Including Heated Or Cooled Material Supply Hopper Patents (Class 425/551)
  • Patent number: 9662819
    Abstract: An injection device in a molding machine includes: a cylinder having an outlet member formed at a tip-end injection side, a stopper part provided at a rear side, and a pellet supply opening for supplying plastic pellets; a melting device having a plurality of melting holes formed communicating from inflow-side large openings to outflow-side small openings in the longitudinal direction of a device main body, the melting device having a diameter equal to an inner diameter of the cylinder; a heating unit for heating the melting device; and a drive unit for causing the melting device to move in a reciprocating manner.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: May 30, 2017
    Assignee: CENTURY INNOVATION CORPORATION
    Inventor: Hiroaki Kawasaki
  • Publication number: 20150050382
    Abstract: A small sized injection molding machine by which a molded product can be produced with a desired level of precision with simple control. An injection molding machine with: a longitudinal injection cylinder to which stick-shaped molding materials are sequentially supplied in line from the upper side, the lower end of which is formed into a nozzle shape, and the lower side of which is constituted by a material having a good heat retaining property; a heater which heats the lower portion of the injection cylinder; and a pressing shaft which presses the stick-shaped molding materials downward. When the stick shaped-molding material located at the uppermost side is pressed by the pressing shaft, the molding material located at the lowermost side which has already been completely melted, is injected into a cavity, and the heat from the heater is transmitted to the die side through a nozzle touch portion.
    Type: Application
    Filed: October 4, 2011
    Publication date: February 19, 2015
    Applicant: SATOSEIKI CO., LTD.
    Inventor: Toshiomi Sato
  • Publication number: 20140138055
    Abstract: Apparatus and method for recapturing and reusing heat provided in the course of fabricating a molded product.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Inventor: Stephen B. Maguire
  • Publication number: 20140065257
    Abstract: An injection molding apparatus includes a heating device heating reinforcing fiber assemblies, an injection cylinder to which a thermoplastic resin and the reinforcing fiber assemblies are supplied, a first screw compressing and kneading the thermoplastic resin, a second screw fibrillating the reinforcing fiber assemblies and dispersing reinforcing fibers obtained by the fibrillation into the thermoplastic resin, a resin supply portion supplying the thermoplastic resin to a void formed between the injection cylinder and the first screw, and a reinforcing fiber supply portion supplying the reinforcing fiber assemblies to a void formed between the injection cylinder and the second screw. The second screw serves as one of a non-compression screw and a low compression screw including a low compression ratio by which the reinforcing fibers are inhibited from being excessively broken at a time of receiving a shearing force generated by a rotation of the second screw.
    Type: Application
    Filed: September 3, 2013
    Publication date: March 6, 2014
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Shogo IZAWA, Hiroki Hara, Ryohei Higuchi
  • Patent number: 8568132
    Abstract: An output of heater means of a tube shaped heater device is set to melt a compound body P suitable for injecting it into a mold cavity. The conditions of temperature and the viscosity of the compound body P is adjusted in a through aperture suitably for theirs injection molding process. Upon descended a pusher shaft, the molten, compound body P is injected by the shaft into the gate and further into the cavity. After the compound body P reaches there, it solidified and changed to an article S.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: October 29, 2013
    Assignee: Satoseiki Co., Ltd.
    Inventor: Toshiomi Sato
  • Publication number: 20130273193
    Abstract: A melt-delivery assembly (200), comprising: a frame assembly (202) being positioned outside of a platen envelope (153) being defined by a platen assembly (150), the frame assembly (202) being configured to receive a melt from a melt-preparation assembly (110), and the frame assembly (202), including: a multiple-outlet assembly (204) being configured to fluidly deliver the melt to multiple conduits (207) toward the platen envelope (153).
    Type: Application
    Filed: December 8, 2011
    Publication date: October 17, 2013
    Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.
    Inventor: John Robert Galt
  • Publication number: 20130071510
    Abstract: A injection device in molding machine is capable of efficiently heating and melting a plurality of charged pellets in a short period of time, and injecting a melting resin with superior quality. The injection device has a cylinder including a pellet supply port, a plunger, a driving unit, a melting instrument with a plurality of melting holes, which are cone-shaped passages, formed in a cylinder-shaped instrument body to communicate from inflow-side large openings to outflow-side small openings, a nozzle provided on an injection side of the cylinder and a heating unit heating the melting instrument. A diameter of the tip-end of the plunger is set to be the same as a diameter of the outflow side face of the melting machine.
    Type: Application
    Filed: April 20, 2012
    Publication date: March 21, 2013
    Applicant: Century Innovation Corporation
    Inventor: Hiroaki KAWASAKI
  • Patent number: 8329076
    Abstract: In an injection molding machine, dies are connected to a die temperature regulating machine by means of thermal medium supplying pipes and thermal medium returning pipes. A heat exchanger is interposed between the thermal medium returning pipes. The air which has been heated by the heat exchanger is supplied to a hopper through a hot air supplying pipe so as to preheat and dry injection material in the hopper.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: December 11, 2012
    Assignee: The Japan Steel Works, Ltd.
    Inventor: Yuji Kamigauchi
  • Patent number: 8235705
    Abstract: A sulfur-containing material in a melt state is stored in material hopper 1 heated to a temperature within a preset temperature range of which a lower limit is equal to or above a melting point of sulfur. The stored sulfur-containing material is sucked by pressure generators 2a, 2b and pulled out into cylinders 11a, 11b heated to a temperature within the preset temperature range. The pulled out sulfur-containing material is pushed out from the cylinders under predetermined pressure applied by the pressure generator, and thereafter, the resultant material is injected from injection port 24 into mold 5 having therein a cavity which can be hermetically sealed and the mold being heated to a temperature within the preset temperature range. The injection port of the mold after the sulfur-containing material is fully injected in the cavity is closed. By stopping heating of the mold, the sulfur-containing material injected in the cavity is slowly cooled.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: August 7, 2012
    Assignees: Nippon Oil Corporation, Fuji Concrete Industry Co., Ltd.
    Inventors: Minoru Kurakake, Masaaki Chatani, Yoshifumi Tominaga, Yasunori Yamaguchi
  • Publication number: 20120107445
    Abstract: A forming die assembly for microcomponents includes a forming die, a plunger, and a punch. The forming die is formed with a cavity, a storage portion for storing a raw material with a metal powder and a binder having plasticity, and a punch hole that connects the cavity and the storage portion so as to form a gate therebetween. The plunger is formed so as to be slidably inserted into the storage portion and to fill the raw material stored in the storage portion into the cavity through the punch hole. The punch is slidably inserted into the plunger in the sliding direction of the plunger and opens and closes the gate by reciprocatory sliding. The punch closes the gate and compresses the raw material in the cavity into a green compact by sliding in the direction of the cavity.
    Type: Application
    Filed: October 24, 2011
    Publication date: May 3, 2012
    Applicant: HITACHI POWDERED METALS CO., LTD.
    Inventors: Narutoshi MURASUGI, Kazunori MAEKAWA, Zenzo ISHIJIMA
  • Publication number: 20120107444
    Abstract: A forming die assembly for microcomponents includes a forming die, a plunger, and a punch. The forming die is formed with an outer die, an inner die, a storage portion formed at the inner die, and a punch hole formed at the inner die. The inner die slidably inserted into the outer die forms a part of a cavity between the inner die and the outer die. The storage portion stores a raw material with a metal powder and a binder having plasticity. The punch hole connects the cavity and the storage portion and forms a gate therebetween. The plunger slidably inserted into the storage portion fills the raw material stored in the storage portion into the cavity through the punch hole. The punch is slidably inserted into the plunger, and it closes the gate and compresses the raw material in the cavity.
    Type: Application
    Filed: October 24, 2011
    Publication date: May 3, 2012
    Applicant: HITACHI POWDERED METALS CO., LTD.
    Inventors: Narutoshi MURASUGI, Kazunori MAEKAWA, Zenzo ISHIJIMA
  • Publication number: 20110012289
    Abstract: A sulfur-containing material in a melt state is stored in material hopper 1 heated to a temperature within a preset temperature range of which a lower limit is equal to or above a melting point of sulfur. The stored sulfur-containing material is sucked by pressure generators 2a, 2b and pulled out into cylinders 11a, 11b heated to a temperature within the preset temperature range. The pulled out sulfur-containing material is pushed out from the cylinders under predetermined pressure applied by the pressure generator, and thereafter, the resultant material is injected from injection port 24 into mold 5 having therein a cavity which can be hermetically sealed and the mold being heated to a temperature within the preset temperature range. The injection port of the mold after the sulfur-containing material is fully injected in the cavity is closed. By stopping heating of the mold, the sulfur-containing material injected in the cavity is slowly cooled.
    Type: Application
    Filed: September 27, 2010
    Publication date: January 20, 2011
    Applicants: NIPPON OIL CORPORATION, FUJI CONCRETE INDUSTRY CO., LTD.
    Inventors: Minoru Kurakake, Masaaki Chatani, Yoshifumi Tominaga, Yasunori Yamaguchi
  • Publication number: 20100323056
    Abstract: A process for forming a cross-linked thermoplastic polymer is disclosed herein. The cross-linked thermoplastic polymer is formed by heating a first mixture containing a thermoplastic urethane base material, a monomeric diisocyanate comprising between 1 to 10% of the total weight of the first mixture, and a second mixture of a first diamine and a second diamine comprising between 1 to 10% of the total weight of a total reaction product. The heated first mixture, which is flowable, is injected into at least one injection molding device, with the second mixture injected at predetermined intervals to create a homogeneous reaction product.
    Type: Application
    Filed: August 30, 2010
    Publication date: December 23, 2010
    Applicants: CALLAWAY GOLF COMPANY, PRIPRO POLYMERS INC.
    Inventors: PIJUSH K. DEWANJEE, JOHN G. GUARD
  • Publication number: 20100303950
    Abstract: A process for forming a cross-linked thermoplastic polymer is disclosed herein. The cross-linked thermoplastic polymer is formed by heating a first mixture containing a thermoplastic urethane base material, a monomeric diisocyanate comprising between 1 to 10% of the total weight of the first mixture, and a second mixture of a first diamine and a second diamine comprising between 1 to 10% of the total weight of a total reaction product. The heated first mixture, which is flowable, is injected into at least one injection molding device, with the second mixture injected at predetermined intervals to create a homogeneous reaction product.
    Type: Application
    Filed: August 12, 2010
    Publication date: December 2, 2010
    Applicant: CALLAWAY GOLF COMPANY
    Inventors: PIJUSH K. DEWANJEE, JOHN G. GUARD
  • Publication number: 20090230587
    Abstract: A process for forming a cross-linked thermoplastic polymer is disclosed herein. The cross-linked thermoplastic polymer is formed by heating a first mixture containing a thermoplastic urethane base material, a monomeric diisocyanate comprising between 1 to 10% of the total weight of the first mixture, and a second mixture of a first diamine and a second diamine comprising between 1 to 10% of the total weight of a total reaction product. The heated first mixture, which is flowable, is injected into at least one injection molding device, with the second mixture injected at predetermined intervals to create a homogeneous reaction product.
    Type: Application
    Filed: May 26, 2009
    Publication date: September 17, 2009
    Applicants: CALLAWAY GOLF COMPANY, PRIPRO POLYMERS INCORPORATED
    Inventors: PIJUSH K. DEWANJEE, JOHN G. GUARD
  • Publication number: 20090057957
    Abstract: An apparatus for fabrication of a magnesium-based carbon nanotube composite material, the apparatus includes a thixomolding machine, and a feeding device. The thixomolding machine includes a heating barrel, a feeding inlet, a nozzle, a heating portion, and a plunger. The heating barrel includes a first end and a second end. The feeding inlet is disposed at the first end. The nozzle is disposed at the second end. The heating portion is disposed around the heating barrel. The plunger is disposed at a center of the heating barrel. The feeding device includes a hopper; an aspirator connected to the hopper, a first container, and a second container. The hopper is in communication with the first container and the second container. A method for fabricating a magnesium-based carbon nanotube composite material is also provided.
    Type: Application
    Filed: August 21, 2008
    Publication date: March 5, 2009
    Applicants: TSINGHUA UNIVERSITY, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Kam-Shau Chan, Cheng-Shi Chen, Guang-Liang Sheu, Qing-Chun Du, Wen-Zhen Li
  • Publication number: 20040258786
    Abstract: A temperature regulator main body is connected to a cooling hole formed in a temperature regulating part under a hopper through a tube and comprises a tank for a cooling medium, a pump, a radiator, and a fan facing the radiator to send cold air and driven by a motor. By driving of the pump, the cooling medium circulates between the temperature regulating part under the hopper and the temperature regulator main body. A temperature sensor is provided to the temperature regulating part under the hopper. A controller for controlling an injection molding machine cools the circulating cooling medium by the fan and feedback controls the temperature of the temperature regulating part under the hopper when a temperature detected by the temperature sensor is higher than a preset temperature.
    Type: Application
    Filed: June 3, 2004
    Publication date: December 23, 2004
    Applicant: FANUC LTD
    Inventors: Koji Senda, Hideki Koyama
  • Patent number: 6755640
    Abstract: A plastics injection molding machine includes a heatable plasticizing cylinder having an inlet side for incoming plastic material and a machine drive, and an injection mold receiving the plastic material from the plasticizing cylinder for making an injection molded article. Acting between the machine drive and the inlet side of the plasticizing cylinder is a heat transport system for preheating the incoming plastic material with waste heat generated by the machine drive to thereby realize a recovery of energy.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: June 29, 2004
    Assignee: Krauss-Maffei Kunststofftechnik GmbH
    Inventors: Markus Bauer, Martin Wurtele, Erwin Burkle, Helmut Horl
  • Patent number: 6635197
    Abstract: A method and apparatus for casting a molten material using a phase-change material. A funnel means is provided that includes a reservoir containing a phase-change material. The funnel means is used in conjunction with a mold. The phase-change material is heated to a temperature above its melting point. A molten material is poured into the mold, and an excess amount of the molten material is retained in the funnel means after the mold is filled. The latent heat of fusion of the phase-change material provides heat to the funnel means as the phase-change material changes from a liquid to a solid. The heat from the phase-change material maintains the temperature of the molten material within the funnel above its melting point as the molten material within the mold begins to solidify and contract, thereby permitting the excess material within the funnel means to feed into the mold and fill any voids or porosities formed by the contraction of the material within the mold.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: October 21, 2003
    Assignee: American Ordinance LLC
    Inventors: John David Cortum, Michael Jaye Mathiasmeier, Louis William Stoecker
  • Publication number: 20030082265
    Abstract: A plastics injection molding machine includes a heatable plasticizing cylinder, having an inlet side for incoming plastic material and a machine drive, and an injection mold receiving the plastic material from the plasticizing cylinder for making an injection molded article. Acting between the machine drive and the inlet side of the plasticizing cylinder is a heat transport system for preheating the incoming plastic material with waste heat generated by the machine drive to thereby realize a recovery of energy.
    Type: Application
    Filed: October 28, 2002
    Publication date: May 1, 2003
    Applicant: KRAUSS-MAFFEI KUNSTSTOFFTECHNIK GMBH
    Inventors: Markus Bauer, Martin Wurtele, Erwin Burkle, Helmut Horl
  • Patent number: 5447425
    Abstract: An injection molding assembly includes an automatic control unit that activates a machine moving mechanism to move an injection molding machine toward a mold unit and further activates the injection molding machine to inject molten foamable material into a mold cavity of the mold unit until the pressure inside the mold cavity reaches a first predetermined value to indicate that a predetermined amount of the molten foamable material has been fed thereto. The control unit activates the machine moving mechanism to move the injection molding machine away from the mold unit and further activates a mold opening mechanism so as to open the mold unit when the pressure inside the mold cavity reaches a second predetermined value to indicate that foaming of the molten foamable material in the mold cavity has been completed.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: September 5, 1995
    Assignee: Leopardex Industrial Co., Ltd.
    Inventors: Yao-Tung Hsu, Jen-Sheng Ho, Wu-Po Chiang, Woei H. Wu
  • Patent number: 5286187
    Abstract: A machine for molding a starting crystalline saturated polyester resin such as polyethylene terephthalate includes a device for first drying and then preheating the starting resin to a temperature above its melting point to lower the viscosity of the resin to such an extent that the resin is not substantially degraded in the compression section of the molding machine. A feed section is provided for quantitatively feeding the molten starting resin to the main body of the molding machine. Accordingly, the starting resin is molded into a desired shape in a molding machine under conditions such that the crystallization temperature of the resulting molded article is within 20.degree. C. of the crystallization temperature of the starting saturated crystalline polyester resin.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: February 15, 1994
    Assignee: Mitsui Petrochemical Co., Ltd.
    Inventors: Hiroji Niimi, Takashi Satake, Kunio Tomita
  • Patent number: 5205969
    Abstract: A process for distributing wax or a similar substance in semi-solid form which uses a liquid wax supply system, a wax conditioning system including a heat exchanger which cools the wax to a semi-solid state and an accumulator for storing conditioned wax until needed, and a die press or similar work station which receives semi-solid wax from the accumulator in a continuous stream or flow. Such a system allows a lost wax die press to operate without need to manually open and reload the press with wax. An automated control system according to the invention allows die press reloading to occur automatically when needed, and operates the wax conditioning system as needed to maintain a supply of wax in the accumulator. Wax tunnelling problems are avoided by means of a piston disposed in the heat exchanger which is movably interposed between hot liquid wax entering the heat exchanger and cooler, semi-solid wax leaving the heat exchanger.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: April 27, 1993
    Assignee: Signicast Corporation
    Inventors: John A. Nett, Jr., Walter C. Schmitt, Jr., Walter S. Lutz, Jr., James A. Capadona
  • Patent number: 5142126
    Abstract: A compact injection molding melt distribution manifold. The manifold has integral or monolithic inlet and main portions and both portions have a common electrical heating element. A melt passage extends through the manifold from a common inlet in the inlet portion and branches in the main portion to a number of spaced outlets leading to different gates.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: August 25, 1992
    Assignee: Mold-Masters Limited
    Inventor: Alex C. Teng
  • Patent number: 4975038
    Abstract: A device for the injection of a plastic material in a mold having an injection head with an injection face designed to be placed in contact with the mold feeder channel. The injection head has an injection chamber supplied with plastic material by a feeder conduit. The plastic material is injected from the injection chamber to the mold feeder channel by means of a clack-valve system. The device also has a support for the injection head and an injection rod.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: December 4, 1990
    Assignee: Compagnie Europeenne de Composants Electroniques
    Inventor: Francois Delalande
  • Patent number: 4834545
    Abstract: A mixing apparatus for mixing two or more liquids, e.g. as required in reactive injection molding, has a rotary member mounted for rotational and axial movement within a cylindrical bore of a mixing head, with a convex conical surface of the rotary member disposed opposite a concave conical surface formed at a lower end of the bore. Mixing is performed by axially displacing the rotary member to form a mixing gap between the conical surfaces, injecting two or more liquids into the gap from the periphery thereof, and rotating the rotary member at high speed to mix the liquids, the mixture being ejected from a central aperture formed in the concave conical surface. On completion of the mixing operation, residual mixture is ejected by moving the conical surfaces into close contact.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: May 30, 1989
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takao Inoue, Kenichiro Suetsugu
  • Patent number: 4695240
    Abstract: A mini-extruder apparatus for extruding small quantities of material. The apparatus is designed to overcome the problems of excessive heat transfer from the heated portion of the barrel to the feed portion of the extruder barrel and the premature failure of the long thin extruder screws employed in extruders. The mini-extruder includes an extruder barrel having a substantially circumferential, radially extending cavity formed in an isolator portion of the extruder barrel to thermally isolate the feed portion from the heated portion. The mini-extruder also includes a drive system constructed to drive the extruder screw at both ends. The mini-extruder can also be designed as a co-rotating or counter-rotating twin screw extruder where each end of each extruder screw is driven.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: September 22, 1987
    Assignee: Allied Corporation
    Inventors: Hsin L. Li, Dusan C. Prevorsek
  • Patent number: 4591475
    Abstract: A method of producing capsules of a moldable hydrophilic polymer composition, preferably gelatin, using a combination of an injection molding device with a microprocessor to precisely control the conditions of time, temperature, pressure and water content of the hydrophilic polymer composition, in a cyclic molding process.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: May 27, 1986
    Assignee: Warner-Lambert Company
    Inventors: Ivan Tomka, Fritz Wittwer
  • Patent number: 4573897
    Abstract: A system is disclosed for extruding, drawing, vacuum molding or processing, or the like hot processing of plastomers or elastomers, which can conveniently utilize the hot air from the cooling process of its heated component parts. The system makes use, to heat the extruder cylinder, of ventilated electric thermal units wherein ventilation is performed in closed circuit fashion. In particular, arrangements are made to convey the hot air from the cited electric thermal units, through specially provided ducting, to areas of the system where application of heat is required.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: March 4, 1986
    Inventor: Gaetano Piazzola
  • Patent number: 4438325
    Abstract: This invention relates to a spacer clip for an injection molding electric heating element. A number of clips, each formed of a continuous band, are slipped over one end of the heating element and slid along to predetermined positions. Each clip is then crimped to the heating element in that position which forms a finger which extends radially from the heating element in a predetermined orientation. The heating element with the spacer clips attached is located in a suitable mold for casting and the fingers of the clips locate each coil of the element with sufficient clearance from the mold and the other coils. The thickness of the conductive heater cast around the heating element is important to provide uniform heat transfer. The spacer clips are formed of a material such as stainless steel which has sufficient pliability to be securely crimped to the heating element, but sufficient strength to reliably retain the heating element in position.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: March 20, 1984
    Inventor: Jobst U. Gellert
  • Patent number: 4416603
    Abstract: A ceramic molding machine is used for hot molding ceramic parts under low pressures for small part production molding and includes a heated tank that is generally conical in shape and has an internal mixer that is driven from the exterior of the tank through a slip clutch arrangement to avoid overloading of the drive motor. The conical tank insures that the ceramic slurry will flow toward the bottom outlet from the tank and also permit use of small amounts of slurry for small runs of parts if the material is expensive. The mixer blade or paddle is driven from the bottom and removable from the top and thus the tank can easily be serviced. Additionally, air pressure is utilized for holding the molds in position over the feeder pipe and also for transferring the slurry to the mold in a timed sequence that can be controlled to provide the desired time for filling of the mold.
    Type: Grant
    Filed: October 7, 1981
    Date of Patent: November 22, 1983
    Inventors: Michael I. Peltsman, Israel D. Peltsman
  • Patent number: 4257840
    Abstract: Two parallel guide rails are arranged to put therebetween a stationary die of the hot-press machine and a table for sliding therealong respective movers by which a facing layer is carried from a first position to cover the table to a second position to cover the stationary die. First clamping means is disposed on the movers to clamp longitudinally opposed ends of the facing layer, and second clamping means is connected to the stationary die to clamp laterally opposed ends of the facing layer when the facing layer which has been kept clamped by the first clamping means is brought to the second position by means of the movers.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: March 24, 1981
    Assignee: Nissan Motor Company, Limited
    Inventor: Toshihiko Fujii
  • Patent number: 4204827
    Abstract: An injection molding machine for thermoplastic and thermosetting materials is provided with air pressure as the sole means other than gravity for moving particulate or powder form of the plastic through the heat cylinder of the machine whereby the plastic power is converted to a viscous molten liquid that is forced through the nozzle of the machine into an orifice of a mold where, after setting, a plastic article can be removed.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: May 27, 1980
    Inventor: Ralph H. Romans
  • Patent number: 4199343
    Abstract: This invention relates to a process for injection molding hydrosilicate glasses and apparati useful therefor. This invention is also concerned with apparati for mixing hydrosilicate glasses while in the fluid stage, i.e., when the hydrosilicate glasses have a viscosity between about 10.sup.2 -10.sup.9 poises. Finally, this invention describes materials demonstrating ready release of hydrosilicate glasses after contact in fluid form.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: April 22, 1980
    Assignee: Corning Glass Works
    Inventors: Robert W. Eolin, Gordon F. Foster, Joseph F. Mach, Richard O. Maschmeyer
  • Patent number: 4154287
    Abstract: The present invention relates to equipment used for investment casting and may find application in various fields of engineering to enable automation of the process of manufacturing easily fusible patterns.The proposed apparatus comprises a pressure casting die formed of two parts, one of which is mounted for reciprocated movement in the horizontal, an injection means formed of a heated body with a chamber to receive a pattern material, an air cylinder with a hollow piston and a hollow rod, a means for evacuating the chamber and the pressure casting die cavity after introducing a pattern material therein, and a means for supplying a fluid to the pressure casting die upon evacuation of the latter, said fluid supply means comprising a moving element fitted with a channel adapted to intermittently communicate a fluid source with the pressure casting die cavity.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: May 15, 1979
    Assignee: Rostovsky-na-Donu-Nauchno-Issledovatelsky Institut Tekhnologii Mashinostroenia
    Inventors: Yakov A. Kharagezov, Viktor A. Junichenko, Vitaly S. Poluboyarov, Jury L. Perevozkin, Jury A. Gajun, Anatoly A. Mkrtychian, Stalina P. Kotenko
  • Patent number: 4144012
    Abstract: Relates to plastic material molding machines and to a unitary assembly of parts installable between the hopper and the plastic pellet material inlet opening of the molding machine for providing bodily translatable movement of the hopper to one side of the machine where the remaining contents of the hopper may be discharged into a drainage collector for possible re-use at a later time. The translatable movement of the hopper is usually performed when the hopper content is to be changed and is carried out by moving or sliding the hopper while in upright position along a track extending laterally of the machine. The track occupies the upper position of a gas-tight conduit, preferably rectangular in cross section, which serves to deliver a gaseous medium to the contents of the hopper, such as hot dry air for the purpose of removing moisture from the plastic pellets in the hopper.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: March 13, 1979
    Inventor: Paul D. Pinkley
  • Patent number: 4080147
    Abstract: The invention pertains to a device for the fabrication of hollow plastic bodies, of the type comprising a core carrying plate, a double mould plate, means to inject plastic material into said mould plate and means to press said three plates against each other at the proper time, characterized in that it further comprises a metering plate fixed to one of said mould plates, as well as a hydraulic metering control plate facing said metering plate, said metering plate and hydraulic control plate being so conditioned to introduce, in a first step, a metered quantity of material in said metering plate and to transfer, in a second step, this quantity of material from the metering plate into the mould carrying plate, before the force-dieing resulting from pressing said plates together.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: March 21, 1978
    Assignee: Fabrique Nationale Herstal S.A., en abrege FN
    Inventor: Thierry M. Dumortier
  • Patent number: RE30225
    Abstract: Method and apparatus are disclosed for cyclically metering charges of a granulated wax-like or resinous material from a bulk supply and feeding such metered charges into a heated, pressurized reservoir. Each charge of the granulated material is fluidized with a stream of air under pressure to insure flow of the granules. The stream of air also serves to pressurize the reservoir and prevent the escape of hot air therefrom. Cooling of the reservoir inlet to prevent agglutination of the granules also is contemplated.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: March 11, 1980
    Assignee: Precision Metalsmiths, Inc.
    Inventors: John H. Simmons, Donald A. Daugherty