Including Provision To Remove Entrained Gas Patents (Class 425/420)
  • Patent number: 9283696
    Abstract: A molding device for curing of composite components comprising: a molding die, composite material in the molding die, heat application means, sheathing means for the composite material and the molding die and vacuum means for the application of vacuum to the composite material in the molding die. The heat application means comprise at least one heat pipe with a heat exchanger attached to the molding die for thermal conduction to the composite material.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: March 15, 2016
    Assignee: Airbus Helicopters Deutschland GmbH
    Inventors: Thomas Hertle, Jan-Christoph Arent, Christoph Loy
  • Patent number: 8794951
    Abstract: An object of the present invention is to provide a mold for resin molding which ensures ventilation characteristic without requiring an enormous amount of work. The mold for resin molding of the present invention includes: a mold 12; a design layer 16 formed inside the mold 12; and a air permeable interposing layer 22 for forming the design layer 16 on an inner surface of the mold 12. The mold 12 forms a ventilating throughhole 14. The design layer 16 is made of a resin having projections and depressions on the surface, and has a ventilating throughhole 18 formed so as to couple to the ventilating throughhole 14. The air permeable interposing layer 22 is arranged next to the inner surface of the mold 12 so that an inner surface of the design layer 16, the ventilating throughhole 18 of the design layer 16, and the ventilating throughhole 14 of the mold 12 couple to each other.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: August 5, 2014
    Assignee: Tanazawa Hallosha Co., Ltd.
    Inventors: Sadayuki Yoneshima, Masayuki Sakai, Hisao Aota, Hiroshi Watanabe, Mitsuaki Samejima, Yumiko Omiya
  • Patent number: 8758006
    Abstract: Processes for manufacturing hollow structures such as spars for helicopter rotor blades, fixed wings for aircraft, and other aerostructures can include the provision of a path for gases to exit the material from which the spar is formed as the material is heated and cured, to help eliminate voids within the material caused by the presence of such gases.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 24, 2014
    Inventor: Franklin D. Carson
  • Patent number: 8550799
    Abstract: At least one of first and second mold portions defines a mold cavity to receive molten plastic and form therefrom at least one molded part, and is movable relative to the other between (i) a closed position for sealing the mold cavity or cavities and molding at least one part therein, and (ii) an open position defining a fluid passageway between the mold portions and permitting the passage of a fluid sterilant therein. A fluid sterilant source is connectable in fluid communication with the fluid passageway for introducing the sterilant therein in the open position, contacting with the sterilant the surfaces of the first and second mold portions forming the fluid passageway and located adjacent to the at least one mold cavity, but not contacting an interior surface of a molded part within the mold cavity, to sterilize the exposed mold surfaces and thereby prevent contamination of the molded part.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: October 8, 2013
    Assignee: Medical Instill Technologies, Inc.
    Inventors: Daniel Py, Benoit Adamo, John Guthy, Nathaniel Houle, Giovanni Rodriguez
  • Patent number: 8506283
    Abstract: A device, such as a tamale maker, for inserting edible filling into dough, generally includes a lower assembly and an upper assembly. The lower assembly includes an elongate cylindrical mold sleeve comprised of a plurality of separable longitudinal segments around a central cavity and a base for receiving the mold sleeve so as to define a container for receiving dough. The upper assembly comes in two forms, one having a plunger for use with masa dough having a firm consistency so it can be formed into a self-supporting shape, and one having tines for inserting a solid or frozen filling into flowable or soft masa dough. The tamale is removed from the container by separating one or more sleeve segments of the container to expose the tamale.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: August 13, 2013
    Inventor: Edward Ray Gonzales
  • Patent number: 8282383
    Abstract: The present invention is directed towards a system for expelling a gas positioned between a substrate and a mold, the substrate and the mold further having a liquid positioned therebetween.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: October 9, 2012
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Sidlgata V. Sreenivasan, Ian Matthew McMackin, Pankaj B. Lad
  • Patent number: 8216506
    Abstract: 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: Grant
    Filed: June 4, 2008
    Date of Patent: July 10, 2012
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Norio Takakura, Takashi Iizuka, Ryohei Kuramatsu
  • Patent number: 8215945
    Abstract: An apparatus for forming a hollow FRP article by internal pressure molding includes a vacuum chamber, a forming die positioned in the vacuum chamber, a vacuum-chamber opening/closing mechanism, a composite-body support device for supporting a composite body without making the composite body come into contact with the forming die in a state where the forming die is opened by the vacuum-chamber opening/closing mechanism, the composite body including an airtight internal-pressure holding tube and a prepreg fitted on said airtight internal-pressure holding tube, an evacuation system for evacuating the vacuum chamber, an internal-pressure supplying device for applying pressure to an inside of the internal-pressure holding tube, and a controller for actuating the vacuum-chamber opening/closing mechanism to clamp the forming die to thereby bring the forming die and the composite body into intimate contact with each other.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: July 10, 2012
    Assignee: Fujikura Rubber Ltd.
    Inventors: Norio Matsumoto, Akiyasu Higuchi, Masaki Wakabayashi
  • Patent number: 8152510
    Abstract: The present invention relates to a method for producing baked goods and a mold apparatus having a cavity in a desired shape for use in said method, the mold apparatus comprising a gap that allows for venting of vapor produced during heating or baking of a mixture in the mold apparatus but does not allow any significant amount of the mixture to escape from the cavity of the mold apparatus via the gaps.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 10, 2012
    Assignee: Biosphere Industries, LLC
    Inventors: Elie Helou, Jr., David A Dellinger, Ryan M Kane, Matt A Spradlin
  • Publication number: 20110256255
    Abstract: A mold includes a parting surface, runners, mold cavities, gates and primary air-venting grooves defined in the parting surface. The gates connect the respective runners to the corresponding mold cavities. Each primary air-venting groove includes an air-receiving groove portion and an air-venting groove portion in communication with the air-receiving groove portion. The air-receiving groove portion communicates with the gate and surrounds the corresponding mold cavity. The air-venting groove portion extends to and terminates at a corresponding edge of the parting surface.
    Type: Application
    Filed: July 22, 2010
    Publication date: October 20, 2011
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: MING-LUNG GUO
  • Patent number: 7833003
    Abstract: Provided are an in-mold degassing structure, which acts by using no external control means, and a mold having that structure. The degassing structure comprises a sliding member (10) for receiving the pushing force of an elastic member from the bottom side, and a sliding member acceptor (20) for accepting the sliding member (10) slidably in the vertical direction. The sliding member (10) includes a vertical bottomed hole (12) communicating with a mold cavity and at least one side opening (13) communicating with the vertical bottom hole and opened to the side face. The sliding member acceptor (20) includes degassing ports (21) communicating in an initial state with the side opening (13) of the sliding member and closed when the sliding member is slid in a direction against the elastic member by the flow tip portion of the molten material.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: November 16, 2010
    Assignee: Kabushiki Kaisha Saito Kanagata Seisakusho
    Inventor: Teruhiko Saito
  • Patent number: 7691313
    Abstract: The present invention is directed towards a method and a system of expelling a gas positioned between a substrate and a mold, the substrate and the mold further having a liquid positioned therebetween.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: April 6, 2010
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Sidlgata V. Sreenivasan, Ian M. McMackin, Pankaj B. Lad
  • Publication number: 20100047382
    Abstract: A defoaming device for a viscosity fluid, equipped with a container or containers having a receiving section for the viscosity fluid, and a supply port and an outlet for the viscosity fluid, communicated with the receiving section, the defoaming device being provided with: a supply pipe for supplying the viscosity fluid to the supply port; a supply control device for the viscosity fluid at the supply port; a sprinkler for discharging the viscosity fluid supplied from the supply port into the receiving section; a pressure control device for controlling a pressure in the receiving section; an outlet tube for discharging the viscosity fluid from the outlet; and an outlet control device for the viscosity fluid in the outlet, as well as, a molding system provided with the defoaming device.
    Type: Application
    Filed: January 9, 2008
    Publication date: February 25, 2010
    Inventor: Fumitaka Suto
  • Patent number: 7641840
    Abstract: The present invention is directed towards a method of expelling a gas positioned between a substrate and a mold, the substrate and the mold further having a liquid positioned therebetween.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: January 5, 2010
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Mahadevan GanapathiSubramanian, Yeong-jun Choi, Mario J. Meissl
  • Publication number: 20090238912
    Abstract: The present invention relates to a method for producing baked goods and a mold apparatus having a cavity in a desired shape for use in said method, the mold apparatus comprising a gap that allows for venting of vapor produced during heating or baking of a mixture in the mold apparatus but does not allow any significant amount of the mixture to escape from the cavity of the mold apparatus via the gaps.
    Type: Application
    Filed: December 19, 2008
    Publication date: September 24, 2009
    Inventors: Elie Helou, JR., David A. Dellinger, Ryan M. Kane, Matt A. Spradlin
  • Publication number: 20090092702
    Abstract: The invention relates mold, particularly a mold for producing foam articles. In a preferred embodiment, the mold comprises a lid and a bowl releasingly engageable to define a mold cavity, the lid comprising: (i) a vent having a passageway for gas to escape from the mold cavity, and (ii) a plurality of grooves connected to the vent. The use of a plurality of grooves/slots in the mold cavity surface effectively acts as a siphon to draw gas away from the composition to be molded. The plurality of grooves/slots is connected to one or more vents which then allows for escape of the gas from the mold cavity to the exterior of the mold.
    Type: Application
    Filed: December 15, 2008
    Publication date: April 9, 2009
    Applicant: WOODBRIDGE FOAM CORPORATION
    Inventors: Allan K. CATHCART, Leslie E. CLARKE, Larry A. GENYN, Louie J. MENESES, Randall J. LANSUE
  • Patent number: 7481645
    Abstract: The present invention relates to a method for producing baked goods and a mold apparatus having a cavity in a desired shape for use in said method, the mold apparatus comprising a gap that allows for venting of vapor produced during heating or baking of a mixture in the mold apparatus but does not allow any significant amount of the mixture to escape from the cavity of the mold apparatus via the gaps.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: January 27, 2009
    Assignee: Biosphere Industries, LLC
    Inventors: Elie Helou, Jr., David Dellinger, Ryan Kane, Matt Spradlin
  • Patent number: 7360749
    Abstract: Semi-circular cover members 17 and 17 having a spring function for opening and closing the openings of pores 15S are provided on the cavity inner wall side of a porous air vent 15 in order to close the openings of the above pores 15S while a small space remains between the above cover members 17 and 17 and the openings of the pores 15S of the porous air vent during vulcanization, whereby the occurrence of the occlusion of the above pores 15S is reduced and stains adhered to the cavity inner wall side of the mold 10 are removed by physical means such as a blast treatment while the above cover members 17 and 17 are closed at the time of cleaning to remove the stains of the above mold 10. Further, the above openings are opened as required to allow a cleaning liquid 24 go into the above pores 15S to clean the above mold 10 and remove stains in the pores 15S.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: April 22, 2008
    Assignee: Kabushiki Kaisha Bridgestone
    Inventor: Kouji Hirose
  • Patent number: 7134637
    Abstract: The present invention relates to a gas purging block for use with injection molding and die casting systems, which includes a stationary-side block adapted to be removably mounted to a stationary-side mold half of the injection molding or die casting system, and an ejector-side block adapted to be removably mounted to an ejector-side mold half of the injection molding or die casting system. At least one of the stationary-side block and the ejector-side block includes a pair of channels extending through the block adapted to selectively function as conduits for cooling fluid and as mounting bores for mounting the block to the respective mold half.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: November 14, 2006
    Inventor: Richard L. Dubay
  • Patent number: 6905647
    Abstract: Golf ball 1 includes a core 2 and a cover 3. The core 2 has two layers including a center 4 and a mid layer 5. The mid layer 5 is formed by covering the center 4 with two half shells comprising a rubber composition, and by compression and heating of the center 4 and half shells in a mold. The rubber composition contains solid particles dispersed therein. The solid particles have a ratio “D/T”, i.e., a ratio of the particle size D to the thickness of the mid layer T, of equal to or greater than 0.3. Upon molding, the solid particles inhibit the center 4 to approach a cavity face. Accordingly, deviation of mass of the mid layer 5 can be suppressed. The solid particles have a ratio “W/T”, i.e., a ratio of the radial width W thereof to the thickness of the mid layer T, of from 0.3 to 1.0.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: June 14, 2005
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Seiichiro Endo, Keiji Ohama
  • Patent number: 6846442
    Abstract: A process for producing a golf ball which includes the steps of placing a rubber composition into the cavity of a mold having an upper portion and a lower portion, clamping the upper portion and the lower portion together at a moving velocity of from 0.03. mm/s to 1.0 mm/s, causing excess rubber composition to flow out from the cavities; and unclamping the mold and removing from the mold cavity spherical bodies and associated rubber flashers formed in the mold cavities.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: January 25, 2005
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kazushige Sugimoto
  • Patent number: 6838036
    Abstract: A golf ball 1 has a core 2 and a cover 3. For molding a core 2, a rubber composition is extruded from a kneading machine, and cut at a predetermined length to obtain a preforming material. The preforming material is placed in a mold and the mold is clamped. An upper portion and lower portion of the mold mate for more than or equal to 15 seconds, and thereafter they are unclamped until a clearance between the upper and lower portions becomes from 3 mm to 8 mm, then, the mold is shut. The shutting time is determined to be from 0.5 second to 5.0 seconds. By this unclamping of the mold, a residual air in a spherical cavity is released, which results in elimination of defective products.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: January 4, 2005
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kazushige Sugimoto
  • Patent number: 6805819
    Abstract: A cylindrical concrete receiver 10 is caused to project from a top section 3 of a body section 11 forming a frame 2. When concrete 5 is filled in the body section 11, part of the concrete 5 is caused to overflow inside the concrete receiver 10 and then, pressure is applied to the concrete 5 overflowed in the concrete receiver 10 by a weight 12.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: October 19, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Eiji Tsuyuki, Koujiyu Matsumoto, Noriaki Tamasaki
  • Patent number: 6604930
    Abstract: A molding machine for a concrete mix includes a frame with a vibratible mold having a vertical through cavity with hollow cores extending downwardly in the mold cavity. A pallet receiver with a pallet thereon is movable upwardly to close the bottom of the cavity. Core tops have openings therein and ventilation pins are receivable to block air passage through the core top openings when the pallet is in mold closing position. Cups with bottom openings are in the cores below the top openings to receive and guide the pins and passageways around the pins permit suction-braking air to move past the pins to the cup bottom openings when the pins move downwardly away from the core top openings.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: August 12, 2003
    Assignee: Besser Company
    Inventors: Howard N. Lumsden, Lee F. Marzean, Donald R. Andor, Michael Ponik
  • Patent number: 6431848
    Abstract: A dough divider including a hopper with a lid and a press plate vertically slidable within the hopper. The hopper is adapted to accept dough between the lid and the press plate, and the press plate is adapted to move towards the lid in order to compress the dough between the press plate and the lid within the hopper. The dough divider further includes a two part pressure relief system including a reversible cylinder assembly and at least one pressure relief opening. The reversible cylinder assembly is connected to the press plate and adapted to move downward in order to allow the press plate to move towards a bottom of the hopper when pressure applied to a top of the press plate from the dough within the hopper reaches a predetermined level. The pressure relief opening is adapted to relieve pressure within the hopper between the press plate and the lid by allowing the dough to escape from the hopper through the pressure relief opening when the press plate has reached the bottom of the hopper.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: August 13, 2002
    Assignee: Oliver Products Company
    Inventor: Bernard L. Petersen
  • Patent number: 6378596
    Abstract: A device for regulating the evacuation of air and gas from a casting die. It comprises two complementary bodies (11, 12), which can be closed, face to face, one on top of another, and which delimit an evacuation channel (13). The evacuation channel (13) is defined by a static surface (16) of the first of the bodies (12) and by a movable surface (18) that is arranged in front of and in parallel to the static surface (16) and that consists of the front surface of a movable element (17). The movable element (17) is arranged in the second of the bodies (11) and can be moved at right angles to the static surface (16) in order to vertically adjust the section of the evacuation channel.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: April 30, 2002
    Assignee: Unitecno S.r.l.
    Inventors: Fausto Arrigotti, Sergio Arrigotti
  • Patent number: 6280176
    Abstract: A vent tube assembly is disclosed for use in a vent hole commonly found in metal molds which are used to produce, by rotational molding processes, a wide variety of plastic goods. The main body of the vent tube assembly is produced from a heat resistant, thermoplastic composition. Preferably, the composition will be polyetheretherketone (PEEK). The vent tube assembly resembles a probe-like rod comprising: a large diameter annular top section; an annular mid-section that is substantially smaller in diameter than the annular top section; and an annular bottom section that is slightly smaller in diameter than the annular mid-section and that terminates in with a rounded innermost tip. An elongated central bore is provided through the vent tube assembly. The central bore, along with a counterbore located near the top of the annular top section, provides an air escape passageway. The passageway fluidly communicates with the interior of the mold via a plurality of pore-like holes situated near the innermost tip.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: August 28, 2001
    Assignee: Wheeler Boyce Co.
    Inventors: Alden C. Boyce, James Kenneth Reash
  • Patent number: 6238199
    Abstract: A device for producing formed parts of a not freely flowable mixture of chip and/or fiber materials and a heat-hardenable binders has a first stationary pressing tool part, a second pressing tool part vertically moveable relative to the first pressing tool part, one of the pressing tool part forming a filling chamber and being provided with guiding passages for evaporation of the mixture, and a blocking element means provided for blocking of the guiding passages.
    Type: Grant
    Filed: May 15, 1999
    Date of Patent: May 29, 2001
    Assignee: Werzalit AG + Co.
    Inventors: Karl-Heinz Schallenmueller, Gerd Weinberg, Helmuth Huber
  • Patent number: 6189589
    Abstract: In a method and molding apparatus for laminated molded bodies, a thermal-molding felt and a thermoplastic resin sheet, respectively in hot and soft condition, are set or placed on a mold face of cold-pressing-molding lower mold. A cold-pressing-molding upper mold lowers onto the lower mold to press the the thermal-molding felt and thermoplastic resin sheet. Simultaneously, cooling air is supplied to center portion of the thermal-molding felt through a blowing pipe protruding from mold face of the thermal-molding felt side and intruding into the felt accelerating circulation of cooling air and cooling of the thermoplastic resin sheet.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: February 20, 2001
    Assignee: Kasai Kogyo Co., Ltd.
    Inventors: Kazuhiro Tokunaga, Takashi Tsubosaki, Shoichi Itoh, Hisashi Yamada
  • Patent number: 6033501
    Abstract: A process for preparing a cushion structure by loosening fiber aggregate comprising crimped staple fibers and binder fibers, having a melting points below that of the matrix fibers and dispersed therein, filling the loosened aggregate into gas-permeable mold cavity accompanied with a pressurized air system, and thermoforming the same by heating followed by cooling, wherein the matrix fibers are non-elastomeric, crimped polyester staple fibers and the binder fibers are conjugated staple fibers, comprising a thermoplastic elastomer having a melting point at least 40.degree. C. below that of the matrix fibers and non-elastomeric polyester, the thermoplastic elastomer occupying at least one half of the surface area of the conjugated fibers.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: March 7, 2000
    Assignee: Teijin Limited
    Inventors: Masanao Yamaguchi, Hideki Ohkouchi
  • Patent number: 5928680
    Abstract: An evacuable KBr die includes a base, a cylindrical barrel, a pellet arranged in a bore of the barrel, a piston which also fits within the bore, and an evacuable pad. O-rings are provided to create seals between the various components. Sample material for analysis is pressed between the piston and the pellet while a vacuum is created at the top and bottom of the sample to remove water vapor from the sample. For this purpose, passages are provided in both the base and barrel to transmit the vacuum from the pad to the upper and lower ends of the bore.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: July 27, 1999
    Inventor: Jay Tadion
  • Patent number: 5866176
    Abstract: A moulding system for moulding a mass with a pasty or dough-like composition, such as a mass of meat, for example for moulding hamburgers, includes a housing having a chamber which is delimited by internal walls of the housing. The chamber emerges on the outside of the housing. A displaceable mould plate, which is formed in a manner corresponding to the chamber, fits with a small degree of play into the chamber and has at least one mould cavity. The housing has a feed opening, which opens into the chamber, for the mass to be moulded, such that, in the position in which the mould plate has been slid into the housing, the mould cavity is in communication with the feed opening and, in the position in which the mould plate has been slid out of the housing, the mould cavity is situated outside the housing.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: February 2, 1999
    Assignee: Koppens B.V.
    Inventors: johannes Antonius Barbara Maria Baars, Jacobus Johannes Maria Van Der Laak, Johannes Gertrudes Simon Driessen
  • Patent number: 5863570
    Abstract: The invention is directed to a molding apparatus, including a cylinder having an interior sidewall and a fluid inlet, and defining an inner cavity. A porous plate is disposed within the inner cavity, and is disposable in a loading position wherein the inner cavity is divided into a fluid flow chamber and a material chamber. A ram having an outside diameter which is less than the diameter of the cylinder interior sidewall is slidable within the cylinder.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: January 26, 1999
    Assignees: Zimmer, Inc., Purdue Research Foundation
    Inventors: Thirumalai N. C. Devanathan, Karthik Ramani
  • Patent number: 5834035
    Abstract: In an apparatus for molding resin to seal electronic parts, an internal die space defined at least by pots, cull portions, resin passages and cavities when an upper mold section and a lower mold section are closed, is cut off or sealed from the exterior atmosphere. Thereupon the die space is evacuated using a first evacuation by a vacuum source and a second or instantaneous evacuation by an instantaneous evacuation mechanism. The vacuum source for the first evacuation may be an active vacuum pump, while the instantaneous evacuation mechanism may be a vacuum tank that has been previously pumped down, for example. Using this apparatus, it is possible to quickly improve the degree of vacuum in the internal die space by efficiently and reliably discharging air, moisture and gas from the internal die space to the exterior due to a synergistic action of the evacuation and the instantaneous evacuation. Consequently, the formation of voids in resin molded members is prevented.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: November 10, 1998
    Assignee: Towa Corporation
    Inventors: Michio Osada, Yoshihisa Kawamoto, Makoto Matsuo, Koichi Araki
  • Patent number: 5811138
    Abstract: A device for the encapsulation of syringes and other hazardous plastic waste having needles or other sharp elements, the device having a melt chamber with a reciprocating compaction head, the weight of the compaction head providing the force to conform molten plastic into a puck covering the needle points. Flow release apertures allow for escape of gases and provide an overflow conduit for excess molten plastic. The puck adheres to the compaction head and is ejected back into the melt chamber for removal and disposal.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: September 22, 1998
    Assignee: Imagination Medical, Inc.
    Inventor: Richard Yelvington
  • Patent number: 5705203
    Abstract: Methods and systems for forming hinged starch-bound matrices. Starch-based compositions are molded between heated molds in order to form a cellular matrix and also to remove the water from the starch-based compositions in order to form a binding matrix of solidified starch. The molding apparatus is configured to form one or more creases within the hinge area in order to define one or more lines upon which the hinge will bend. The molding apparatus is also configured such that the region of the mold corresponding to the inner surface of the hinge area will transfer heat more slowly to the inner hinge surface, resulting in reduced thickness of the skin of the inner hinge. This increases the collapsibility, or ability of the inner surface of the hinge to fold or buckle, during the bending action. This in mm reduces the bending radius of hinge such that the hinging action exerts less strain on the outer surface of the hinge.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: January 6, 1998
    Assignee: E. Khashoggi Industries
    Inventors: Per Just Andersen, Simon K. Hodson
  • Patent number: 5660863
    Abstract: An apparatus for the production of three-dimensional fiber-reinforced ceramics, which apparatus contains a foundation open at an upper end thereof and enclosing an empty space and a cylinder disposed on the foundation, the empty space of the foundation and an open space of the cylinder integrally forming a continuous empty space, and the continuous empty space having an empty region at a lowermost portion thereof having a filter plate set fast therein and having a pressure piston set fast above said filter plate to form between the pressure piston and the filter plate an empty region for accommodating a slurry for the production of the three-dimensional fiber-reinforced ceramics;wherein the filter plate contains a porous sintered metallic plate and a filter paper having holes not more than 0.3 .mu.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 26, 1997
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Kikuo Nakano, Akira Kamiya
  • Patent number: 5591463
    Abstract: Apparatus for the thermoforming of hollow objects at a base comprises thermoforming of the objects from a sheet of thermoplastics material in a half of a double female mould that can be moved between a forming area against a male die and a discharge area to one or the other side of the forming area. The thermoformed objects are transferred from the discharge area onto a plurality of receiving formers moving sequentially stepwise along a track. One or more processing or handling operations are performed on the objects while the formers are stationary.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: January 7, 1997
    Assignee: ISAP OMV Group S.p.A.
    Inventor: Pietro Padovani
  • Patent number: 5591461
    Abstract: A powdery sample forming apparatus, which is used for measuring a water content of powder and in which all operations from powder supply to powder discharge are automated, includes a vertically elongated housing which has a sample inlet port at an upper portion thereof and a sample discharge port at a lower portion thereof. A porous plate or a screen plate divides the housing into longitudinal compartments and a gate opens and closes a bottom portion of one of the divided compartments. A vertically movable press member in the compartment having the gate presses the sample against the gate. A window is formed in a side wall of the compartment having the gate and can be cleaned with air under pressure or a vacuum.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: January 7, 1997
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Takashi Komatsu, Hiroomi Uehara, Syuji Shinkai
  • Patent number: 5569425
    Abstract: Method and apparatus for quickly, and substantially uniformly, heating and cooling a bed of polymeric fibers having high melting point and low melting point fibers therein for softening the low melting point fibers and bonding them to the high melting point fibers to form a seat cushion. Hot and cool gases are flowed through the bed of fibers via a plurality of ventilator spikes extending into the fibers in the mold cavity to effect substantially uniform gas flow rates through the fibers for quick more uniform heating/cooling of the fibers.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: October 29, 1996
    Assignee: General Motors Corporation
    Inventors: Prem P. Gill, Paul W. Chrenka, David W. Whitehead
  • Patent number: 5507633
    Abstract: In an apparatus for molding resin to seal an electronic part, a sealed space portion is formed between molding surfaces of an upper mold section and a lower mold section by covering an outer side periphery of a pot, a resin path and a cavity. A resin tablet is heated at its bottom portion and peripheral portion in the pot of the lower mold section to expand upwardly from its top portion. Air and moisture included inside the resin tablet is expelled into the sealed space portion which is evacuated including any air and moisture inside the sealed space portion, whereby the formation of voids in the molded resin body is avoided.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: April 16, 1996
    Assignee: Towa Corporation
    Inventors: Michio Osada, Yoshihisa Kawamoto
  • Patent number: 5482665
    Abstract: Method and apparatus for quickly, and substantially uniformly, heating and cooling a bed of polymeric fibers having high melting point and low melting point fibers therein for softening the low melting point fibers and bonding them to the high melting point fibers to form a seat cushion. Hot and cool gases are flowed through the bed of fibers to effect the heating/cooling.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: January 9, 1996
    Assignee: General Motors Corporation
    Inventor: Prem P. Gill
  • Patent number: 5480606
    Abstract: Reverse gating is added to a conventional compression molding machine so that when the molding cavity is filled with material in excess of the amount required to mold a part, the material flows from the cavity to a pressure chamber to be vented. Pressure in the chamber allows back flow of the material from the chamber to the molding cavity during cooling to compensate for shrinkage.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: January 2, 1996
    Assignee: Sunbeam Plastics Corporation
    Inventor: Randall K. Julian
  • Patent number: 5435953
    Abstract: In a method for molding resin to seal an electronic part, a sealed space portion is formed between molding surfaces of an upper mold section and a lower mold section by covering an outer side periphery of a pot, a resin path and a cavity. A resin tablet is heated at its bottom portion and peripheral portion in the pot of the lower mold section to expand upwardly from its top portion. Air and moisture included inside the resin tablet is expelled into the sealed space portion which is evacuated including any air and moisture inside the sealed space portion, whereby the formation of voids in the molded resin body is avoided.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: July 25, 1995
    Assignee: Towa Corporation
    Inventors: Michio Osada, Yoshihisa Kawamoto
  • Patent number: 5399081
    Abstract: A film molding apparatus wherein a film is immersed in a vessel of a film supply unit, the film containing at least 50 weight % swelling agent relative to a polymer constituting the film, and the vessel being filled with soaking liquid which acts so as not to destroy a swelling condition of the film, and a film piece corresponding to one molded product is supplied from the film supply unit to a mold press.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: March 21, 1995
    Assignees: Kabushiki Kaisha Kenwood, Goto Electronic Industrial Co., Ltd.
    Inventor: Yoshio Sakamoto
  • Patent number: 5382150
    Abstract: A method and apparatus of molding articles from composite materials are dlosed in which a stack of prepregs are placed on a first forming surface of a former, which forming surface has a surface configuration matching that of one side of the composite article, placing a semi-rigid molding shelf onto the former such that a second forming surface of the molding shell, which matches the surface configuration of an opposite side of the composite article, bears against the stack of prepregs and urging the molding shell towards the former, thereby compressing the plies of prepregs by drawing a vacuum between an impermeable membrane covering the molding shell and the former. The assembly of the former, the molding shell, the stack of prepregs and the impermeable membrane are placed in an autoclave such that it may be heated while the vacuum is drawn between the membrane and the former to compress the stack of plies of prepregs.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: January 17, 1995
    Assignee: Societe nationale D'Etude et de Construction de Moteurs D'Aviation
    Inventor: Philippe Henrio
  • Patent number: 5326520
    Abstract: A thin ribbon of paint film is guided and applied directly to hot thermoplastics extrudate just as it exits the extrusion die by a film curving and guide plate and then by a film application wheel that is adjusted so that the film mates with and is laminated to the extrudate with an adhesive bond between the paint film substrate and the extrudate. This eliminates the need for high gloss, high metallic content thermoplastics for use as extrudate such as currently used for finished automotive side molding and allows reground thermoplastics to be used as the extrudate and finished with a paint film covering. The thermoplastic extrusion molding is then compression formed in a preform operation to establish end corners with selected radii for corner sharpness as well as reshape the part cross section. This is accomplished with a die and end cap construction which can be relatively adjusted to provide effective gas venting around the end of the die cavity on die closure.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: July 5, 1994
    Assignee: General Motors Corporation
    Inventors: Donald L. Franck, Edward J. Wenzel, Edward Stachowicz
  • Patent number: 5308232
    Abstract: The invention relates to powder metallurgy. The invention involves deforming combustion products by extrusion at an extrusion temperature chose in the range from 0.3T.sub.1 to T.sub.2, wherein T.sub.1 is the melting point of a hard phase of the combustion products and T.sub.2 is the melting point of a binder material in a container (5) made up of vertically extending segments (12) defining spaces (13) with one another and having a die (14) and a heat insulated sizing member (17) the temperature conditions of extrusion being controlled by a unit (21) having a temperature sensor (22) and a member (23) receiving information from the sensor (22) and sending a command for moving the punch (10).
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: May 3, 1994
    Assignee: Institut Strukturnoi Makrokinetiki Akademii Nauk SSSR
    Inventors: Alexandr G. Merzhanov, Alexandr M. Stolin, Vadim V. Podlesov, Leonid M. Buchatsky, Tatyana N. Shiskina
  • Patent number: 5277570
    Abstract: An apparatus and method is disclosed for an improved press for pressing a compressible material such as a deformable plastic material with a fluid under pressure from a fluid pressure source. The press incorporates a press cylinder having a press cylinder bore for removably receiving a sleeve defining a sleeve bore. The sleeve bore is adapted to receive the compressible material between a first and a second forming tool. The fluid from the pressure source is applied to the first and second forming tools to press the compressible material therebetween.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: January 11, 1994
    Inventor: David L. Siggers
  • Patent number: 5275545
    Abstract: A vacuum cast molding apparatus includes a plurality of vacuum chambers which can be brought into communication with each other, a plurality of depressurizing devices to evacuate each of the vacuum chambers respectively, a plurality of mixing and injecting devices installed in each of the vacuum chambers, to mix, agitate and inject molding materials into dies installed in each of the vacuum chambers, and separators installed removably between the vacuum chambers for partitioning each of the vacuum chambers. The vacuum chambers can be used independently when the separators are installed to partition them from each other. The vacuum chambers can also be used as one large vacuum chamber when the separators are removed bringing the chambers into communication with each other.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: January 4, 1994
    Assignee: Kabushiki Kaisha San-Al
    Inventors: Yu Ohyanagi, Michifumi Suzuki