Farrel Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 438
 
  
 
B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS 423
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 155
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS149

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9709172 Rotor shaft seal assemblyDec 02, 13Jul 18, 17[F16J]
7404664 Keel type ram for use in internal batch mixers with tangential rotorsJan 31, 06Jul 29, 08[B29B]
6494607 Four wing, non-intermeshing rotors for synchronous drive to provide improved dispersive and distributive mixing in internal batch mixersMay 04, 01Dec 17, 02[B29B]
6402360 Internal batch mixing machines and rotorsMar 25, 99Jun 11, 02[B01F]
5526566 Method of making rotors for two-rotor continuous mixers and method of assemblyJan 12, 95Jun 18, 96[B23P]
5487602 Multi-screw, extrusion-compounding machine with modular mixing elementsJun 03, 94Jan 30, 96[B29B]
5382089 Convenient access for clean-out and maintenance of mixing chamber and both rotors in two-rotor continuous mixers for plastic materialsJun 07, 91Jan 17, 95[B29B]
5267788 Multi-screw, continuous mixing and kneading machine with polygonal kneading elements for plasticizable compoundsMar 23, 92Dec 07, 93[B01F]
5259671 Greased journal bearing assemblies with thermal isolation and cooling in continuous mixers of plastic materialsJun 07, 91Nov 09, 93[B01F]
5180225 Rotor zone cooling apparatus for rotors in continuous mixers of plastic materialsJun 07, 91Jan 19, 93[B01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0239,866 Keel type ram for use in internal batch mixers with tangential rotorsAbandonedJun 06, 08Oct 02, 08[B29B]
5480252 Coupling mechanism for quickly axially aligning rotor to journalsExpiredFeb 14, 95Jan 02, 96[F16B, F16C, B01F]
5415492 Coupling mechanism for quickly axially aligning rotor to journalsExpiredJul 02, 93May 16, 95[F16B, F16C, B01F]
5273356 Rotor zone cooling method and apparatus for rotors in continuous mixers of plastic materialsExpiredDec 23, 92Dec 28, 93[B01F]
5261740 One-piece cylindrical extruder barrel assembled with eccentric converging hopper for receiving molten plastic materialsExpiredJun 06, 91Nov 16, 93[B01F]
5259688 Quick-disconnect couplings for three-piece rotors in continuous mixers for plastic materialsExpiredJun 07, 91Nov 09, 93[F16B]
5143734 Adjustable converging extruder hopperExpiredJun 06, 91Sep 01, 92[B29C]
4893936 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 rotorsExpiredMay 16, 86Jan 16, 90[B29B, B01F]
4871260 Rotary processor apparatus and method for extensive and dispersive mixingExpiredSep 15, 87Oct 03, 89[B01F]
4834543 Optimized four-wing, non-intermeshing rotors for synchronous drive at optimum phase relation in internal batch mixing machinesExpiredApr 12, 88May 30, 89[B28C, B29B]
4830506 Control system for ram fed mixing machineExpiredMay 21, 86May 16, 89[B01F]
4744668 Internal batch mixing machines with non-intermeshing rotors of increased performanceExpiredOct 14, 86May 17, 88[B01F]
4720254 Screw extrudersExpiredJul 02, 86Jan 19, 88[B29C]
4714350 Two-wing non-intermeshing rotors of increased performance for use in internal batch mixing machinesExpiredOct 31, 86Dec 22, 87[B29B, B01F]
4714422 Rotary plasticator screw injection machineExpiredDec 12, 85Dec 22, 87[B29C]
4711581 Rotary processor for plastic and polymeric materials providing surge compensationExpiredMar 04, 87Dec 08, 87[B29C]
4707139 Control system and method for continuous mixer with moving surface discharge deviceExpiredNov 22, 85Nov 17, 87[B28C]
4645418 Fluid pumpExpiredFeb 08, 85Feb 24, 87[B29B, F04D]
4640672 Modular extruder barrel constructionExpiredJul 03, 85Feb 03, 87[B29B]
4626111 Self-compensating anti-friction bearing clearance deviceExpiredJul 25, 85Dec 02, 86[F16C]

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