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Class Information
Number: 425/376.1
Name: Plastic article or earthenware shaping or treating: apparatus > Stock pressurizing means operably associated with downstream shaping orifice
Description: Apparatus including means defining a shaping orifice (e.g., a nozzle) combined with fluent stock material handling means comprising means ahead of the orifice to increase pressure on the material to force flow through the orifice.

Sub-classes under this class:

Class Number Class Name Patents
425/381.2 Centripetal elastic melt extruder type 46
425/382.3 Including additional rotating means downstream of the primary pressurizing means 281
425/380 Including auxiliary shaping means (e.g., mandrel, etc.) associated with molding orifice 427
425/378.1 Including heating or cooling means 355
425/377 Including product handling means 272
425/382.4 Including restriction upstream of shaping orifice and downstream of primary pressurizing means 284
425/382R Plural orifices 217

Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
5670106 Method for making organically based polymer/thermoplastic products and apparatus Sep. 23, 1997
5650180 Dispenser for paste-type material Jul. 22, 1997
5614276 Extrusion of materials Mar. 25, 1997
5607703 Roller head extruder unit Mar. 4, 1997
5603883 Process of and apparatus for making celluose products Feb. 18, 1997
5558886 Extrusion apparatus for the preparation of instant fresh corn dough or masa Sep. 24, 1996
5558892 Method and apparatus for making churros Sep. 24, 1996
5547363 Nozzle for spinning pitch-based carbon fibers Aug. 20, 1996
5499575 Food loaf shaping and texturizing rack Mar. 19, 1996
5494426 Vibrating wall surfaces for molding deformable materials Feb. 27, 1996
5489381 Extruder apparatus for separating solids from fluids Feb. 6, 1996
5480541 Extruder apparatus for isolating solids from fluids Jan. 2, 1996
5466143 Dough sheet former with closed loop control Nov. 14, 1995
5449459 Dome shaped extrusion filter support Sep. 12, 1995
5449407 Expansion compensated precision extrusion apparatus Sep. 12, 1995
5409365 Noodle machine Apr. 25, 1995
5354192 Indirect extrusion press Oct. 11, 1994
RE34711 Device for feeding an extrusion head for plastic material Aug. 30, 1994
5320794 Apparatus for and method of manufacture of a textured vinyl post Jun. 14, 1994
5308232 Apparatus for making products from powdered materials May. 3, 1994
5286433 Method and device for pressure balancing of hoses at extruding of two components Feb. 15, 1994
5281427 Process for producing pastry products Jan. 25, 1994
5259746 Extrusion head Nov. 9, 1993
5257924 Plastic tile corrugator Nov. 2, 1993
5252054 Apparatus for producing a dimensionally stable thermoplastic semifinished product Oct. 12, 1993
5249948 Apparatus for the continuous extrusion of solid articles Oct. 5, 1993
5213686 Compression feeder May. 25, 1993
5208050 Mixing orifice extruder May. 4, 1993
5198237 Extrusion die arrangement for attachment to a food grinder Mar. 30, 1993
5186960 Low pressure 3D extrusion Feb. 16, 1993
5183612 Process and apparatus for manufacturing frame with groove for use with panel Feb. 2, 1993
5165941 Extruder apparatus and process for compounding thermoplastic resin and fibres Nov. 24, 1992
5156790 Method for extruding ethylene polymers Oct. 20, 1992
5156715 Apparatus for applying two layers of plastic to a conductor Oct. 20, 1992
5147198 High performance extruder with a constant number of threads in the inlet and outlet regions of a transfer shearing section Sep. 15, 1992
5145352 Pin transfer extruder Sep. 8, 1992
5143734 Adjustable converging extruder hopper Sep. 1, 1992
5141426 Degassing extruder Aug. 25, 1992
5126088 Method for producing an extrusion having a wood grain appearance and an associated apparatus Jun. 30, 1992
5114488 Extrusion method and apparatus for acid treatment of cellulosic materials May. 19, 1992
5110275 Extruder for the preparation of plastic material with the introduction of at least one fibre strand May. 5, 1992
5068069 Method of maintaining the force of a stripper blade on an extruder feed roller constant and an apparatus therefor Nov. 26, 1991
H982 Method for preparing polymeric membranes in-situ and an apparatus for performing this process Nov. 5, 1991
5051222 Method for making extrudable polyvinyl alcohol compositions Sep. 24, 1991
5035593 Pressurized slurry casting machine for producing ceramic articles Jul. 30, 1991
5030082 Extrusion die for thermoplastic resin Jul. 9, 1991
5020698 Ice-cream ejector Jun. 4, 1991
5011396 Quick coupling device for exchanging plasticizing unit of an injection molding machine Apr. 30, 1991
4995802 Apparatus for extruding plastic materials Feb. 26, 1991
4995804 Apparatus for quantitatively extruding food material Feb. 26, 1991

1 2 3 4 5 6 7

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