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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
4480702 Method and apparatus for drilling oil well and treating drilling mud Nov. 6, 1984
4470793 Extruder for extruding pasta in the form of a thin continuous strip Sep. 11, 1984
4470788 Apparatus for extruding food pastes Sep. 11, 1984
4456450 Manual extruder for shaping pasta or similar products Jun. 26, 1984
4453909 Apparatus for making soap with perfumed insert Jun. 12, 1984
4450131 Zero runout counter-rotating film extruder May. 22, 1984
4445838 Apparatus for extruding a comestible May. 1, 1984
4436502 Auger feed arrangement for cubing machine Mar. 13, 1984
4435348 Apparatus and method for making flexible load-carrying cord Mar. 6, 1984
4435359 Apparatus and method for fabricating tubes from powder Mar. 6, 1984
4430282 Method for the extrusion of tetrafluoroethylene polymer tubes Feb. 7, 1984
4422992 Extruder process for preparation of carbon fiber reinforced fluoropolymer compositions Dec. 27, 1983
4415323 Pasta-making kitchen appliance with a drying arrangement Nov. 15, 1983
4413109 Embossed films obtained from ethylene-propylene copolymers, and a process and apparatus for manufacturing the films Nov. 1, 1983
4409173 Process and apparatus for the manufacture of objects of crystalline polystyrene Oct. 11, 1983
4407647 Soap plodder for elimination of wet cracking Oct. 4, 1983
4397624 Device for rendering a cable longitudinally watertight Aug. 9, 1983
4397628 Extrusion cylinder assembly Aug. 9, 1983
4367064 Machine for the production of home-made pasta and dough Jan. 4, 1983
4360332 Noodle machine Nov. 23, 1982
4358418 Method and apparatus for making compressed composite bodies of plant particles and binder Nov. 9, 1982
4358468 Process for preparing a marbled meat pet food Nov. 9, 1982
4354814 Extruder with a sheet extrusion head and an associated calender Oct. 19, 1982
4341474 Extruder screw Jul. 27, 1982
4341509 Crosshead extrusion die Jul. 27, 1982
4336012 Coextrusion device Jun. 22, 1982
4334845 Machine for producing rolls of bakery products Jun. 15, 1982
4333789 Apparatus for manifolding multiple passage solar panel Jun. 8, 1982
4332541 Filtering arrangement for thermoplastics materials Jun. 1, 1982
4330242 Machine for extruding hollow cored concrete sections May. 18, 1982
4322202 Dough extruder and sheet spreader apparatus Mar. 30, 1982
4319871 Apparatus for extruding a thermoplastic material Mar. 16, 1982
4310484 Method for extruding molten narrow molecular weight distribution, linear, ethylene copolymers Jan. 12, 1982
4304539 Extruder with roller die Dec. 8, 1981
4302170 Accumulator head having a piston with a self-wiping face Nov. 24, 1981
4299789 Roller die extruder and method of use Nov. 10, 1981
4293979 Forming press for sausage and the like Oct. 13, 1981
4285655 Coat hanger die Aug. 25, 1981
4266919 Ram-extrusion apparatus for non-melt fabricable polymeric resins May. 12, 1981
4267146 Method for reducing melt fracture during extrusion of ethylene polymers May. 12, 1981
4251202 Molding die stem with sleeve Feb. 17, 1981
4249877 High-speed direct-drive extruder Feb. 10, 1981
4234531 Method for extruding a cross-linked material Nov. 18, 1980
4220029 Continuous extrusion machine and method of continuous extrusion Sep. 2, 1980
4217083 Extrusion head Aug. 12, 1980
4217086 Extruder with sealing die for abrasive material Aug. 12, 1980
4217319 Process for producing polyolefin foams Aug. 12, 1980
4199311 Spring biased extrusion device for surface patterning Apr. 22, 1980
4198197 Device for pelletizing and dosed feeding-out of fodder with varying degree of moisture Apr. 15, 1980
4194841 Method and apparatus for processing polymeric materials Mar. 25, 1980

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