US Patent Class 55
GAS SEPARATION-- Main Headings




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Current as of: June, 1999
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CLASS NOTES
282  DF  WITH NONLIQUID CLEANING MEANS FOR SEPARATING MEDIA {13}
306  DF  AIRCRAFT ANTI-INGESTION MEANS (E.G., AIRCRAFT DEBRIS GUARD)
307  DF  FILTER OR APERTURED DEFLECTOR UNIT DISCONTINUOUS ACROSS GAS FLOW WITHIN FLOW CONDUIT {1}
309  DF  WITH SEPARATING MEDIA BYPASS OR SYSTEM GAS PRESSURE RELIEF (E.G., RUPTURABLE OR DEFORMABLE) {3}
315  DF  PLURAL SERIAL BASICALLY DIVERSE SEPARATING MEDIA {3}
338  DF  WITH RECYCLE MEANS {2}
341.1  DF  MULTIPLE BAG TYPE FILTERS IN CHAMBER {5}
342  DF  MULTIPLE SEPARATORS, EACH WITH DISCRETE AND LONGITUDINALLY CONFINED GAS INLET OR OUTLET FLOW PATH {5}
351  DF  WITH MEANS FOR ADVANCING CLEAN PORTIONS OF CONTINUOUS OR INDEFINITE LENGTH SEPARATING MEDIA INTO GAS STREAM {3}
355  DF  WITH LIQUID TRAP SEAL OR VALVE
356  DF  WITH MEANS FACILITATING TRANSPORTABILITY OR HANDLING OF APPARATUS {1}
358  DF  WITH GROUND SUPPORT MEANS (NONFLOW CONDUCTING)
359  DF  WITH PORTION OF COVER REMOVABLE
360  DF  WITH ELECTRICAL GROUNDING MEANS
361  DF  FLEXIBLE OR COLLAPSIBLE BAG TYPE {14}
383  DF  WITH REMOTE FAN OR PUMP AND UNCONFINED FLOW TO SEPARATOR
385.1  DF  COMBINED OR CONVERTIBLE {7}
391  DF  RESTRICTED ANNULAR MIXTURE INLET TO COLLECTOR ZONE AROUND GAS OUTLET CONDUIT ATTACHED BAFFLE
392  DF  WITH GUIDE MEANS EFFECTING REMOVAL OF CONSTITUENT LAYER OUT OF GAS STREAM {4}
400  DF  MOUNTED OR SUPPORTED FOR CONTINUOUS MOTION {3}
410  DF  WITH SEPARATED GAS OUTFLOW CONTROL (E.G., APERTURED CONDUIT) {4}
418  DF  WITH INFLOW GAS CONTROL OR DISTRIBUTION {3}
421  DF  WITH MEANS FOR LIQUID SEPARATION
422  DF  SEPARATING MEDIA ADJUSTABLE TO VARIOUS POSITIONS OF USE OR TO NONUSE
423  DF  MEANS WITHIN GAS STREAM FOR CONDUCTING CONCENTRATE TO COLLECTOR
424  DF  WITH CONCENTRATE BACKFLOW OR RE-ENTRAINMENT PREVENTING MEANS {2}
428  DF  RESIDUE ACCESS, HANDLING OR REMOVING MEANS {4}
434  DF  DEFLECTOR {10}
466  DF  WITH SEPARATED NONGASEOUS MATERIAL CONDUCTING OR TREATING MEANS
467  DF  WITH GAS FLOW EFFECTING MEANS {7}
474  DF  WITH PARTICULATE SOLIDS MOVEMENT DURING USE OR AGITATING MEANS THEREFOR
475  DF  WITH MEANS ADJUSTABLE TO CONTROL COMPACTNESS OF SEPARATING MEDIA
476  DF  WITH MEANS INTRODUCING GAS INTO MIDST OF SEPARATING MEDIA
477  DF  STRANDS OR BRISTLES WITH UNSUPPORTED OR FREE EXTREMITIES (E.G., BRUSH TYPE)
478  DF  WITH SEPARATE FLOW LINE ACCESS MEANS OR FILTER MEDIA PASSAGE MEANS OFFSET TO FLOW PATH {3}
482  DF  TWO OR MORE SEPARATORS (E.G., SPACED FILTERS IN FLOW LINE OR CASING) {5}
490  DF  WITH MEANS SECURING OR RETAINING SEPARATING MEDIA {7}
520  DF  SPIRAL FILTER MEDIA
521  DF  ZIGZAG, CORRUGATED, OR CONICAL
522  DF  SPECIFIC MEDIA MATERIAL {4}
529  DF  MISCELLANEOUS (E.G., SHAPES)
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DIGESTS
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DIG 1  DF  Graduated electrostatic field
DIG 2  DF  Vacuum cleaner bags
DIG 3  DF  Vacuum cleaner
DIG 5  DF  Methods of making filter
DIG 6  DF  Magnetic couplings
DIG 7  DF  Black liquor treatment
DIG 8  DF  Built-in vacuum cleaners
DIG 9  DF  Radioactive filters
DIG 10  DF  Residue burned
DIG 12  DF  Pocket type filter
DIG 13  DF  Polyurethane filters
DIG 14  DF  Inertia separator
DIG 15  DF  Cold traps
DIG 17  DF  Compressed air water removal
DIG 18  DF  Work bench
DIG 19  DF  Crankcase ventilation
DIG 20  DF  Spark arrester
DIG 21  DF  Silencer cleaner
DIG 23  DF  Steam separators
DIG 24  DF  Viscous coated filter
DIG 25  DF  Agglomerators
DIG 26  DF  Bag coupling
DIG 27  DF  Cleaners, liquid
DIG 28  DF  Carburetor attached
DIG 29  DF  Air curtains
DIG 30  DF  Exhaust treatment
DIG 31  DF  Filter frame
DIG 32  DF  Gaseous fluid conveying
DIG 33  DF  Gas mask canister
DIG 34  DF  Indicator and controllers
DIG 35  DF  Respirators and register filters
DIG 36  DF  Kitchen hoods
DIG 37  DF  Louvers
DIG 38  DF  Tubular collector electrode
DIG 39  DF  Electrets separator
DIG 42  DF  Foam filter materials
DIG 43  DF  Knitted filter mediums
DIG 44  DF  Pile and pile-type filter mediums
DIG 45  DF  Woven filter mediums
DIG 46  DF  Spray booths