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Class Information
Number: 425/381
Name: Plastic article or earthenware shaping or treating: apparatus > Stock pressurizing means operably associated with downstream shaping orifice > Including auxiliary shaping means (e.g., mandrel, etc.) associated with molding orifice > Movable orifice or movable mounted inner mandrel within orifice
Description: Apparatus which comprises (1) auxiliary shaping means (e.g., a shaping mandrel) movably mounted within the confines of the orifice means, or (2) means supporting an orifice means to provide movement thereof.










Patents under this class:
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Patent Number Title Of Patent Date Issued
4563147 Apparatus for extruding a tube Jan. 7, 1986
4559104 Apparatus for discharging material Dec. 17, 1985
4559000 Apparatus for the production of granulates Dec. 17, 1985
4555230 Calibrator for use in the manufacture of double walled thermoplastic pipe Nov. 26, 1985
4548567 Apparatus for manufacturing a grooved cylindrical core particularly for optical cable Oct. 22, 1985
4548570 Extrusion apparatus for producing thermoplastic pipe Oct. 22, 1985
4547142 Process and apparatus for producing plastic pipe Oct. 15, 1985
4541793 Extruder nozzle and a method for producing plastic products Sep. 17, 1985
4521368 Method of making internally cross-ribbed plastics material structure Jun. 4, 1985
4518343 Extrusion die May. 21, 1985
4512943 Extrusion process for producing thermoplastic pipe Apr. 23, 1985
4495022 Extrusion method and apparatus Jan. 22, 1985
4483812 Valve plate and feedblock design for co-extrusion apparatus and co-extrusion process using same Nov. 20, 1984
4480976 Adjustable sliding mold for continuous casting installations Nov. 6, 1984
4479768 Sealable discharge die for thermoplastic Oct. 30, 1984
4474545 Device for manufacturing multicolored marble soaps, from a base paste and one or more liquid pigments Oct. 2, 1984
4472129 Head for extrusion of a tubular parison formed of at least one layer of material Sep. 18, 1984
4470790 Adjustable extrusion die assembly Sep. 11, 1984
4468365 Extrusion dies for thin wall substrates Aug. 28, 1984
4468366 Baffled laminated extrusion dies Aug. 28, 1984
4464318 Method of controlling the film thickness at a blown film installation Aug. 7, 1984
4464104 Adjustable ring nozzle for extruding synthetic-resin tubing Aug. 7, 1984
4455133 Extruder coating die Jun. 19, 1984
4450131 Zero runout counter-rotating film extruder May. 22, 1984
4444702 Method and apparatus for producing extruded sections of thermoplastic material Apr. 24, 1984
4439125 Adjustable die mechanism Mar. 27, 1984
4435359 Apparatus and method for fabricating tubes from powder Mar. 6, 1984
4432718 Extrusion head Feb. 21, 1984
4430282 Method for the extrusion of tetrafluoroethylene polymer tubes Feb. 7, 1984
4424178 Procedure and device for production of a preform of thermoplastic synthetic material by means of extrusion Jan. 3, 1984
4422838 Extrusion head for use in blow molding machine Dec. 27, 1983
4422839 Exit die Dec. 27, 1983
4420451 Method for film extrusion comprising rotary die parts Dec. 13, 1983
4419315 Extruded fin-type weatherstrip Dec. 6, 1983
4411614 Removable contoured insert for an extrusion die Oct. 25, 1983
4403934 Coextrusion die Sep. 13, 1983
4397628 Extrusion cylinder assembly Aug. 9, 1983
4395210 Apparatus for manufacture of turbulence member made of synthetic resin Jul. 26, 1983
4394116 Mandrel adjustment system in a plastic resin blow molding machine Jul. 19, 1983
4382766 Apparatus for controlling wall thickness in extruded tubular synthetic resin blank May. 10, 1983
4381184 Extruder apparatus Apr. 26, 1983
4368016 Apparatus for feeding a candy filling forced out of a conveyor into a rod forming apparatus Jan. 11, 1983
4368026 Centering device for shaping tools of extrusion presses Jan. 11, 1983
4362683 Apparatus and method for producing a continuous nib rod for a writing instrument Dec. 7, 1982
4362496 Apparatus for making plastic articles Dec. 7, 1982
4361530 Method of and apparatus for shaping a strand during extrusion Nov. 30, 1982
4358418 Method and apparatus for making compressed composite bodies of plant particles and binder Nov. 9, 1982
4339403 Method of controlling the film thickness at a blown film extruder installation Jul. 13, 1982
4339404 Method of controlling the film thickness at a blown film installation Jul. 13, 1982
4338273 Process for the production of alveolar modules Jul. 6, 1982

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