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Class Information
Number: 366/158.2
Name: Agitating > Having specified feed means > Agitation of material in feeder or supply reservoir > Rotatable impeller > Screw conveyor > Varying diameter screw or shank
Description: Subject matter wherein the helical blade varies in diameter along its length or the blade surrounds and is mounted on a central shank that varies in diameter.










Patents under this class:

Patent Number Title Of Patent Date Issued
6719448 Method and apparatus for the simultaneous production of differently characterized extrudates Apr. 13, 2004
5570953 Mud-mixing machine for drywall texturing and other applications Nov. 5, 1996
5558433 Conical tiltable auger apparatus for continuously feeding extrusion and/or rolling machines with viscous material. Sep. 24, 1996
5017124 Biomass briquetter May. 21, 1991
4907891 Feed device for a continuous feed mixer Mar. 13, 1990
4844619 Sampling mechanism for a meat mixing machine Jul. 4, 1989
4759633 Apparatus and process for metering and mixing two different materials that are pasty or of low to high viscosity Jul. 26, 1988
4708268 Method and apparatus for the accurate volumetric feeding of materials Nov. 24, 1987
4695167 Apparatus for mixing and pumping slurry Sep. 22, 1987
4491420 Apparatus for mixing syrup with feed Jan. 1, 1985
4473299 Gluten producing system Sep. 25, 1984
4432499 Portable feed grinder-mixer Feb. 21, 1984
4312265 Screw for extruding a food mash Jan. 26, 1982
4288288 Apparatus for mixing chemicals into pulp at a refiner inlet Sep. 8, 1981
4231664 Method and apparatus for combining high speed horizontal and high speed vertical continuous mixing of chemically bonded foundry sand Nov. 4, 1980
4223811 Fluid metering, mixing and dispensing machine Sep. 23, 1980
4155655 Apparatus for additive feeding May. 22, 1979
4093507 Method of liquid treating cellulose fibres with elastic pressure shocks Jun. 6, 1978
4068831 Apparatus for the production of foam materials containing a filler material Jan. 17, 1978
4057225 Screw feeder for granular material Nov. 8, 1977
4026528 Feed material mixing apparatus May. 31, 1977
4026529 Feed material mixing apparatus May. 31, 1977
4000884 Extruder screw Jan. 4, 1977
3997146 Material advancing means for a grinder-mixer Dec. 14, 1976
3949904 Epoxy gun Apr. 13, 1976











 
 
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