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| Number | Title | Issue Date |
| 4576016 | Ice making apparatus A new and improved auger-type ice-making apparatus preferably includes at least a pair of removable and interchangeable head assemblies adapted for preselectively producing either relatively dry flake or chip ice, cube ice or smaller nugget-sized ice piec... | 03/18/1986 |
| 4565515 | Nozzle assembly for extruding a synthetic-resin tube A nozzle assembly for extruding a tube has an outer housing sleeve having an inner surface centered on an axis and having an axially forwardly directed front end and a core formed of attached-together front, intermediate, and rear core ports. The front co... | 01/21/1986 |
| 4563147 | Apparatus for extruding a tube A machine has a nozzle formed with an annular passage centered on an axis and having at an outer axial end an annular mouth. A plastic mass is introduced under pressure into the inner axial end of the passage at two diametrally opposite locations and mixe... | 01/07/1986 |
| 4559104 | Apparatus for discharging material An apparatus is disclosed for discharging material through an elongate aperture in a substantially constant amount per unit length of said aperture. The apparatus comprises a screw discharging unit having an inlet end and including a screw housing with a ... | 12/17/1985 |
| 4559000 | Apparatus for the production of granulates An apparatus forms granulates from a flowable viscous mass. The mass is delivered to a tubular body and flows downwardly from a lower slit thereof in the form of drops. An endlessly revolving belt travels across the slit in tight engagement therewith. The... | 12/17/1985 |
| 4555230 | Calibrator for use in the manufacture of double walled thermoplastic pipe In an apparatus such as a corrugator for manufacturing thermoplastic pipe with a corrugated outer wall and a smooth inner wall, a calibrator is employed to provide a smoother inner wall and a more rapid inner wall cooling. The calibrator includes a tube w... | 11/26/1985 |
| 4548570 | Extrusion apparatus for producing thermoplastic pipe Apparatus is disclosed for the formation of pipe comprising one or more layers of thermoplastic resin. The apparatus comprises a die housing having a bore therethrough with a mandrel longitudinally supported within the bore by radial members extending fro... | 10/22/1985 |
| 4548567 | Apparatus for manufacturing a grooved cylindrical core particularly for optical cable This invention relates to manufacturing a grooved cylindrical core by extrusion. The manufacturing device comprises a single rotating integral die that has a tapered rear portion and a grooved cylindrical front portion. The tapered portion surrounds a sta... | 10/22/1985 |
| 4547142 | Process and apparatus for producing plastic pipe An improved ram extruder for the production of plastic pipe, especially plastic pipe of high molecular weight low pressure polyethylene, which comprises an extrusion die, heating means for heating polymer to be extruded, a ram which is reciprocated in the... | 10/15/1985 |
| 4541793 | Extruder nozzle and a method for producing plastic products In order to homogenize and to obtain a uniform temperature distribution in a plastics substance, which is to be extruded between an inner and an outer component, in a nozzle, the substance is made to pass a bearing structure comprising a number of rolling... | 09/17/1985 |
| 4521368 | Method of making internally cross-ribbed plastics material structure A unitary tubular product having an inner layer and an outer layer connected together by a bi-planar mesh formed of helical ribs bonded at their cross-over points is produced in a single coaxial tubular extrusion process, the structure being integrally or... | 06/04/1985 |
| 4518343 | Extrusion die A thermoplastic pipe extrusion die having an adjustment section in a radial portion of the die channel provides excellent control of final pipe wall thickness uniformity.... | 05/21/1985 |
| 4512943 | Extrusion process for producing thermoplastic pipe A process is disclosed for the formation of pipe comprising one or more layers of thermoplastic resin whereby an annular stream of thermoplastic material is transported through an annular extrusion passageway. The downstream annular portion of the extrusi... | 04/23/1985 |
| 4495022 | Extrusion method and apparatus A diverter and coextrusion diverter are described which include means for adjusting the cavity of the diverter so as to control the uniformity of extrudate exiting the diverter. The diverter including a gap having beveled opposing faces.... | 01/22/1985 |
| 4483812 | Valve plate and feedblock design for co-extrusion apparatus and co-extrusion process using same Disclosed is an apparatus and process for producing multiple-layer film or sheeting which includes an improved laydown means comprising adjustable cam-actuated control means for controlling the polymer flow and individual layer thickness.... | 11/20/1984 |
| 4480976 | Adjustable sliding mold for continuous casting installations Disclosed is an adjustable sliding mold assembled of two angular mold pieces slidably engaging each other at two mating surfaces. Adjusting means, preferably in the form of a spindle, is hinged to an outer side of a mold part to move the same transversely... | 11/06/1984 |
| 4479768 | Sealable discharge die for thermoplastic A sealable discharge die for thermoplastics, comprising a housing, a dieplate which closes the latter except for perforations for discharge of the plastic melt in strands or filaments, and a perforated plate located immediately below or above this dieplat... | 10/30/1984 |
| 4474545 | Device for manufacturing multicolored marble soaps, from a base paste and one or more liquid pigments Pressurized colored liquids are inserted in the base mass, immediately upstream or in correspondence with the last homogenizing means; then a rotor arranged between the last perforated refining means and the extrusion hole, provides for a partial mixing o... | 10/02/1984 |
| 4472129 | Head for extrusion of a tubular parison formed of at least one layer of material Improved extrusion head for use in forming plastic containers or tubular films (optionally with multi-ply walls) by the extrusion-blowing process. The typical extrusion head used in this process has flat compensating rings bounding a portion of the frusto... | 09/18/1984 |
| 4470790 | Adjustable extrusion die assembly An adjustable extrusion die assembly forming part of an extruder for an elastic material, comprises: a stationary die member having an end surface; a plurality of movable die members positioned in side-by-side relationship to one another and slidably cont... | 09/11/1984 |
| 4468366 | Baffled laminated extrusion dies Method and apparatus is set forth for extruding honeycomb structures having cohesive cellular walls from an extrusion die. A baffle member is provided within the flow passageways of the die so as to provide impedance to longitudinal batch flow through cer... | 08/28/1984 |
| 4468365 | Extrusion dies for thin wall substrates Method and apparatus is set forth for extruding honeycomb structures having cohesive cellular walls from an extrusion die. Deflector means are provided within flow passageways of the die, wherein the deflector means has a secondary feed system such that t... | 08/28/1984 |
| 4464318 | Method of controlling the film thickness at a blown film installation A nozzle ring of an extruder for blowing tubular plastics film is divided into cooling sectors provided with adjusting elements. The thicknesses of the blown film are measured over the circumference thereof and a number of film sectors of equal circumfere... | 08/07/1984 |
| 4464104 | Adjustable ring nozzle for extruding synthetic-resin tubing A ring nozzle for use with an extruder to continuously form a synthetic-resin tube has a substantially stationary back nozzle part having an axially forwardly directed front face and formed with an axially centered passage opening at the face. This part i... | 08/07/1984 |
| 4455133 | Extruder coating die An extruder coating die for depositing protective cushions on the plastic jackets of hoses, tubes or the like. The extruder consists of a fixed part and of at least one movable part which can be adjusted between two end positions and combines the followin... | 06/19/1984 |
| 4450131 | Zero runout counter-rotating film extruder This relates to a die assembly for extruding tubular casing films wherein there are counter-rotating die members. One of the die members is mounted for shifting relative to its base under the influence of hydrodynamic pressures of the flowing extrudate so... | 05/22/1984 |
| 4444702 | Method and apparatus for producing extruded sections of thermoplastic material In the production of a tubular extruded section of thermoplastic material, the actual length of an extruded section at the end of the extrusion operation may be smaller or greater than the length of the extruded section which passed through the discharge ... | 04/24/1984 |
| 4439125 | Adjustable die mechanism An adjustable die mechanism (10) for extruding a profiled strip of plastic or elastomeric material wherein a plurality of adjacent segments (44) is located upstream and in spaced relation from a final extrusion die assembly (32), having a predetermined pr... | 03/27/1984 |
| 4435359 | Apparatus and method for fabricating tubes from powder An apparatus (10) and method for fabricating tubes (26) from powders (32). A retractable, rotating mandrel (18) is disposed within a powder hopper (12) and circumscribed by a plurality of swaging dies (20). A flexible iris (14), disposed between the hoppe... | 03/06/1984 |
| 4432718 | Extrusion head An extrusion head with an annular extrusion die gap or orifice for fabricating a hollow extrudate of thermoplastic material. The extrusion head has a central die core and outer die casing ring cooperating to define the die gap. The inner boundary of the d... | 02/21/1984 |
| 4430282 | Method for the extrusion of tetrafluoroethylene polymer tubes Tetrafluoroethylene polymer tubes are ram extruded. Desirable quality tubes are obtained by positioning an insert between ram and mandrel to maintain the ram and mandrel concentric.... | 02/07/1984 |
| 4424178 | Procedure and device for production of a preform of thermoplastic synthetic material by means of extrusion During the production of a preform of thermoplastic synthetic material by means of extrusion from an extruder head provided with a slot-shaped exit opening, the width of which is changed according to a specific program during the extrusion of the preform ... | 01/03/1984 |
| 4422838 | Extrusion head for use in blow molding machine An extrusion head for use in blow molding machines for molding parison having a single layer or wall or a plurality of layers or walls, in which a plunger is slidably interposed between a head body and a core and the plastic material is successively accum... | 12/27/1983 |
| 4422839 | Exit die An annular exit die for an extrusion head of the type having a die casing ring and a tapered die core cooperating to form an annular die gap or orifice for fabricating a hollow extrudate of thermoplastic material. The tapered die core is adjustable in the... | 12/27/1983 |
| 4420451 | Method for film extrusion comprising rotary die parts A high-strength laminate comprising generally weakly adhered biaxially oriented films, each formed of a blend which exhibits a distinct fibrous morphology with the fibres forming a distinct unidirectional grain when measured on a macro-scale but with the ... | 12/13/1983 |
| 4419315 | Extruded fin-type weatherstrip An integrally extruded all plastic "pile" weatherstrip comprises an elongated longitudinal substrate from which vertically project a plurality of integral, spaced parallel, thin, flexible, deformable, wavy S-configured fin members. The exposed upper ends ... | 12/06/1983 |
| 4411614 | Removable contoured insert for an extrusion die An insert is sized for close-fitting reception into either a distribution channel or a standardized receptacle formed in an extrusion coating die to define a distribution channel dedicated to a particular coating fluid.... | 10/25/1983 |
| 4403934 | Coextrusion die A coextrusion die for the extrusion of plastics materials in the shape of a tubular film comprising supply means for separately supplying at least two plastics materials to said die, a distribution channel system connected to each supply means, each distr... | 09/13/1983 |
| 4397628 | Extrusion cylinder assembly Extrusion apparatus including rotary shell having plural circumferential rows of extrusion orifices and a stationary inner member, defining with said shell, circumferential channels communicating with said orifices.... | 08/09/1983 |
| 4395210 | Apparatus for manufacture of turbulence member made of synthetic resin Turbulence members made of a synthetic resin are manufactured by a method which comprises melting a synthetic resin and causing the molten resin to be rotated around its axis and at the same time extruded in a state wherein the molten resin is spirally tw... | 07/26/1983 |
