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Class Information
Number: 366/88
Name: Agitating > Rubber or heavy plastic working > Stirrer is through-pass screw conveyor > Including sections of different pitch
Description: Subject matter wherein the spacing of thread or helical ribbon on a portion of said conveyor differs from the spacing of said thread or said helical ribbon on another portion.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
5437826 Extrusion method Aug. 1, 1995
5421650 Mixing machinery of the transfermix type Jun. 6, 1995
5419634 Apparatus for filtering and extruding synthetic plastic scrap material May. 30, 1995
5415354 Solid state shear extrusion pulverization May. 16, 1995
5413475 Serial two-stage extruder May. 9, 1995
5397065 Solid state shear extrusion pulverization Mar. 14, 1995
5395055 Solid state shear extrusion pulverization Mar. 7, 1995
5382089 Convenient access for clean-out and maintenance of mixing chamber and both rotors in two-rotor continuous mixers for plastic materials Jan. 17, 1995
5356281 Screw-type resin injection apparatus for injection molding Oct. 18, 1994
5332309 Reactive component mixing with metered dry filler Jul. 26, 1994
5318358 Screw kneader for plastic material having a controlling mixing section Jun. 7, 1994
5304051 Plasticising unit for a screw injection moulding machine having improved volume adjustment means Apr. 19, 1994
5265955 Machine for the extrusion of thermoplastic polymers and the like comprising an internal mixer Nov. 30, 1993
5244373 Extruder for poorly miscible extrudates Sep. 14, 1993
5217303 Millstone extrusion apparatus Jun. 8, 1993
5215764 Extruder mixing screw Jun. 1, 1993
5158725 Continuous mixing of elastomeric compounds Oct. 27, 1992
5156790 Method for extruding ethylene polymers Oct. 20, 1992
5153009 Extrusion device Oct. 6, 1992
5151026 Apparatus for removing liquids from solids Sep. 29, 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
5145251 Extruder having degree-of-kneading adjusting device Sep. 8, 1992
5145352 Pin transfer extruder Sep. 8, 1992
5141326 Barrier screw Aug. 25, 1992
5141426 Degassing extruder Aug. 25, 1992
5130070 Method of reverse degassing an extrusion melt and an extrusion device therefor Jul. 14, 1992
5088914 Double flighted extrusion screw Feb. 18, 1992
5044489 Feed screw Sep. 3, 1991
5044759 Mixing process and screw extruders for carrying out the same Sep. 3, 1991
4981364 Extrusion apparatus Jan. 1, 1991
4957675 Method and apparatus for preparing caseinates Sep. 18, 1990
4944906 Methods of injection molding and extruding wet hygroscopic ionomers Jul. 31, 1990
4901635 Apparatus and method for the continuous extrusion and partial deliquefaction of oleaginous materials Feb. 20, 1990
4896969 Method and apparatus for melting and conveying plasticated material Jan. 30, 1990
4875847 Twin-screw extruder having respective conical nose screw sections Oct. 24, 1989
4867927 Process of producing thermplastic resin sheet and the like and molding screw therefor Sep. 19, 1989
4859069 Extrusion apparatus Aug. 22, 1989
4854847 Tortilla dough forming machine Aug. 8, 1989
4840492 Rotational screw for mixing Jun. 20, 1989
4834913 Apparatus and method for forming finely divided dry materials from wet materials having a tendency to form lumps May. 30, 1989
4779989 Transfer mixer assembly for use with an extruder screw of a polymer extruder or the like Oct. 25, 1988
4776784 Extruder Oct. 11, 1988
4770539 Barrier screw Sep. 13, 1988
4744669 Mixing and extruding apparatus and methods May. 17, 1988
4729666 Screw for molding thermoplastic resin having a stress relaxation section Mar. 8, 1988
4663103 Apparatus and method of extrusion May. 5, 1987
4642041 Extruder screw for minimizing the opposing pressure flow Feb. 10, 1987
4632795 Method and apparatus for extrusion processing of cellulose bearing materials Dec. 30, 1986
4600311 Material-processing screw machine Jul. 15, 1986
4569595 Screw extruder for plastics Feb. 11, 1986

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