Plural Orifices Patents (Class 425/382R)
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Patent number: 4217083Abstract: Dough is extruded from a screw extruder through a nozzle, preferably a twin-slot nozzle, and an apertured blocking plate is placed between the tip of the extrusion screw and the nozzle assembly for making the pressure distribution across the dough in a pressure equilization chamber between the blocking plate and the nozzle more uniform and for controlling the rate of flow of the dough towards the extrusion nozzle slots. The blocking plate has two series of parallel channels arranged on two opposed arcs of the same circle centered on the central axis of the nozzle (the axis of the extrusion screw) and the series are symmetrical about a plane of symmetry of the nozzle.Type: GrantFiled: March 13, 1978Date of Patent: August 12, 1980Assignee: Diepal CorporationInventor: Jean H. J. Machuque
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Patent number: 4198197Abstract: This invention refers to a pelletizing and feeding-out device for fodder with varying degree of moisture, so called semi-moist fodder. The device can also take care of fish waste and other waste products, which can be used as fodder. The device comprises a rotatable container for the fodder, at the bottom of which a feeding-out device is arranged comprising a feeding chamber non-rotatably connected to the container and a feed screw extending through the feeding chamber and which does not take part in the rotation of the container and feeding chamber. The feed screw presses the fodder through a number of holes in the feeding chamber, at which the fodder is cut into suitable pellets or pieces. The container is further provided with at least one internal mixing arm constituting a support for the end of the feed screw located inside the container.Type: GrantFiled: May 9, 1978Date of Patent: April 15, 1980Assignee: AB FyrtornetInventor: Gunnar Hedengerg
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Patent number: 4193753Abstract: An apparatus of this invention can automatically produce flower-shaped decorations which may be used to decorate cakes. The apparatus substantially is characterized by a flower forming mechanism which comprises a cylinder into which a desired amount of raw material such as cream is charged, a pattern plate provided with a plurality of inclined apertures, a piston rod which extrudes the raw material through the pattern plate, means to form a stem portion of the flower and means to cut off the flower.Type: GrantFiled: December 28, 1978Date of Patent: March 18, 1980Inventor: Sunao Yoshioka
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Patent number: 4184832Abstract: An extrusion pelleting apparatus is disclosed wherein the outermost portion of an extrusion orifice is surrounded by a heat reservoir maintained at a temperature significantly higher than the softening temperature range of the polymer being extruded. The high temperature heat reservoir constitutes a heat source from which individual extrusion orifices may be heated above the polymer's softening range to assist in melting frozen plugs of polymer which may block the orifice from time to time.Also disclosed is a heat flow control mechanism, in effect, for slowing the heat release from the reservoir to the individual extrusion orifices for economy of operation while still making available such high temperature source for unfreezing such plugs.Type: GrantFiled: July 3, 1978Date of Patent: January 22, 1980Assignee: Leesona CorporationInventor: David W. Cuff
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Patent number: 4179255Abstract: An improved melt cutter apparatus for producing pellets from a strand of a partly molten thermoplastic resin in cooperation wth an extrusion die is provided. The apparatus comprises a drive shaft, a drive rod rotatably connected thereto, a knife holder connected rotatably to the drive rod, a knife attached thereto and means for advancing the knife toward the extrusion die.Type: GrantFiled: March 13, 1978Date of Patent: December 18, 1979Assignee: E. I. Du Pont de Nemours and CompanyInventor: Alan D. Hale
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Patent number: 4170450Abstract: In a thermoplastic extrusion system where a single extruder feeds molten polymer through a manifold to a plurality of separate extrusion orifices, a valve system is provided which distributes and regulates the flow of the molten polymer to the individual extrusion orifices.Type: GrantFiled: November 7, 1977Date of Patent: October 9, 1979Assignee: Mobil Oil CorporationInventor: F. John Herrington, Jr.
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Patent number: 4168944Abstract: Apparatus for manufacturing a tubular honeycomb with adiabatic passages 107 formed integrally on its outer wall includes a first body 2 having a plurality of honeycomb shaped through holes 6, 7, 10 and a flange 3 secured to an extrusion pipe 1 carrying a plastic material under pressure, and a truncated conical portion 5 projecting coaxially from the flange. A second cylindrical body 12 has a truncated conical through hole disposed coaxially around the conical portion of the first body to define therebetween a first annular space 21 communicating with the honeycomb, and comprises truncated conical projection 15 alternately provided with slits 16 and holes 17 communicating with the first annular space. The first and second bodies are secured together by a stopper ring having a truncated conical through hole communicating with the slits and holes in the second body and disposed coaxially therearound to define therebetween a second annular space 22.Type: GrantFiled: July 27, 1978Date of Patent: September 25, 1979Assignee: NGK Spark Plug Co., Ltd.Inventors: Akira Morikawa, Yoshinori Narita
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Patent number: 4165957Abstract: An apparatus for manufacturing insulated electric wire of the enamelled-wire type wherein an insulating sheath adhering to the wire is formed by extrusion of selected thermoplastics which are heated to a temperature above their melting-point, then pressed onto the wire while in a fluid state. The extrusion apparatus includes a gauging die with a compressing cone having an aperture angle of from 2.degree. to 20.degree., preferably 7.degree..Type: GrantFiled: June 29, 1977Date of Patent: August 28, 1979Assignee: Maillefer S.A.Inventor: Eberhard Kertscher
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Patent number: 4165212Abstract: Apparatus for extruding a plurality of tubes of plastics material simultaneously for blow molding purposes comprising a plurality of extrusion heads, each having an accumulator chamber from which plastics material can be discharged intermittently to form the tubes, and a mechanism operatively connected to discharge means associated with each accumulator chamber for synchronizing the filling and discharging of the accumulator chambers so that a single source of plastics material can be used to fill the accumulator chambers at a substantially uniform rate and the mold halves of a single blow mold can be opened and closed on the extruded tubes which are discharge simultaneously and will be of uniform length.Type: GrantFiled: March 2, 1978Date of Patent: August 21, 1979Assignee: Hoover Universal, Inc.Inventor: William E. Ziegler
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Patent number: 4164388Abstract: Extrusion apparatus for extruding pliable materials wherein the material is introduced into an extrusion chamber and through a plurality of extrusion orifices located in an extrusion plate closing off one end of the extrusion chamber. The extrusion orifices are circumferentially spaced about the center of the die plate. Air injection means are provided for injecting air radially outwardly from the center of the die toward the ribbons of material being extruded, and also separate air streams are directed radially inwardly at the material as it is being extruded through the orifices.Type: GrantFiled: June 16, 1978Date of Patent: August 14, 1979Assignee: International Spike, Inc.Inventors: Richard B. Inman, Ivan C. McCarty
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Patent number: 4150595Abstract: A sub-water granulating device for granulating thermoplastic synthetic plastics materials is operatively combined with the nozzle plate of a screw extruder. The device comprises a rotary cutting tool head which is enclosed by a dome or hood. Flushing water is fed into the dome and discharged therefrom and the flow of water is directed to clean the cutting tools and to carry out granules cut by the tools thereby preventing the formation of lumps of granules and adhesion thereof to the nozzle plate.Type: GrantFiled: September 21, 1977Date of Patent: April 24, 1979Assignee: Werner & PfleidererInventors: Reinhard Loffler, Harald Possler
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Patent number: 4138208Abstract: An improved die face cutter is provided which is particularly suited for preparing pellets of synthetic resinous extrudable thermoplastics wherein the strand being extruded is surrounded by cooling water on emergence from the die and prior to encountering the cutter blade.Type: GrantFiled: February 7, 1977Date of Patent: February 6, 1979Assignee: The Dow Chemical CompanyInventor: Earl T. Heckeroth
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Patent number: 4127376Abstract: A method and apparatus for forming a proteinaceous mass into a fibrous and layered structure, including imparting a gross fibrous structure to the mass by passing the mass through a helical conveyor and layering the fibrous structure by extruding the same through a slot and changing the direction of movement of the mass as it emerges from the slot into an opening, the compression and extrusion being carried out at elevated temperature to heat set the mass.Type: GrantFiled: September 2, 1976Date of Patent: November 28, 1978Assignee: Ranks Hovis McDougall LimitedInventors: John F. Ratcliffe, Jeffrey G. Barker
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Patent number: 4124339Abstract: The specification discloses a system and process for producing discrete chilled products having preselected weights from a semi-fluid mixture. The semi-fluid mixture is pumped along a distribution path to an extruding manifold which extrudes a plurality of parallel continuous lengths of the mixture. The continous lengths are directed through a chilling station in a parallel relationship in order to chill and firm the lengths such that the lengths maintain their extruded cross-sectional configuration. A cutter periodically severs the continuous lengths at predetermined intervals to provide a plurality of discrete products having predetermined weights. The pumping rate, rate of travel through the freezer and periodic severing of the continuous lengths may be selectively varied in order to maintain any desired weight of the discrete products.Type: GrantFiled: September 4, 1975Date of Patent: November 7, 1978Assignee: The Jimmy Dean Meat Company, Inc.Inventor: Vincent E. Bernard
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Patent number: 4120625Abstract: An improved die face cutter is provided which has a fluid cooled plate disposed on the die face. Smearing of freshly cut polymer is reduced.Type: GrantFiled: April 18, 1977Date of Patent: October 17, 1978Assignee: The Dow Chemical CompanyInventor: Earl T. Heckeroth
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Patent number: 4118167Abstract: A multiple-cavity extrusion die for coextruding a plurality of indefinite lengths of multiple-layer tubular rubbery material. Core mandrels which extend into openings in the face of the die are adjustable for concentricity with respect to the die by internal or special external adjusting means. Cylindrically shaped core dies have frustro conically shaped forward portions which form extrusion dies with the cores for the core layer of rubbery material and form extrusion dies with a beveled back edge of an adjustable cylindrical cover die. Each of the cover dies is axially adjustable with respect to a respective core die to adjust the speed at which the individual tubes are extruded so that the speed of all tubes can be equalized. Special concentricity plates on the face of the covered dies are adjustably mounted with respect thereto so as to adjust the die openings for concentricity of the cover layer of rubbery material of each tube.Type: GrantFiled: January 28, 1976Date of Patent: October 3, 1978Assignee: Cadillac Rubber & Plastics, Inc.Inventors: Arnold S. Lund, Thomas L. Stroh
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Patent number: 4111632Abstract: The present invention is an improved pellet mill die having tapered grooves along each side of the compression surface of the die. The tapered grooves reduce the stresses at the maximum stress areas and thus control the breakage of metal between the first rows of holes and the inner edges of the grooves.Type: GrantFiled: June 20, 1977Date of Patent: September 5, 1978Assignee: Koppers Company, Inc.Inventor: Richard Hazen Leaver
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Patent number: 4104958Abstract: Soft and moist vegetables are kneaded, severed and partially homogenized by a feed screw which rotates in a barrel and are admitted into a mincing unit wherein the partially homogenized material is severed by knives of a rotor which is surrounded by an apertured cylindrical stator. The comminuted material is thereupon caused to pass through the holes of an extruder and is severed behind the extruder to yield discrete crumbs which can be used as animal fodder or dried and ground to yield flour or farina, particularly flour or farina which can be used for the baking of tortillas. Vegetables which are admitted into the barrel are freshly harvested (such vegetables may include banana peels) or cooked. For example, dried grains of maize can be cooked in the presence of water and rinsed prior to admission into the barrel.Type: GrantFiled: July 29, 1975Date of Patent: August 8, 1978Assignee: Gebrueder Buehler AGInventors: Josef Manser, Friedrich Egger
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Patent number: 4091065Abstract: The ability to maintain a constant differential between modification ratios of trilobal filaments under cospinning conditions is provided by spinning a filament of lower modification ratio through a spinneret orifice consisting of three radially intersecting tapered slots and a filament of a higher modification ratio through a spinneret orifice configured as three radially intersecting reverse-tapered slots. The orifices configured as three radially reverse-tapered slots provide a high modification ratio with low sensitivity to normal spinning process fluctuations which in combination with orifices having tapered slots for filaments of lower modification ratio facilitate maintenance of a more constant differential in modification ratios between the filaments.Type: GrantFiled: March 22, 1977Date of Patent: May 23, 1978Assignee: E. I. Du Pont de Nemours and CompanyInventor: Chandrakant Shantilal Shah
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Patent number: 4088433Abstract: An extrusion die having a plurality of orifices arranged therein so that the number of orifices per unit area in the plane of the external die face is larger near the periphery of the die face than near the center thereof provides for the extrusion of material through all the die orifices at a relatively uniform linear velocity.Type: GrantFiled: February 25, 1977Date of Patent: May 9, 1978Assignee: Union Oil Company of CaliforniaInventor: Howard D. Simpson
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Patent number: 4085175Abstract: Self-bonded, balanced nonwoven fibrous fabrics having fibers uniaxially oriented and junction points of biaxially oriented film tissue and fibers in the plane of the fabric, the fibers being primarily oriented in the machine direction with the biaxially oriented film tissue being oriented in the cross direction. The nonwoven fabrics are produced by extruding a molten polymer radially from a circular die, quenching and then drawing the extrudate.Type: GrantFiled: September 15, 1975Date of Patent: April 18, 1978Assignee: PNC CorporationInventor: Herbert W. Keuchel
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Patent number: 4080816Abstract: This concerns a process for manufacturing extrusion sections made of a light weight metal, using an extrusion tool with a single hole die, whereby several extrusions are produced simultaneously using a common single hole in the die. The device for carrying out the process allows a movable steel strip to pass through the common die hole this dividing it up into separate extrusion chambers.Type: GrantFiled: July 8, 1975Date of Patent: March 28, 1978Assignee: Swiss Aluminium Ltd.Inventors: Adolf Ames, Jean-Jacques Theler
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Patent number: 4081231Abstract: In a thermoplastic extrusion system where a single extruder feeds molten polymer through a manifold to a plurality of separate extrusion orifices, a valve is provided which distributes and regulates the flow of the molten polymer to the individual extrusion orifices.Type: GrantFiled: December 23, 1976Date of Patent: March 28, 1978Assignee: Mobil Oil CorporationInventor: F. John Herrington
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Patent number: 4081230Abstract: An extrudate cutting device comprising(a) a frame means,(b) attachment means mounted on said frame means for attachment thereof to the extrusion end of an extruder,(c) second attachment means mounted on said frame means and adapted to receive a rotatable elongated cutting means and(d) elongated cutting means rotatably mounted on said second attachment means and a method of cutting extrudate into substantially identically sized sections, are disclosed.Type: GrantFiled: February 26, 1975Date of Patent: March 28, 1978Assignee: American Cyanamid CompanyInventor: Leslie N. Glickman
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Patent number: 4078874Abstract: An apparatus for conveying ground cheese comprising a hopper to receive the ground cheese and having an auger adapted to extrude the cheese through a multiplicity of holes in a die plate. Two sets of rotating blades are located in a housing outwardly of the die plate and act to cut the extruded cheese into a plurality of small particles or plugs. Air is supplied to the lower end of the housing and the cut particles are suspended in the air stream and discharged from the upper end of the housing.Type: GrantFiled: November 15, 1976Date of Patent: March 14, 1978Assignee: DEC International, Inc.Inventor: Roy A. Lenhardt, Sr.
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Patent number: 4076477Abstract: A plurality of extrusion dies are operated from the same source of heat-plastified polymeric material, e.g., from a single barrel extruder, via a distribution manifold which includes forwardly diverging flow passages each leading to a different one of the dies. The flow passages of the manifold have equal flow capacities and compensation for differences between the extrusion dies is accomplished by equipping each die assembly with a replaceable flow control insert, the inserts being so dimensioned that the pressure differential across each die assembly, including the insert, is the same.Type: GrantFiled: December 8, 1975Date of Patent: February 28, 1978Assignee: Grandview Industries LimitedInventor: Gerhard A. Hacke
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Patent number: 4071307Abstract: A die for extruding filaments from molten plastic material such as polyethylene or polypropylene is heated until steady extrusion conditions are reached. The direct heating is then stopped, so that the die is only partially heated from the molten material while it is extruded. The extruded filaments are sheared by a blade interacting with the die. The resulting chips are cool enough for flowing to an outflow hopper without sticking to one another or to the blade. Sticking is further prevented by maintaining a strong cooling air stream within the hopper and around the blade and by making the extrusion holes in the die diverge at their output ends and by arranging them near the periphery of the die for maximum mutual distance.Type: GrantFiled: December 10, 1975Date of Patent: January 31, 1978Inventor: Luigi Porro
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Patent number: 4068992Abstract: An apparatus for manufacturing tiles by extrusion of clay or a similar material comprising a die adapted with a number of spaced apart pivotable rigid blades which are arranged such as to equalize the output speeds of several superposed layers of extruded material. Means are also provided substantially in the planes of the blades downstream of the outer ends thereof for projecting a pulverized powder product at right angles to the direction of extrusion into interstices between the layers. Impermeable coatings are added to the outer surfaces of the superposed layers and the assembly is then cut into piles of tiles which can then be delivered into an oven for baking, the heat ensuring removal of the impermeable coating and the separation powder product.Type: GrantFiled: April 29, 1976Date of Patent: January 17, 1978Assignee: Interoptik HandelsanstaltInventor: Arthur Buchel
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Patent number: 4061462Abstract: This invention relates to a process for extruding particular shapes in thermoplastic material and, more precisely, flat plates, corrugated plates and the like or, in general, shapes having one section much larger than the other; said process being suited to eliminate the uneven feed of the molten material coming out from a die. This invention relates also to an improved extrusion machine which is particularly useful for carrying out the aforementioned process.Type: GrantFiled: June 16, 1975Date of Patent: December 6, 1977Assignee: Montedison S.p.A.Inventors: Giancarlo Giannarelli, Walter Movilli
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Patent number: 4050874Abstract: A centrifugal extruder is provided with a friction generating element within a hollow rotor of the extruder. The material to be extruded is heated by shear generated by differential rotation between the extruder rotor and a shear generating element. Heat plastification is obtained adjacent the periphery of the rotor and a very short heat history is added to material treated in the apparatus.Type: GrantFiled: February 25, 1976Date of Patent: September 27, 1977Assignee: The Dow Chemical CompanyInventors: Douglas S. Chisholm, David H. Dawson
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Patent number: 4032279Abstract: An adapter apparatus for splitting a single extrudate into a plurality of extrudates wherein an adapter block of the adapter apparatus has at least three planar surfaces with an inlet opening on one planar surface and outlet openings on the other planar surfaces. A single conduit extends from the interior of the block to the inlet opening while a pair of conduits extend from the respective outlet openings and intersect the single conduit. Goosenecks interconnect each outlet opening to die means. All of the openings on the planar surfaces are circles.Type: GrantFiled: September 8, 1975Date of Patent: June 28, 1977Assignee: The B. F. Goodrich CompanyInventor: Heung Tai Kim
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Patent number: 4015926Abstract: An extrusion die head for attachment to an extruder wherein the die head has a single inlet bore that is connected to a plurality of outlet orifices via a chamber which spreads out the extrudate which in turn reduces the shape of the extrudate to a thin film via a narrow channel to equalize the pressure. The narrow channel is connected to the plural orifices via tapering passageways to provide an equalization of the flow of the extrudate.Type: GrantFiled: January 20, 1976Date of Patent: April 5, 1977Assignee: The B. F. Goodrich CompanyInventor: Sam Donald Nehmey
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Patent number: 4005962Abstract: An extruding machine for the extrusion of plastic or other similar materials in variegated forms comprising a series of bar members spaced from one another, wherein said bar members form by their interstitial spaces the extrusion chambers; said bar members having heating elements integrally disposed therein for the purpose of heating, to an amorphous state, the plastic material placed on and contacting the upper surface of said bars for extrusion into a receptacle beneath the bars.Type: GrantFiled: December 4, 1974Date of Patent: February 1, 1977Inventor: Frank R. Kobee
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Patent number: 4005960Abstract: An improvement in a method of applying plastic to a planar surface which comprises extruding the plastic through an annular orifice as a ring onto the planar surface. The improvement is particularly helpful in the manufacture of push button ends for beverage cans.Type: GrantFiled: October 14, 1975Date of Patent: February 1, 1977Assignee: American Can CompanyInventor: Frank John Herdzina, Jr.
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Patent number: 3994658Abstract: An extruder for simultaneously forming a plurality of clam strip shapes from a single source of extrudable material including particles of clams therein. The extruder includes a nozzle body which terminates in a nozzle opening and a forming member in operative relation thereto for use in forming the extruder product. A divider member within the nozzle body divides the nozzle opening into a plurality of nozzle openings and also divides the forming member into a plurality of forming members.The divider member extends upstream within the nozzle body to an upstream end which is maintained free of clam particles by virtue of a deflecting member which is mounted on the upstream end thereof. The upstream end of the deflecting member presents a downstream convex surface to the extrudable material and thereby prevents accumulation of the clam particles on the upstream end of the divider.Type: GrantFiled: November 29, 1974Date of Patent: November 30, 1976Assignee: DCA Food Industries Inc.Inventors: John P. McCarthy, Joseph Chin
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Patent number: 3981657Abstract: Plastically moldable ceramic batch material, which may be flowably extruded under pressure into a self-supporting article of desired shape and configuration, is passed through a flow homogenizer positioned within an extrusion cylinder upstream of an article-forming extrusion die positioned on the discharge end of the extrusion cylinder, to thoroughly homogenize such batch material during the extrusion operation and prior to being fed through the article-forming die.Type: GrantFiled: February 19, 1975Date of Patent: September 21, 1976Assignee: Corning Glass WorksInventors: Francis L. Orso, Giacomo J. Piazza
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Patent number: 3981664Abstract: An improvement for pellet mills for resolving the radial forces which develop between the die and the rollers. An extension is provided on the main shaft extending beyond the roller support frame arms, and a bearing assembly is mounted on the extension for supporting a spider connected to the die cover.Type: GrantFiled: August 7, 1975Date of Patent: September 21, 1976Assignee: Sprout, Waldron & Company, Inc.Inventors: Oszkar Bittner, Chester Donald Fisher
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Patent number: 3954361Abstract: A mechanism and method for producing a plurality of elongate filaments of plastic material from a die head which has a plastic flow chamber for receiving a flow of heated plastic material with the chamber leading to parallel small flow passages having individual tubes extending from the individual passages and having gas flow ducts positioned laterally outwardly of the die head for receiving a flow of heated gas with the ducts directed in a converging direction outwardly of the die head and permitting the opposed streams of gas to merge around the tubes and flow parallel thereto so that a high velocity stream of gas emerges with the plastic and attenuates the plastic stream for strength.Type: GrantFiled: May 23, 1974Date of Patent: May 4, 1976Assignee: Beloit CorporationInventor: Robert Edward Page
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Patent number: 3949031Abstract: A method for making a cellular article in which at least some of a plurality of extruded, generally parallel streams of strand-forming organic, thermoplastic, polymeric material are periodically expanded to provide bulbous portions along the lengths thereof, with such bulbous portions contacting and bonding with adjacent streams during their expansion, after which the streams are set to provide an integral article.Type: GrantFiled: August 9, 1973Date of Patent: April 6, 1976Assignee: FMC CorporationInventor: Theodore H. Fairbanks
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Patent number: 3947200Abstract: The invention relates to an apparatus and process for producing striated soap bars using a high intensity mixer extruder. A soap mass is levigated and homogenized in a high intensity mixer barrel and forced into a dye injection assembly wherein dye is injected into the soap mass. The soap mass with the injected dye is then forced through conically tapered nozzles to form a striated soap bar.Type: GrantFiled: September 17, 1974Date of Patent: March 30, 1976Assignee: Colgate-Palmolive CompanyInventor: Charles F. Fischer
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Patent number: 3941550Abstract: A multiple outlet flat film die apparatus and process which extrude separate streams of material to form any of various composites which may involve joining of similar or dissimilar materials, which includes individual manifold chambers separated from each other by heat insulating means inbetween. The heat insulating means in between such as for example heat insulating material between plates retards heat transfer between the materials. Each manifold is tapered toward its own die mouth; has separate melt inlets adapted for center, top and/or end feed operations; has separate pre-land and final land surfaces leading to individual outlet openings for precise control of melt flow; and has separate heat control means allowing precise temperature control for each melt as it flows toward the die. Temperature differentials may be extensive and may approach the difference between the original temperature of the melt delivered to each manifold. Heat differentials of 0.degree. to 200.degree.F. are an example.Type: GrantFiled: January 22, 1974Date of Patent: March 2, 1976Inventor: George J. Marion