Assignee
FARREL CORP
US26 patents
Top patents by PatentIndex Score
US5487602AJan 30, 1996
Multi-screw, extrusion-compounding machine with modular mixing elements
FARREL CORP68 citations91
US4640672AFeb 3, 1987
Modular extruder barrel construction
FARREL CORP39 citations91
US5382089AJan 17, 1995
Convenient access for clean-out and maintenance of mixing chamber and both rotors in two-rotor continuous mixers for plastic materials
FARREL CORP20 citations90
US5267788ADec 7, 1993
Multi-screw, continuous mixing and kneading machine with polygonal kneading elements for plasticizable compounds
FARREL CORP40 citations89
US5180225AJan 19, 1993
Rotor zone cooling apparatus for rotors in continuous mixers of plastic materials
FARREL CORP29 citations89
US4834543AMay 30, 1989
Optimized four-wing, non-intermeshing rotors for synchronous drive at optimum phase relation in internal batch mixing machines
FARREL CORP33 citations89
US4744668AMay 17, 1988
Internal batch mixing machines with non-intermeshing rotors of increased performance
FARREL CORP47 citations89
US4626111ADec 2, 1986
Self-compensating anti-friction bearing clearance device
FARREL CORP41 citations89
US5480252AJan 2, 1996
Coupling mechanism for quickly axially aligning rotor to journals
FARREL CORP26 citations85
US4830506AMay 16, 1989
Control system for ram fed mixing machine
FARREL CORP34 citations85
US7404664B2Jul 29, 2008
Keel type ram for use in internal batch mixers with tangential rotors
FARREL CORP21 citations82
US4714350ADec 22, 1987
Two-wing non-intermeshing rotors of increased performance for use in internal batch mixing machines
FARREL CORP24 citations79
US4893936AJan 16, 1990
Mixing machine with non-intermeshing pair of rotors driven solely at the same rotor speed in opposite directions and having a predetermined rotational alignment relationship between the two counter-rotating rotors
FARREL CORP22 citations77
US6494607B2Dec 17, 2002
Four wing, non-intermeshing rotors for synchronous drive to provide improved dispersive and distributive mixing in internal batch mixers
FARREL CORP19 citations74
US4720254AJan 19, 1988
Screw extruders
FARREL CORP14 citations73
US5526566AJun 18, 1996
Method of making rotors for two-rotor continuous mixers and method of assembly
FARREL CORP6 citations71
US5273356ADec 28, 1993
Rotor zone cooling method and apparatus for rotors in continuous mixers of plastic materials
FARREL CORP19 citations70
US5261740ANov 16, 1993
One-piece cylindrical extruder barrel assembled with eccentric converging hopper for receiving molten plastic materials
FARREL CORP10 citations68
US5259671ANov 9, 1993
Greased journal bearing assemblies with thermal isolation and cooling in continuous mixers of plastic materials
FARREL CORP14 citations66
US4714422ADec 22, 1987
Rotary plasticator screw injection machine
FARREL CORP11 citations66
US5415492AMay 16, 1995
Coupling mechanism for quickly axially aligning rotor to journals
FARREL CORP5 citations61
US4711581ADec 8, 1987
Rotary processor for plastic and polymeric materials providing surge compensation
FARREL CORP2 citations60
US5259688ANov 9, 1993
Quick-disconnect couplings for three-piece rotors in continuous mixers for plastic materials
FARREL CORP2 citations59
US5143734ASep 1, 1992
Adjustable converging extruder hopper
FARREL CORP5 citations56
US4645418AFeb 24, 1987
Fluid pump
FARREL CORP4 citations56
US9709172B2Jul 18, 2017
Rotor shaft seal assembly
FARREL CORP0 citations21