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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
4728376 Explosive composition and method Mar. 1, 1988
4728367 Extrusion method and apparatus for acid treatment of cellulosic materials Mar. 1, 1988
4728279 Extrusion head including a sealing mechanism for a filter changing device Mar. 1, 1988
4725221 Improved machine for continuously producing an element of a separable fastener Feb. 16, 1988
4720365 Manufacture of detergent bars Jan. 19, 1988
4714423 Evacuating device for plunger molding apparatus Dec. 22, 1987
4714422 Rotary plasticator screw injection machine Dec. 22, 1987
4708055 Apparatus for continuously processing fish flesh Nov. 24, 1987
4699047 Paste spreader apparatus for shredded wheat Oct. 13, 1987
4697505 Apparatus for increasing the visibility of discrete morsels contained within a baked food product Oct. 6, 1987
4695242 Plunger molding machine having blank loading device Sep. 22, 1987
4693677 Flat die neck-in control device Sep. 15, 1987
4685875 Pressure relief device for extrusion apparatus Aug. 11, 1987
4682510 High torque drive means for two closely spaced shafts which are also subjected to strong axial thrusts and application thereof to a double screw extruder Jul. 28, 1987
4681524 Extrusion device Jul. 21, 1987
4669275 Soft ice cream maker Jun. 2, 1987
4669967 Apparatus for quantitatively extruding food material Jun. 2, 1987
4668561 Confection mixing, chopping and extruding apparatus May. 26, 1987
4659303 Apparatus for extruding dough as used in producing crisp breads Apr. 21, 1987
4654150 Apparatus and method for removing combustibles from drill cuttings Mar. 31, 1987
4642040 Extruder drivingly connected to gear pump Feb. 10, 1987
4632279 Manually portable container Dec. 30, 1986
4629593 Process for producing polycrystalline, translucent sintered tubes Dec. 16, 1986
4620838 Cheese shredder Nov. 4, 1986
4619189 Apparatus for manufacturing boiled noodles Oct. 28, 1986
4617089 Apparatus for discharging high viscosity media in chemical engineering Oct. 14, 1986
4614489 Simultaneous extrusion of multiple streams of a fibrous food product Sep. 30, 1986
4611979 Process and apparatus for extrusion of composite structural members Sep. 16, 1986
4609340 Accumulator head with diverter sleeve Sep. 2, 1986
4600311 Material-processing screw machine Jul. 15, 1986
4591323 Extruder and calibrating apparatus for making ribbed or grooved pipe May. 27, 1986
4587128 Process for making a snack food product May. 6, 1986
4583934 Extruder for a fluid material Apr. 22, 1986
4565510 Double extruder for the production of a two-layer tubular extruded product Jan. 21, 1986
4565512 RAM Extruders Jan. 21, 1986
4564349 Extruder assembly for extruding water-curable silane modified polymers Jan. 14, 1986
4555407 Continuous chewing gum method Nov. 26, 1985
4549915 Method and apparatus for providing foaming thermoplastic compositions Oct. 29, 1985
4542686 Method and apparatus for making a marbled pet food Sep. 24, 1985
4533310 Ice making apparatus Aug. 6, 1985
4531308 Apparatus for conditioning hygroscopic plastic material Jul. 30, 1985
4527899 Processing shaft for machines for extruding, kneading, dispersing, mixing or homogenizing, in particular, plastics materials Jul. 9, 1985
4524081 Method for making a marbled pet food Jun. 18, 1985
4514163 Synthetic resin extruding means Apr. 30, 1985
4511320 Extruder with a cassette filter for molten plastic material Apr. 16, 1985
4507073 Web manufacturing apparatus Mar. 26, 1985
4501542 Internal tube support for co-extrusion stuffing tube assembly Feb. 26, 1985
4498855 Apparatus for the treatment of animal excrements and sewage sludges Feb. 12, 1985
4496510 Activity toy Jan. 29, 1985
4486163 Nozzle for extruding a laminated food product Dec. 4, 1984

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