized in that the pulp is absorbed to the forming parts at the bottom side of the lower mold; thereafter, it turns upside down to the top side, after dehydrated by the down-pressing of the upper mold, the formed pulp is absorbed upwards and lifted to be separate from the mold while the upper mold is laterally slid by the slide holder in position so that tType: GrantFiled: September 23, 1999Date of Patent: June 12, 2001Inventor: Vincent Lee
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Patent number: 6190151Abstract: A method of making a three-dimensional object from fibers includes attaching a mold made at least in part of elastomeric material to a porous support. The mold comprises a first mold member defining at least one channel in fluid communication with the porous support. Each channel has within it at least one second mold member. A mixture of fibers and fluid carrier is poured onto the mold. Thereafter, a pressure differential is created across the mold to create a flow of the mixture toward the porous support via the second mold members. This flow causes the fluid carrier to pass through the porous support, thus depositing the fibers within the recessed parts of the second mold members in the mold. Thereafter, the mold is compressed sufficiently to deform the mold and to provide uniform, normal pressure to the fibers which have been deposited in the second mold members.Type: GrantFiled: July 9, 1998Date of Patent: February 20, 2001Assignee: The United States of America as represented by the Secretary of AgricultureInventor: John F. Hunt
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Patent number: 6165398Abstract: A method of slip casting using a casting mold provided with a water-absorbent layer that has a self-water-absorbent ability, substantially has a water resistance, and is controlled in the saturated water content thereof, the slip casting being conducted by employing mainly a capillary sucking force as the driving force of the water-absorbent layer of cast formation. An open-cell porous body usable as the water-absorbent layer is produced by agitating a mixture comprising a compound having at least one epoxy ring in its molecule, a curing agent which cures the epoxy compound by reaction, a filler developing for a self-water-absorbent ability and a mold release property, and water to prepare an O/W emulsion slurry and curing the slurry, as such in a hydrous state.Type: GrantFiled: February 26, 1998Date of Patent: December 26, 2000Assignee: Toto Ltd.Inventors: Akio Matsumoto, Takeshi Sato, Yoshifumi Misumi, Akira Hirayama, Katsuhiro Hasebe, Yoshinori Yamashita
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Patent number: 6103179Abstract: The invention relates to a method and an arrangement for manufacturing a fiber product. The method and the process are characterized in that a first male mold (6) is immersed in stock in a molding tank (2a). By means of a vacuum, fibers are induced to form a fiber layer of predetermined thickness on the male mold (6). The male mold (6) is thereafter removed from the molding tank (2a) and a female mold (8) is brought under force against the male mold (6) in order to express the stock water, following which the fiber product (P) is transferred to the female mold (8). A second male mold (10) is brought under force against the female mold (8) so that the fiber is subjected to pressing in order to increase the dry solids content of the fiber product and give this a predetermined external structure, following which the fiber product (P) is released and subjected to final drying under the effect of microwave or IR radiation.Type: GrantFiled: June 12, 1998Date of Patent: August 15, 2000Assignee: Celtec Development ABInventor: Johan Peter Larsson
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Patent number: 6083447Abstract: An apparatus and method for molding articles from a fibrous slurry. The apparatus comprises a forming die manufactured from a water insoluble, porous, relatively rigid and easily shaped material having molding surface shaped to the contour of the article to be molded, a vacuum vessel for receiving the forming die, and an opening through the vacuum vessel for communicating with a vacuum means for applying suction through the forming die to draw the slurry against the molding surfaces to form a fiber layer having the configuration of the article to be molded.Type: GrantFiled: June 17, 1997Date of Patent: July 4, 2000Assignee: Cin-Made Packaging Group, Inc.Inventor: Todd Thomas Turner
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Patent number: 6048440Abstract: An improved flexible manufacturing process for making molded fiber products uses a molding machine provided with a large number of ports for mounting a variety of molds. Quick release mold attachments permit rapid changeover of production output. The molds used are designed to have a predetermined total height, and platen stops maintain this design separation during transfer of the molded product. An expanded stock chest is provided to permit a higher pulp usage rate. Separate positive air supply lines are provided for the different transfer mold sites. Using these separate lines, a novel air volume and flow control method is provided to control the volume of air applied to release products from transfer molds, permitting manufacture of a variety of complex structures. The air flow controls permit control of both the rate of flow and the duration of the selected rate of flow of positive pressure air, thus providing total volume control.Type: GrantFiled: July 21, 1997Date of Patent: April 11, 2000Assignee: Moulded Fibre Technology, Inc.Inventor: Roger J. Baker
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Patent number: 6013215Abstract: A method of compression-molding a slurry of a hydraulic inorganic material such as cement or slag, a light-weight aggregate, a reinforced fiber material and other filler material kneaded with water so as to manufacture an inorganic molded product. The slurry is put into a molding frame having a filtering cloth placed over the bottom surface thereof and is then compression-molded in the molding frame by using a molding die while it is suction-dehydrated from on both sides of the molding die surface and the filtering cloth surface. The molding die has a number of vent holes for sucking-dehydration each of which vent holes comprises a small-diameter hole and a large-diameter hole continuous therewith.Type: GrantFiled: March 10, 1998Date of Patent: January 11, 2000Assignee: Mitsui Wood Systems, Inc.Inventors: Yoshimi Iwamoto, Kiyohisa Kitagawa, Kazuhiro Kurihara, Masahiro Hirao
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Patent number: 5824249Abstract: A method for fabricating molded parts utilizing a plurality of mold details having respective molding surfaces defining respective contours. The method selecting a first group of the mold details and disposing the selected mold details adjacent to one another in a first predetermined spatial relationship so that the molding surfaces of the selected mold details are contiguous, to define a first molding cavity for producing a first desired molded part. A hardenable polymeric material is injected into the molding cavity and hardened to form the desired molded part. Various combinations of mold details can be assembled to produce multiple parts in a common mold frame.Type: GrantFiled: February 28, 1996Date of Patent: October 20, 1998Assignee: Dow-UT Composite Products, Inc.Inventors: James Leitch, Richard Olds
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Patent number: 5766647Abstract: A molding tool used for molding products of fibrous material is manufactured efficiently by employing a lamination molding method. A molding tool having a porous structure used for molding products of fibrous material such as pulp molding is manufactured by lamination molding method (a method for molding a three dimensional product by subjecting a material to be laminated to prescribed treatment, the method includes a photo-setting resin method). Material lacks or voids are formed on each layer of a laminating material, the layer is laminated one above another, thereby, many suction holes are formed on the molding tool as the material lacks.Type: GrantFiled: February 16, 1996Date of Patent: June 16, 1998Assignee: Sony CorporationInventor: Junichi Kuzusako
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Patent number: 5741388Abstract: The apparatus according to the invention for the slip casting of ceramic parts has essentially a bell which is arranged on a holding device and is vertically displaceable and a plurality of mold parts. The latter together with a base part form a mold which stands on a rigid plate. During operation of the apparatus, the mold and the bell covering it form an intermediate space in which are arranged a plurality of inflatable inflatable bladders air pockets which can cooperate in order to clamp the mold and prevent it from moving during the entire casting process. For this purpose, the inflatable bladders are connected to a compressed air source. In addition, a slip supply pipe which communicates with the stated compressed air pipe leads into the mold cavity of the mold, so that pressure equilibration between the mold cavity and the inflatable bladders can be brought about by means of the apparatus according to the invention.Type: GrantFiled: June 29, 1995Date of Patent: April 21, 1998Assignee: Keramik Holding AG LaufenInventors: Thomas Gerster, Gerold Spieler, Konrad Dublin, Stefan Bitter
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Patent number: 5700409Abstract: A method of molding at article capable of enduring temperatures of at least 1250.degree. F. without deformation or deterioration. High temperature resistant fibers cut to a length of one eighth of an inch are mixed with water to create a pool of slurry. A flexible mold having an article-forming cavity affixed to a suction chamber having means for injecting slurry into the cavity and means for the flow of liquid out of the cavity when the flexible mold and the suction chamber are under vacuum to create within the mold cavity an article of compacted high temperature resistant fibers. The mold is flexed causing the molded article to be released from the cavity within the mold.Type: GrantFiled: November 13, 1996Date of Patent: December 23, 1997Inventor: Arthur A. Corry