Utilizing Positive Charging Means Patents (Class 425/449)
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Patent number: 6045345Abstract: An installation for producing a three-dimensional shaped plastic foam part, comprises a plurality of tanks respectively receiving plastic foam granules and a liquid primary material, a device for reducing the plastic foam granules to a predetermined size, conduits connecting the reducing device to respective tanks receiving the plastic foam granules, a weighing tank having an inlet arranged to receive the plastic foam granules from the reducing device and an outlet, a device for mixing the plastic foam granules with the liquid primary material, further conduits connecting the mixing device to respective tanks receiving the liquid primary material and to the outlet of the reducing device, an intermediate storage tank comprising a weighing device and arranged to receive the plastic foam granules mixed with the liquid primary material, a mold having a mold cavity, and a supply line connecting the intermediate storage tank to the mold cavity, the supply line comprising a conveying device having an inlet and a conType: GrantFiled: December 9, 1998Date of Patent: April 4, 2000Assignee: C.A. Greiner & Sohne Gesellschaft m.b.H.Inventors: Bernhard Eder, Franz Reitinger, Hans-Michael Sulzbach, Horst Klahre
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Patent number: 6042754Abstract: The present invention relates to making optical articles such as opthalmic lenses by molding and, in particular, to using a continuous extrusion-compression molding method to make plastic lenses whereby a polymer melt is fed from an extruder or melting apparatus to a first die of a plurality of rotating or conveyed sequentially processed compression die sets comprising a first die and a second die. The die sets are positioned on die supports on a rotating turntable or conveying system, the lenses formed by compressing the die sets with pressing means associated with each die support, the lenses separated from the dies and the dies recycled to die loading and the melt feed step of the process and the process repeated until the desired number of lenses or other optical articles such as compact disk substrates are produced.Type: GrantFiled: October 30, 1998Date of Patent: March 28, 2000Assignee: Optima, Inc.Inventors: Zhou Yang, Yinghui Wu
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Patent number: 6027326Abstract: In a rapid prototyping system, a part is formed by depositing a bead of slurry that has a sufficient high concentration of particles to be pseudoplastic and almost no organic binders. After deposition the bead is heated to drive off sufficient liquid to cause the bead to become dilatant.Type: GrantFiled: October 28, 1997Date of Patent: February 22, 2000Assignee: Sandia CorporationInventors: Joseph Cesarano, III, Paul D. Calvert
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Patent number: 5993188Abstract: An extruder for paste-like food substances including a barrel provided at one end with an outlet from which the paste-like food substance can be extruded in either measured amounts or in a steady flow, a rotatable screw is located within the barrel and is capable of being rotated and moved vertically within the barrel, a clutch located within a housing is capable of engaging the screw to ensure measured amounts of paste-like food are extruded or capable of being disengaged from the screw to permit the screw to be freely rotated and moved vertically within the barrel to permit the paste-like food substance to be extruded from the outlet in a steady flow.Type: GrantFiled: November 19, 1997Date of Patent: November 30, 1999Inventor: King Biu Mak
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Patent number: 5993627Abstract: The present invention provides an integrated, fully automated, high-throughput system for two-dimensional electrophoresis comprised of gel-making machines, gel processing machines, gel compositions and geometries, gel handling systems, sample preparation systems, software and methods. The system is capable of continuous operation at high-throughput to allow construction of large quantitative data sets.Type: GrantFiled: June 24, 1997Date of Patent: November 30, 1999Assignee: Large Scale Biology CorporationInventors: N. Leigh Anderson, Norman G. Anderson, Jack Goodman
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Patent number: 5980228Abstract: A food patty molding machine of the type utilizing a linearly reciprocable mold plate utilizes a direct rotary actuator drive which provides virtually direct linear transfer of the drive force to the ends of the linear drive shafts which support the mold plate. This results in the virtual elimination of high wear lateral loads. An encoder is directly linked to the rotary actuator drive shaft to provide accurate mold plate position signals which are utilized to control the operation of completely independently driven knock-out devices and to control operation of the feed ram during the feed stroke. Servo valve control of the hydraulic power unit which drives the rotary actuator and the feed ram cylinders also responds to suitably processed encoder signals to provide a wide range of speed and position control.Type: GrantFiled: March 24, 1998Date of Patent: November 9, 1999Assignee: Progressive Technology of Wisconsin, Inc.Inventor: James L. Soper
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Patent number: 5945135Abstract: A pressurized feed shoe for delivering particulate materials to fill a die cavity is provided. The feed shoe includes a feed shoe body comprising a vessel for receiving a quantity of particulate material. The feed shoe body has at least one bottom egress opening for registering with the die cavity and a top ingress opening for receiving particulate material. A pressure generator for generating supra-atmospheric pressures within the vessel and the die cavity is also provided. The pressure generator communicates with the vessel via a conduit sealingly engaged thereto. A shuttle selectively moves the feed shoe body to and from a position whereby the bottom egress opening registers with the die cavity.Type: GrantFiled: October 17, 1997Date of Patent: August 31, 1999Assignee: Materials Innovation, Inc.Inventors: Glenn L. Beane, David S. Lashmore
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Patent number: 5916494Abstract: A rotational indexing base curve deposition array for assembling contact lens base curves and front curves with a prescribed and programmable angular orientation to produce a contact lens having a selected axis placement therein, such as a toric axis for a toric contact lens. An array of front curve molds are arranged in a support pallet with a dosed amount of monomer mixture deposited into each of the front curve molds. An array of deposition tubes, positioned in a support plate and coupled to a vacuum source, is used to pick up and support an array of base curve molds. Each of the deposition tubes is then angularly rotated in to the support plate to a selected angularly indexed position therein. A common angular rotational drive is coupled to each of the deposition tubes in the array to angular index each of the deposition tubes to a precise angular position in the support plate.Type: GrantFiled: December 29, 1995Date of Patent: June 29, 1999Assignee: Johnson & Johnson Vision Products, Inc.Inventors: Michael F. Widman, Henri A. Dagobert, Edmund C. Rastrelli
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Patent number: 5895668Abstract: A dough divider is operable within a mixer bowl to divide the dough into preset weights (e.g., for bread, loaves, buns). A pendulum assembly has a retractable divider to cut a charge of dough, which is compressed by a piston. The charge of dough is expelled into a scaling die cylinder and causes a scaling die piston to be retracted until a preset weight of dough is in the scaling die cylinder. As the divider moves out of alignment with the scaling die cylinder, any excess dough is cut off and the preset weight of dough is then expelled by the scaling die piston.Type: GrantFiled: October 17, 1997Date of Patent: April 20, 1999Assignee: Willett Versatile Equipment Pty. Ltd.Inventor: Paul Eaton Willett
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Patent number: 5891489Abstract: The fish bait molder is a two element mold in which one mold element is inserted into the other in a manner that the fish bait molder may be opened and closed. Each mold element has a portion of a mold cavity such that when the two mold elements are closed together a mold cavity is formed. An access port is contained in one of the two mold elements to allow insertion of a fish hook and removal of a baited fish hook. A slot is provided to allow a fish line to protrude out of the fish bait molder. There is a bait holder with a bait cavity attached to one of the mold elements. The bait cavity is filled with fish bait and a piston slides in the bait cavity to force the fish bait through an inlet passage into the mold cavity and around the fish hook. The piston can be operated by rotating the bait holder into a fish bait container having a threaded lid or rotating a rotational injector with a piston attached into the bait cavity. A ratchet mechanism may also be used to force the piston into the bait cavity.Type: GrantFiled: November 13, 1996Date of Patent: April 6, 1999Inventor: Kirk Rockwell
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Patent number: 5885625Abstract: A pressurized feed shoe for delivering particulate materials to fill a die cavity is provided. The feed shoe includes a feed shoe body including a vessel for receiving a quantity of particulate material. The feed shoe body has at least one bottom egress opening for registering with the die cavity and a top ingress opening for receiving particulate material. A pressure generator for generating supra-atmospheric pressures within the vessel and the die cavity is also provided. The pressure generator communicates with the vessel via a conduit sealingly engaged thereto. A shuttle selectively moves the feed shoe body to and from a position whereby the bottom egress opening registers with the die cavity.Type: GrantFiled: August 29, 1996Date of Patent: March 23, 1999Assignee: Materials Innovation, Inc.Inventors: Glenn L. Beane, David S. Lashmore
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Patent number: 5866176Abstract: 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: GrantFiled: May 2, 1997Date of Patent: February 2, 1999Assignee: Koppens B.V.Inventors: johannes Antonius Barbara Maria Baars, Jacobus Johannes Maria Van Der Laak, Johannes Gertrudes Simon Driessen
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Patent number: 5855927Abstract: An extruder for the plastification and extrusion of a rubber mixture in the form of two cold material strips through two inlet passages (4, 5) has in a housing (1) two gears (2, 3) meshing with one another in the manner of a gear pump. The inlet passages (4, 5) are provided each in an insert (8, 9) which is held replaceably in the housing (1). In this manner it becomes possible, by exchanging the inserts (8, 9) to adapt to various materials to be worked by the extruder.Type: GrantFiled: September 26, 1997Date of Patent: January 5, 1999Assignee: Uth GmbHInventors: Peter Joachim Uth, Thomas Menz
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Patent number: 5853654Abstract: A process and apparatus for making a ceramic article, especially pipes and tubes of ceramic material such as silicon carbide, in which the article is formed by projecting a ceramic powder mixture comprising refractory particles and combustible particles against a smooth-surface metal former which is heated to a temperature of at least 850.degree. C. where in the presence of an oxygen-rich gas the combustible particles react exothermically to produce from the refractory particles and the reaction product of the combustible particles a coherent refractory article in the shape of the former.Type: GrantFiled: May 27, 1997Date of Patent: December 29, 1998Assignee: GlaverbelInventors: Jean-Pierre Meynckens, Jean-Pierre Robert
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Patent number: 5798128Abstract: This plant for manufacturing fiber-reinforced thermoplastic structural components, especially for motor vehicles, is characterized in that it includes:means (1) of continuous production of a dough of a fiber-reinforced thermoplastic compound, receiving as input, on the one hand, the thermoplastic (4) and, on the other hand, the reinforcing fibers (6);means (14) of accumulation and of temporary storage of the dough produced; andmeans (26) of removing the dough from the accumulation and temporary-storage means (14) and of introducing this removed dough into a mould (29) for forming the component.Type: GrantFiled: November 15, 1996Date of Patent: August 25, 1998Assignee: ECIA--Equipements Et Composants Pour L'Industrie AutomobileInventors: Philippe Dumazet, Daniel Ougier, Gerard Gropelier
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Patent number: 5792484Abstract: An automated feeder for concrete pipe making machines used to produce concrete pipes that have round as well as box-shaped, elliptical and other non-round shapes. The feeder has a concrete storage hopper mounted over a fixed pivot, and the hopper charges the concrete onto a belt-type conveyor the input end of which turns on the same pivot as the hopper for movement along a radial track. The discharge end of the feeder conveyor discharges the concrete into a rotatable chute that distributes the concrete into the cavity of the pipe mold. Encoders are combined with the motors driving the chute and the radial movement of the feeder conveyor so as to monitor the position and speed of the radial movement of the conveyor and position and speed of rotation of the chute. Information from the encoders is inputted into a computer which is programmed to control the speed and position of these components of the feeder depending upon the selected size and shape of the concrete form to be filled.Type: GrantFiled: February 19, 1997Date of Patent: August 11, 1998Assignee: Hawkeye Concrete Products Co.Inventor: Ronald D. Schmidgall
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Patent number: 5783225Abstract: An apparatus for plasticizing thermoplastic synthetic plastics material includes a screw (13) which rotates within a housing (12) and plasticizes the synthetic plastics material which is supplied by a supply mechanism (27) through an intake opening (10) of the housing (12) of the screw (13). The housing (12) of the screw (13) is provided on its inner wall with at least two wide pockets (23,24). These pockets (23,24) extend in longitudinal direction of the screw (13) and are separated from each other by ribs (25,26) which are narrow, when compared with the width of the pockets. One pocket (24) is open towards the intake opening (10), the other pockets (23) are closed by at least one rib (25,26) of the housing (12) of the screw (13) with respect to the intake opening (10). In order to improve filling of the screw (13), the supply mechanism (27) for the synthetic plastics material to be treated cooperates with the screw (13).Type: GrantFiled: October 16, 1997Date of Patent: July 21, 1998Inventors: Helmut Bacher, Helmuth Schulz, Georg Wendelin
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Patent number: 5782460Abstract: In a process for the manufacture of mouldings, especially optical lenses, specifically contact lenses (CL), a starting material that is crosslinkable by the impingement of suitable energy is introduced into a mould (1) having a cavity (15), which mould is at least partially permeable to the energy concerned. The starting material is introduced into the cavity in a still at least partially uncrosslinked state, the mould cavity determining the shape of the moulding (CL) to be produced. By means of impingement of the energy concerned, the starting material is crosslinked to an extent sufficient for it to be possible for the moulding (CL) to be released from the mould. The filling of the mould cavity is carried out in the starting material that is still at least partially in the uncrosslinked state.Type: GrantFiled: August 13, 1996Date of Patent: July 21, 1998Assignee: CIBA Vision CorporationInventors: Otto Kretzschmar, Sharla Borghorst, John Golby, Peter Hagmann, Peter Herbrechtsmeier, Bernhard Seiferling, Beat Muller
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Patent number: 5660635Abstract: A nozzle for application of fluent material to a receiving surface. The nozzle allows for introduction of compressed air at locations along the length of the nozzle via multiple sets of plural air conduits. Individual conduits are angled toward a nozzle outlet. Further disclosed is the nozzle in an automated finish material delivery system capable of multi-dimensional translation along the receiving surface. The System nozzle can also be angled With respect to the receiving surface. A controller manages the operation of the delivery system. A tracked vehicle carries the controller, an air compressor, a pump, a generator, and a hoist. A number of sensors provide feedback regarding the operating condition of the system.Type: GrantFiled: August 9, 1995Date of Patent: August 26, 1997Inventor: Carol Jacques
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Patent number: 5599563Abstract: A loudspeaker cone assembly having a generally conical cone body and an annular flexible suspension rim. In making the cone assembly, a cone body having an outer free edge is placed within a female mold having an annular channel configured to form the suspension rim with the free outer edge of the cone exposed to the channel. A predetermined quantity of liquid plastic foam is deposited into the channel which is then substantially closed by a male die so as to seal off the cone body adjacent its outer free edge. The foam is then expanded and cured so that the resulting annular rim is integrally impregnated into the free outer edge of the cone body and forms high density closed-cell outer skin surfaces on opposite sides of a low density closed-cell inner core to provide a suspension rim having improved flexibility, strength and durability. A color coating may be applied to selective exposed surface areas of the suspension rim.Type: GrantFiled: May 24, 1994Date of Patent: February 4, 1997Inventor: Fred D. Yocum
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Patent number: 5585122Abstract: A recycling apparatus in which high density polyethylene, thermal polyolfin, or coated or non-coated oriented polypropylene and rubber are mixed into a batch and converted to useful molded products. The apparatus includes a first mixer, a second mixer, a conveyor belt system, a deflector sheet, a first ram, a second ram, a conduit system, and a mold. The first and second mixers alternately provide a batch to the conveyor belt system. The conveyor belt system alternately transports the batches to a first and second ram. Each ram having an opening, an outlet, and a ram piston. A deflector sheet or flip plate permits a first batch on the conveyor belt to be deposited into the opening of the first ram in a first position and alternately permits a second batch on the conveyor belt to be deposited into the opening of the second ram in a second position.Type: GrantFiled: December 23, 1994Date of Patent: December 17, 1996Assignee: Reconversion Technologies, Inc.Inventors: Kenneth H. Drum, David Lewer, Vernon Havemann
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Patent number: 5573788Abstract: An improved dough divider is provided which has a measuring cup assembly for dividing a mass of dough into uniform smaller slugs. The apparatus is adjustable so that size of the dough slugs can be increased or decreased. The dough divider has a piston-cylinder arrangement for supplying a flow of dough. The measuring cup assembly has a cylindrical housing which has a central axis. A plunger aligned on the axis so that it can reciprocate axially within the housing. An elongated stud is threaded through the housing so that the stud is aligned axially with a stem of the plunger. The plunger slides in said housing when dough is pressed against the plunger face, such that the plunger stem can contact the stud to limit the sliding of the plunger.Type: GrantFiled: May 25, 1995Date of Patent: November 12, 1996Assignee: AM Manufacturing Company, Inc.Inventor: Thomas A. Atwood
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Patent number: 5567446Abstract: A slip supply system for supplying slip to one or more casting molds includes a slip supply pipe 2 to which the base ends of pouring hoses 3 each having a pouring valve 4 are connected. The ends of the pouring hoses 3 are detachably connected to casting molds 1. A slip discharge pipe 20 having communicating holes 22 is laid in the vicinity of the slip supply pipe 2. The ends of the pouring hoses 3 are removed from the casting molds 1 and connected to the communicating ports 22 before supplying slip to the casting molds 1. Slip is fed in this condition, so that the solid matters attached to the interior of the slip supply pipe 2 and the interiors of the pouring hoses 3 are washed away to the slip discharge pipe 20. Thereafter, the ends of the pouring hoses 3 are connected to the casting molds 1 to feed slip to the casting molds 1.Type: GrantFiled: June 1, 1995Date of Patent: October 22, 1996Assignee: Toto Ltd.Inventors: Takeo Enomoto, Toshiya Abe, Hironobu Murakami, Shinichi Hiraki
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Patent number: 5547357Abstract: An apparatus for hot-briquetting iron sponge includes a gravity feeder which has a feed shaft and a regulating tongue which supplies material in a dosed quantity to a moulding gap of a roller press, in such a way that the apparatus can also be used for pressing hot iron sponge at temperatures of up to 1000.degree. C. for obtaining high-density briquettes of good quality. The regulating tongue is provided with a heat-reducing insulating layer and cooling system. The feed shaft and a feed hopper also may have a heat-insulation layer and a cooling system. A flow-rate control is provided for gravity feeders where bulk material or flowable material is supplied by at least one regulator through a feed shaft to a moulding gap formed between at least two rolls and is processed by the rolls. At least one of the rolls is motor-driven. The material is supplied to the moulding gap by the regulating tongue in response to a driven roll torque sensed by a torque detector.Type: GrantFiled: May 20, 1994Date of Patent: August 20, 1996Assignee: Maschinenfabrik Koppern GmbH & Co. KGInventor: Hans-Georg Bergendahl
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Patent number: 5529471Abstract: An additive fabrication apparatus using a fluid construction material which can be solidified, and including a fluid material extrusion assembly including trowels defining first and second surfaces, a first nozzle for delivering fluid material to a predetermined location, a first control for moving the extrusion assembly along a predetermined path defining an enclosed area, a first supply for delivering fluid material to the extrusion assembly to extrude the material from the first nozzle in a layer as the first nozzle is moved along the path, with the first and second surfaces moving with the first nozzle to produce a wall of the extruded material forming the enclosed area with a shaped outer surface and a shaped top surface, a second nozzle for delivering fluid material to the enclosed area, a second control for moving the second nozzle to position the second nozzle at the enclosed area, and a second supply for delivering fluid material to the second nozzle to fill in the enclosed area.Type: GrantFiled: February 3, 1995Date of Patent: June 25, 1996Assignee: University of Southern CaliforniaInventor: Behrokh Khoshevis
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Patent number: 5505604Abstract: A rotary plastic molding apparatus having internal packing space is featured. A nozzle is divided into channels equal to the number of casting device disks. Grooves are disposed in casting disks for supplying the melt. The grooves are displaced relative to each other and slots are provided between them to introduce packing lintels. The mold is divided into sections. In each section, an accumulator and sockets for molding articles are provided. The components communicate among themselves and can be oriented at definite angles. The accumulator is disposed before the molds. Holes are provided to supply the melt from the accumulator to the molds. Certain holes can be closed to get a certain article drawing. The transition section of the accumulator is divided into sections for uniform division of the melt. The number of sections is equal to the number of sockets.Type: GrantFiled: July 29, 1994Date of Patent: April 9, 1996Inventor: Iosif N. Khibnik
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Patent number: 5435951Abstract: A process for producing a slab of stony material by filling of a mold (42) with a mixture of stony material for the realization of a slab of the material, supplying the mixture with a volumetric distributor with rotating blades (92) and moving the volumetric distributor from a first end to the other end of the mold (42) and then returning the distributor to the first end with the blades (92) in a swinging motion or angle widening motion, and stopping the distributor for a prefixed period of time at each end, during which time the blades (92) are given a limited rotation in the direction of the stopped end.Type: GrantFiled: March 11, 1994Date of Patent: July 25, 1995Inventor: Luca Toncelli
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Patent number: 5378133Abstract: A device for feeding dough is provided which has a hopper for receiving dough and directing the dough downwardly to a housing which contains a first rotatable member for engaging and urging the dough downwardly toward a pair of opposed second rotatable members. The second rotatable members have a gap therebetween to receive the dough therethrough and they rotate in opposite directions to urge the dough downwardly therebetween. Both the first and second rotatable members have a surface configuration which enhances engagement between the rollers and the dough. An orifice is provided in the housing below the second rotatable members for receiving the dough from the second rotatable rollers. The dough thus leaves the housing in the form of a continuous cylinder having a diameter of the same size as the orifice.Type: GrantFiled: September 13, 1993Date of Patent: January 3, 1995Assignee: AM Manufacturing CompanyInventors: Harold Atwood, Thomas A. Atwood
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Patent number: 5368459Abstract: The present invention pertains to a device for preparing and feeding a monolithic ceramic mass into a metallurgical melting vessel, including a mixer 30 and a feeding device 32, characterized in that the mixer 30 and the feeding device 32 are designed as a compact unit 28 for arrangement above the metallurgical vessel, wherein the mixer 30 and/or the feeding device 32 are arranged relative to one another and movably such that the mass prepared in the mixer 30 can be directly introduced at any desired point of the metallurgical vessel via the feeding device 32.Type: GrantFiled: March 1, 1993Date of Patent: November 29, 1994Assignee: Veitscher Magnesitwerke-Actien-GesellschaftInventors: Alexander Retschnig, Manfred Slamenik
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Patent number: 5362427Abstract: Apparatus and method for supporting at least a portion of an article while the article is being formed. A source of self-adhering particles is directed by a particle jetting device, or the like, to a predetermined position in a controlled environment to form the article. A support structure is carried in the controlled environment for substantially rigidly supporting at least a portion of the article during the formation of the article (by build-up of the self-adhering particles). The support structure is a fluid which changes state to a solid responsive to an electrical charge and reverts back to a fluid responsive to removal of the electrical charge.Type: GrantFiled: May 10, 1993Date of Patent: November 8, 1994Inventor: Porter H. Mitchell, Jr.
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Patent number: 5356280Abstract: A rotary channel pump apparatus for compressing solids that have an initial bulk density which is substantially lower than their structural density; the apparatus comprises a flow channel having an inlet and an outlet and includes: (i) an annular drag flow channel segment (L1) formed between a stationary outer wall member and a rotating circular inner wall member; and (ii) a straight channel segment (L2) formed between a first planar and stationary wall portion and a second planar and stationary wall portion; no axial cross-section of the flow channel between the inlet and the outlet is smaller than the axial cross-section at the inlet; a rotary feeder is connected to the flow channel near the inlet thereof for precompacting the particulate solid which is then passed through the flow channel to substantially increase the bulk density and to avoid melting and/or thermal degradation of the particulate solid when passing through the flow channel.Type: GrantFiled: November 24, 1992Date of Patent: October 18, 1994Assignee: GPW Machine S.a.S. di Giuseppe Ponzielli & C.Inventor: Giuseppe Ponzielli
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Patent number: 5354526Abstract: To eliminate the fluctuations in the precision of the material distribution which could not be avoided when manufacturing pipes in the centrifugal moulding process with the prior art installations, a new process and an installation for carrying out the process is proposed. This has at least two cylindrical centrifugal drums (1) serving as moulds and an injection carriage (12) which is displaceable in two directions perpendicular to each other, with a feed arm (11).Type: GrantFiled: June 10, 1993Date of Patent: October 11, 1994Assignee: Hobas Engineering AGInventors: Ralf Jost, Reinhart Ratheiser
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Patent number: 5350230Abstract: A batch mixer includes a mixing chamber in which polymeric material such as plastics and rubber is heated and mixed. The material is fed to the mixing chamber through a hopper. The hopper has a door which is swung open and closed by a fluid-actuated cylinder. A locking mechanism is provided to enable the door to be swung only slightly open by excessive pressure build-ups in order to vent the pressure without permitting an appreciable amount of molten material to escape through the door.Type: GrantFiled: September 29, 1993Date of Patent: September 27, 1994Assignee: O'Sullivan CorporationInventor: Timothy L. Ray
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Patent number: 5338179Abstract: An apparatus for carrying out the filling of a mold (42) with a mixture of stony material to produce a slab formed of the stony material. A volumetric distributor having rotating blades (92) for supplying the mixture is moved forward from one end to the other of the mold (42) and is then returned to the one end with the blades (92) in a swinging motion. The distributor is stopped for a prefixed period of time at each end, during which the blades (92) are given a limited rotation in the direction of the interested end. A series of fixed rods (54) is provided above the mold (42) extending transversely in the sense of forward motion of the distributor.Type: GrantFiled: May 18, 1992Date of Patent: August 16, 1994Inventor: Toncelli Luca
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Patent number: 5284431Abstract: A filling apparatus for filling foamed particles of a thermoplastic resin into a mold. The apparatus includes a weigh hopper equipped with a weighing means, a foamed particle feeder adapted to control the amount of the foamed particles of the thermoplastic resin to be fed to the weigh hopper according to the weight of the foamed particles contained in the weigh hopper, a particle feed hopper adapted to temporarily keep a fixed weight of the foamed particles, which have been weighed in the weigh hopper, a holding hopper which acts as a pressurized tank, and a filling machine for filling the foamed particles into a mold. The filling apparatus allows for the successive weighing and pressurized containment of the foamed particles prior to being fed into the mold cavities.Type: GrantFiled: April 1, 1992Date of Patent: February 8, 1994Assignee: JSP CorporationInventors: Hideki Kuwabara, Hidehiro Sasaki, Satoru Shioya
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Patent number: 5252054Abstract: An apparatus for providing batches of a mouldable, fibre-reinforced thermoplastic material matched to a moulding to be produced and accompanied by heating, wherein a free-flowing initial product of fibres and thermoplastic material-containing binders are heated as a strand and a matched batch is separated from the strand and supplied to batch further processing. The apparatus includes a melting device with a melting channel, through which the material to be processed is pressed as a continuous strand, as well as a cooling station.Type: GrantFiled: November 12, 1991Date of Patent: October 12, 1993Assignee: Menzolit GmbHInventors: Gerd Ehnert, Manfred Ehlers, Rolf von Paumgartten
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Patent number: 5240719Abstract: An apparatus for molding a cap (16) including a base portion (18) and peripheral skirt (20) extending axially from and about the base portion (18) includes an outer surface forming mold (44) for forming an outer surface of the base portion (18) and the peripheral skirt (20) and an inner surface forming mold (46) seatable within the outer surface forming mold (44) for forming an inner surface of the base portion (18) and the peripheral skirt (20). The outer surface forming mold (44) is retractable from seated engagement with inner surface forming mold (46) for exposing the moded cap (16) therebetween. The inner surface forming mold (46) includes a core portion (52) and lug forming mold portions (54) disposed radially peripherally thereabout, the lug forming mold portions (54) being able to project axially from and retract radially inwardly relative to the central core portions (52) for releasing and ejecting the molded cap (16)from the inner surface forming mold ( 46).Type: GrantFiled: September 27, 1991Date of Patent: August 31, 1993Assignee: Caran EngineeringInventor: Peter Hedgewick
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Patent number: 5131831Abstract: A frame is swingably mounted to a stationary support above an indexing mold tray conveyor. Mounted to the frame is a clay supply device comprising an extruder and a pair of mutually facing belts having vertical runs. Lumps of clay are extruded and deposited by the facing belts in the tray cavities on the tray conveyor.Type: GrantFiled: March 8, 1991Date of Patent: July 21, 1992Assignee: Beheermaatschappij De Boer Nijmegen B.V.Inventor: Rudy Peeters
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Patent number: 5098628Abstract: A centrifugal molding method which can smooth the inner surface of the resin concrete layer of a resin concrete pipe or of a composite pipe having a resin concrete layer even without using any special sand conditioning mechanism and which is high in productivity includes producing a composite pipe having a resin concrete layer or producing a resin concrete pipe by moving an arm member of a pipe material feeding device forward and backward axially through a pipe forming outer mold rotating about an axis thereof and by feeding pipe materials from a discharge port formed in a front end of the arm member. The resin concrete layer is formed by feeding resin and aggregate to a mixing portion provided at the front end of the arm member through separate feed routes, mixing the two in the mixing portion and discharging the resulting mixed resin concrete material from the discharge port.Type: GrantFiled: June 26, 1991Date of Patent: March 24, 1992Assignee: Nippon Shokubai Co., Ltd.Inventors: Hiroshi Okamoto, Takaaki Kawano, Toshiyuki Tsujiuchi, Hidenori Katayama
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Patent number: 5078937Abstract: A method for producing a blank of a slab-like product, in which method a fibrous material such as chips or the like is mixed with a binder material such glue, cement or the like, and the mixture is fed into a blank-forming apparatus. The method is implemented by feeding the mixture of fibrous and binder materials from the blank-forming apparatus to a conveyor or similar platform in order to form a blank, after which one or more layers of blank-separating material is dispersed layer by layer onto the blank, and finally a second blank is laid onto the layers of blank-separating material.Type: GrantFiled: July 9, 1990Date of Patent: January 7, 1992Assignee: Rauma-Repola OyInventor: Harri Eela
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Patent number: 5068226Abstract: Cyclodextrins and especially ionic cyclodextrin derivatives facilitate the iontophoretic delivery of pharmaceutically active agents.Type: GrantFiled: April 30, 1990Date of Patent: November 26, 1991Assignee: Cyclex, Inc.Inventors: Ned M. Weinshenker, William P. O'Neill
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Patent number: 5059111Abstract: An apparatus for processing unvulcanized rubber utilizing intermeshing grooved rollers. To obtain rubber material having an optimally jagged surface, at least the cutting disks of one of the grooved rollers are additionally provided with teeth.Type: GrantFiled: October 26, 1989Date of Patent: October 22, 1991Assignee: Continental AktiengesellschaftInventors: Jurgen Mossinger, Siegfried Stein, Max Stephan, Ralf Feierabend
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Patent number: 5044911Abstract: Molds for making metallic nuclear fuel rods are provided which present reduced risks to the environment by reducing radioactive waste. In one embodiment, the mold is consumable with the fuel rod, and in another embodiment, part of the mold can be re-used. Several molds can be arranged together in a cascaded manner, if desired, or several long cavities can be integrated in a monolithic multiple cavity re-usable mold.Type: GrantFiled: April 6, 1989Date of Patent: September 3, 1991Assignee: United States Department of EnergyInventors: Bobby R. Seidel, Donald B. Tracy, Vernon Griffiths
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Patent number: 5035593Abstract: A pressurized slurry casting machine is provided which includes a feed tank with an agitator, a vertical conduit extending from the feed tank to a mold. The machine operates by creating pressure in the feed tank with the agitator propeller whereby the ceramic slurry will be forced to move up the straight conduit into the mold so as to be formed into the desired article. The respective connections of the conduit to the mold and the feed tank are each air-tight connections such that no air bubble-like contamination will result in the finished ceramic product. There is also provided a vacuum system capable of producing a negative pressure in the feed tank.Type: GrantFiled: November 7, 1989Date of Patent: July 30, 1991Assignee: Industrial Technology Research InstituteInventors: Liang Y. Huang, San Y. Chen
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Patent number: 5022838Abstract: Multi-axis rotational polymeric mixture distributing apparatus includes a raw material supplying portion, a supporting portion, a raw material mixing portion, a polymeric mixture distributing portion, a polymeric mixture accepting portion and a control portion. The raw material supplying portion includes a plurality of reservoirs, each connected independently with the mixing portion. The supporting portion includes a plurality of driven frame members each with a large open central area being disposed between parallel spaced upstanding end sections and rotatably supported thereon, each being progressively smaller in size than the next larger frame member and disposed within the open central area thereof. Alternate frame members are rotatable about aligned axes with frame members therebetween rotatable about axes generally perpendicular thereto. The smallest frame member includes rotatable holding sections.Type: GrantFiled: October 5, 1989Date of Patent: June 11, 1991Inventor: LeRoy Payne
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Patent number: 4925381Abstract: A plasticized resin is extruded from an extruding machine into an accumulator into which the resin is stored by an amount exceeding the amount required for one resin molding operation. The stored resin, in operation, is fed through a flexible hose towards a gear pump under controlled pressure conditions. The resin is measured by the gear pump and the displacement and the rotational speed of the gear pump are controlled by a suitable controller such as microcomputer to exactly measure the plasticized resin to be charged into the mold cavity in a predetermined distributing mode. The clamping of the mold can be effected by a clamping force less than that required by a conventional press-molding machine.Type: GrantFiled: May 10, 1988Date of Patent: May 15, 1990Assignee: Chisso CorporationInventors: Kazuo Aoki, Tsutomu Moteki, Kazuhiro Kimura
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Patent number: 4921417Abstract: A molding apparatus for molding a clay pigeon includes a bypass tube having a tip disposed in a blow orifice communicating with a cavity of a metal mold in the form of the clay pigeon. The bypass tube has a diameter smaller than that of the blow orifice and compressed air, which leads molding material in the blow orifice, passes therethrough in order to supply the molding material mixture of at least sand and hardening agent to the cavity, whereby corners and details of the cavity are satisfactorily filled with the molding material supplied to the cavity.Type: GrantFiled: December 19, 1988Date of Patent: May 1, 1990Assignee: Sato Factory Co., Ltd.Inventor: Akiyoshi Sato
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Patent number: 4894000Abstract: A multifunctional assembly for use in various plastic forming processes includes a housing conformed for selective partition to receive an incandescent light assembly as a source of heat and selectively positioned pneumatic cylinders for compressing heated plastic into forms and extrusion dies. An air pump selectively connected by manifolds may then be used for generating vacuum and pneumatic pressure both for the forming processes and for the pneumatic cylinders.Type: GrantFiled: November 19, 1987Date of Patent: January 16, 1990Inventor: Richard C. Coates, Jr.
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Patent number: 4776497Abstract: An apparatus for quantitatively extruding food material is provided. At least one introducing means such as a driven roller having a vane adapted to protrude from it propels the food material into a cylindrical food forming device, which comprises a longitudinal groove and a cylinder having a rectangular opening on a side thereof and encloses the food material for a piston to extrude it from the apparatus.Type: GrantFiled: September 23, 1986Date of Patent: October 11, 1988Assignee: Rheon Automatic Machiner Co., Ltd.Inventors: Torahiko Hayashi, Yasunori Tashiro
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Patent number: 4734021Abstract: A machine for building a dome or sphere has an extruder that extrudes part of a wall of a dome or sphere from fluid material which hardens on extrusion as the extruder travels around a center axis. A ramp allows the extruder to gradually ride up onto the initial wall so that another partial wall of the sphere can be formed. The extruder continuously moves along its own produced track in a spiral path to ultimately form a dome or sphere, as desired.Type: GrantFiled: June 17, 1986Date of Patent: March 29, 1988Inventor: Paul T. Maddock