Feeds Screws, Extruder Patents

4770539	Barrier screw
5628560	Double-screw extruder
4405239	Energy efficient extruder screw
5931578	Extruder and extrusion screw therefor
5823668	Extruder and extrusion screw therefor
5215764	Extruder mixing screw
6017145	Extruder screw
4798473	Extruder screw
4341474	Extruder screw
4128341	Extruder screw
4015833	Extruder screw
4000884	Extruder screw
4786181	Extruder screw and method for extruding liquid crystalline polymers
4994223	Extruder screw and method for the extrusion of thermally sensitive thermoplastic materials
4558954	Extruder screw and positive displacement wave pump assembly
5599097	Extruder screw for plastic extruders
5297948	Extruder screw for use in foam plastic extruder
6139179	Extruder screw having multi-channeled barrier section
4798472	Extruder screw with balanced flights of different functional sections
6155705	Extruder screw with coatings of different hardnesses thereon
5599098	Extruder screw with multiple flighting
4015832	Extruder screws
4054403	Extruder with dual flighted extrusion screw
4712992	Extruder with screw having core portion of polygonal cross-section
4277182	Extruder with short cycle multichannel wave screw
4639143	Extrusion screw
5698235	Extrusion screw for extruder
5020915	Extrusion screw for thermoplastic matter
5342125	Feedscrew for injection molding and extrusion
6062718	hermoplastic foam extrusion assembly with an extrusion screw including a circulation channel defined therein
4951387	Installation for mounting and removing screws of an extrusion machine
4839955	Method for mounting and removing screws of an extrusion machine
5035509	Multi-channel extrusion screw with a zig-zag undercut barrier
4134714	Multi-stage continuous plastic extrusion apparatus, and extrusion screw
6022133	Multiple-screw extruder
5573331	Multiple-stage screw for blending materials
4964730	Plasticating extruder screw
4330214	Plasticizing screw
5816698	Screw and plasticating apparatus and method
5653534	Screw apparatus and method for supplying reinforcing fiber-containing molten resin using the apparatus
5279501	Screw Conveyor
5573332	Screw element for a screw-like extrusion machine
4678339	Screw extruder
4538917	Screw Extruder
4089510	Screw extruder
5714187	Screw extruder and process for controlling the quality of feedstuff products
4657449	Screw extruder apparatus adapted for mixing additive fluids
4222729	Screw extruder for thermoplastic synthetic foams
5932159	Screw extruder with improved dispersive mixing
5909958	Screw extruder with independently adjustable groove depth
5480227	Screw extruder with shear-controlling diagonally extending pins
4462692	Screw extruders
6102560	Screw tip for closing a temperature-control bore of an extruder screw
4863364	Screw tip of an extruder screw
6051267	Screw-extrusion of chocolate and other fat-containing confectionery materials
5655835	Single screw extruder method and apparatus
3946998	Single worm extruder
4696575	Single-screw extruder for producing thermoplastic and elastomeric products
6015227	Thermoplastic foam extrusion screw with circulation channels
5288223	Three stage intermixing feed screw for polymers
5375992	Triple channel wave screw
5219590	Triple channel wave screw
3954366	Two-stage single screw extrusion apparatus