US Patent Class 55
GAS SEPARATION




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Current as of: June, 1999
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  DF  CLASS NOTES
282  DF  WITH NONLIQUID CLEANING MEANS FOR SEPARATING MEDIA
282.1  DF  .~ Having insulation
282.2  DF  .~ With heating or cooling means
282.3  DF  .~.~ Residue burned
282.4  DF  .~.~ Two confined fluids in indirect contact
282.5  DF  .~.~.~ Heat exchanger is part of separator or is contiguous therewith
283  DF  .~ With automatic control of cleaning means
284  DF  .~ With sequential cleaning of plural units
285  DF  .~.~ Ferris wheel type filter unit arrangement
286  DF  .~.~ With gas flow arresting means
287  DF  .~.~.~ Interconnected with cleaning means
288  DF  .~ Interdependent or interoperated gas flow cutoff or apparatus shutdown and media cleaning
289  DF  .~ Interdigitated comb and separating media
290  DF  .~ For moving indefinite or continuous length separating media
291  DF  .~ Plural diverse cleaning means
292  DF  .~ Sonic type
293  DF  .~ With separating media pneumatically vibrated or flexed
294  DF  .~ Relatively movable pneumatic nozzle (e.g., scanning nozzle)
295  DF  .~ Solid agent cleaning member movingly contacts apparatus
296  DF  .~.~ Agent has defined traversing motion relative to separating media
297  DF  .~.~.~ With motion effecting means interrelated with separating operation
298  DF  .~.~.~.~ Gas flow actuates member
299  DF  .~.~.~ With resulting flexing or distortion of resilient or collapsible separating media
300  DF  .~.~ Vibrating, jarring, or rapping means
301  DF  .~ Cohesive filter media cleaning
302  DF  .~.~ Pneumatic reverse flushing
303  DF  .~.~.~ Draft diverted from one side of filter to other
304  DF  .~.~ Filter manipulation, shaking or flexing for precluding or removing encrustation
305  DF  .~.~.~ Attendant actuated manipulating means
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
308  DF  .~ Multiple members serially spaced in flow conduit
309  DF  WITH SEPARATING MEDIA BYPASS OR SYSTEM GAS PRESSURE RELIEF (E.G., RUPTURABLE OR DEFORMABLE)
309.1  DF  .~ With heating or cooling means
310  DF  .~ Pressure relief means to or from atmosphere
311  DF  .~.~ Relief means is downstream of media (e.g., ambient air bypasses filter)
312  DF  .~ Valved bypass means
313  DF  .~.~ Gas force responsive
314  DF  .~.~ Shunt means for total flow
315  DF  PLURAL SERIAL BASICALLY DIVERSE SEPARATING MEDIA
315.1  DF  .~ With heating or cooling means or having insulation
315.2  DF  .~.~ Heat exchanger is part of separator or is contiguous therewith
317  DF  .~ At least one mounted for continuous motion
318  DF  .~ Plural stages in unitary casing
319  DF  .~.~ Including expansion chamber
320  DF  .~.~ Deflector and fibrous, filamentary, particulate solids, or cohesive sheet filter type
321  DF  .~.~.~ Multiple of one type in series of parallel in flow path
322  DF  .~.~.~.~ Serially spaced with at least one of other type intermediately positioned
323  DF  .~.~.~.~ Filters
324  DF  .~.~.~.~.~ In parallel
325  DF  .~.~.~.~ Serially spaced deflectors
326  DF  .~.~.~.~.~ With connected trough or channel
327  DF  .~.~.~ Filter is most upstream
328  DF  .~.~.~ Movable or movable mounted for adjustment or nonuse
329  DF  .~.~.~ Filamentary brush type or fibrous mass
330  DF  .~.~.~.~ Tubular or annular for radial gas flow
331  DF  .~.~.~ Conical deflector with curved or parabolic radially extending wide downstream end
332  DF  .~.~.~ Cohesive sheet-like filter
333  DF  .~.~.~.~ Multiple contiguous layers or coils with radial gas flow
334  DF  .~.~.~.~ Bag type
335  DF  .~.~.~.~.~ Including imperforate upstream bag end deflector
336  DF  .~.~.~.~ Conical
337  DF  .~.~.~.~ Cyclone or centrifugal whirl type deflector
338  DF  WITH RECYCLE MEANS
338.1  DF  .~ With heating or cooling means
339  DF  .~ For concentrate entrained in effluent gas outlet means
340  DF  .~.~ Return conduit is external of apparatus
341.1  DF  MULTIPLE BAG TYPE FILTERS IN CHAMBER
341.11  DF  .~ With heating or cooling means or having insulation
341.2  DF  .~ Gas flow from inside to outside of filter
341.3  DF  .~.~ Modular compartments
341.4  DF  .~.~ Horizontally mounted filters
341.5  DF  .~ Modular compartments
341.6  DF  .~ Partitioned bag filter chamber
341.7  DF  .~ Horizontally mounted filters
342  DF  MULTIPLE SEPARATORS, EACH WITH DISCRETE AND LONGITUDINALLY CONFINED GAS INLET OR OUTLET FLOW PATH
342.1  DF  .~ With heating or cooling means or having insulation
342.2  DF  .~.~ Heat exchanger is part of separator or is contiguous therewith
343  DF  .~ Combined serial and parallel arrangement
344  DF  .~ With flow equalizing, controlling, or distributing means
345  DF  .~ Centrifugal
346  DF  .~.~ Parallel
347  DF  .~.~.~ Gas inlet and outlet at linearly opposite ends of separating zone
348  DF  .~.~.~ Plural gas inflow openings, slots, or whirl vanes in each separator
349  DF  .~.~.~ Tangential inlet to each separator
350.1  DF  .~ Filters
351  DF  WITH MEANS FOR ADVANCING CLEAN PORTIONS OF CONTINUOUS OR INDEFINITE LENGTH SEPARATING MEDIA INTO GAS STREAM
352  DF  .~ Advancing means initiated by flow, pressure, or pressure differential of gas
353  DF  .~ Multiple distinct units
354  DF  .~ Indefinite or running length
355  DF  WITH LIQUID TRAP SEAL OR VALVE
356  DF  WITH MEANS FACILITATING TRANSPORTABILITY OR HANDLING OF APPARATUS
357  DF  .~ Handle feature for apparatus or part thereof
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
362  DF  .~ With bag ejecting means
363  DF  .~ Toroidal or annular bag
364  DF  .~ Impervious bag with pervious portion
365  DF  .~ Bag carried strain relief means between bag supports
366  DF  .~ With separable nonfiltering residue container
367  DF  .~ Valved, self-closing, or apparatus contained bag closing means
368  DF  .~ Spaced interior inflow path or with means modifying gas flow in bag
369  DF  .~ Closure means other than coupler to flow line for filter or cover bag
370  DF  .~.~ Use position residue removal means
371  DF  .~.~.~ Inner filter bag removal
372  DF  .~ With additional nonbag type filter
373  DF  .~ Housing closure secures bag
374  DF  .~ With flow line coupling means
375  DF  .~.~ Flexible conduit joins line to bag
376  DF  .~.~ Coupling part inseparable from bag
377  DF  .~.~.~ Resilient or expansible
378  DF  .~ With securing or supporting means
379  DF  .~.~ Bag internally supported
380  DF  .~ Nested bags or folded wall with spaced or unsecured faces
381  DF  .~ Seaming, reinforcing or bag structure
382  DF  .~.~ Multi-ply, strata, or laminated
383  DF  WITH REMOTE FAN OR PUMP AND UNCONFINED FLOW TO SEPARATOR
385.1  DF  COMBINED OR CONVERTIBLE
385.2  DF  .~ In environmental air enclosure
385.3  DF  .~ In motor vehicle
385.4  DF  .~ In vented container
385.5  DF  .~ Involving mining or metallurgical apparatus
385.6  DF  .~ Involving communication receiving or transmitting apparatus
385.7  DF  .~ Involving shielding apparatus
385.8  DF  .~ Involving ash tray
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
392.1  DF  .~ With heating or cooling means
393  DF  .~ Movably mounted for adjustment
394  DF  .~ At escape means for heavier constituent
395  DF  .~.~ And separable residue receptacle
396  DF  .~.~ Annular outlet around gas outflow path
397  DF  .~.~ Spaced, overlapped walls
398  DF  .~.~ Plural, angularly spaced
399  DF  .~ Spiral guide
400  DF  MOUNTED OR SUPPORTED FOR CONTINUOUS MOTION
401  DF  .~ Plural distinct separating media or stages
402  DF  .~.~ Overlapping moving separators
403  DF  .~.~ Plural moving separators serially arranged
404  DF  .~ Moved by system fluid in confined flow path
405  DF  .~.~ Fluid flow normal to axis of moving member
406  DF  .~ Differentially deflected system fluid constituents
407  DF  .~.~ Concentrate flow groove, guide, or channel on moving member
408  DF  .~.~ Separated gas conducted axially through rotating member
409  DF  .~.~.~ Hollow shaft
410  DF  WITH SEPARATED GAS OUTFLOW CONTROL (E.G., APERTURED CONDUIT)
410.1  DF  .~ With heating or cooling means
411  DF  .~ Movable gas outlet conduit
412  DF  .~.~ Longitudinal
413  DF  .~ Baffle or flow guide
414  DF  .~.~ Within or downstream of gas outlet conduit
415  DF  .~.~.~ Movable baffle of flow guide
416  DF  .~.~.~ Flow straightener
417  DF  .~ Valve
418  DF  WITH INFLOW GAS CONTROL OR DISTRIBUTION
418.1  DF  .~ With heating or cooling means or having insulation
419  DF  .~ Multiple inlets
420  DF  .~ Check valve
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
425  DF  .~ Closure between separating and collecting zones
426  DF  .~ Baffle intermediate concentrate collector zone and gas outlet conduit
427  DF  .~.~ Adjustably mounted
428  DF  RESIDUE ACCESS, HANDLING OR REMOVING MEANS
428.1  DF  .~ With heating or cooling means
429  DF  .~ Separable collection container
430  DF  .~ With means effecting or assisting discharge of residue (e.g., endless belt)
431  DF  .~.~ Gaseous or liquid
432  DF  .~ With movable or manipulable means controlling escape of residue
433  DF  .~.~ Manually actuated
434  DF  DEFLECTOR
434.1  DF  .~ Having insulation
434.2  DF  .~ With heating or cooling means
434.3  DF  .~.~ Two confined fluids in indirect contact
434.4  DF  .~.~.~ Heat exchanger is part of separator or is contiguous therewith
435  DF  .~ Wear liners or surface characteristics (e.g., anti-erosion)
436  DF  .~ Removably supported deflector surface
437  DF  .~ With gas pump or fan
438  DF  .~.~ Within separator
439  DF  .~.~ Downstream of separator
440  DF  .~ Parallel and continuous nonplanar members (e.g., crimped, corrugated, curved)
441  DF  .~ Concentric, nested conduits with closed and open ends for flow reversal
442  DF  .~ Plural deflectors overlapped and spaced serially in gas flow
443  DF  .~.~ Plural deflectors in row across gas flow
444  DF  .~.~.~ Deflectors in alternate rows aligned (i.e., staggered)
445  DF  .~.~ Deflectors apertured or closely spaced from flow path wall
446  DF  .~.~.~ Space or aperture opposed by solid deflector surface
447  DF  .~ Fixed gas whirler or rotator means
448  DF  .~.~ With outlet gas conduit wall common to surrounding gas inlet or concentrate outlet or collector
449  DF  .~.~.~ Gas inlet and outlet have common wall
450  DF  .~.~.~ With outlet from collector
451  DF  .~.~.~.~ Tangential outlet pipe
452  DF  .~.~ With plural concentrate outlets in arcuate, axially extending whirl chamber wall
453  DF  .~.~ With concentrate outlet means in one of parallel plates mounting spaced whirler vanes
454  DF  .~.~ With tangential concentrate outlet pipe
455  DF  .~.~ Plural nonradial gas passages in peripheral wall (e.g., tuyere)
456  DF  .~.~ Helical vane or baffle within flow conduit
457  DF  .~.~.~ Between gas flow path wall and central core
458  DF  .~.~ Inflow pipe projects within casing
459.1  DF  .~.~ Tangential gas inlet opening in casing
459.2  DF  .~.~.~ Inclined inflow
459.3  DF  .~.~.~ Scroll
459.4  DF  .~.~.~ Inflow nozzle or vane
459.5  DF  .~.~.~ Varying inlet area
460  DF  .~.~.~ With tangential gas outlet
461  DF  .~.~ Continuous confined flow path
462  DF  .~ Impingement baffle
463  DF  .~.~ Conical with apex facing upstream
464  DF  .~.~ Corrugated, ribbed, crimped, or with projections
465  DF  .~.~ Planar
466  DF  WITH SEPARATED NONGASEOUS MATERIAL CONDUCTING OR TREATING MEANS
467  DF  WITH GAS FLOW EFFECTING MEANS
467.1  DF  .~ With heating or cooling means
468  DF  .~ Injector or jet pump type
469  DF  .~ Manual, weight, or traction operated gas pump
470  DF  .~ Plurality of impellers arranged in parallel or performing diverse functions
471  DF  .~ Impeller within or proximate to space encompassed by separating media
472  DF  .~ Upright or multichambered casing
473  DF  .~ Impeller upstream of separating media
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
479  DF  .~ For discrete filter particles
480  DF  .~ Access means is clamping or coupling means for unit filter media
481  DF  .~ Unit transversely slidable through flow path
482  DF  TWO OR MORE SEPARATORS (E.G., SPACED FILTERS IN FLOW LINE OR CASING)
482.1  DF  .~ With heating or cooling means
483  DF  .~ With framework for edge to edge relation
484  DF  .~ Spaced for parallel flow of gas
485  DF  .~ Three or more serially spaced
486  DF  .~ Plies or layers of different characteristics or orientation
487  DF  .~.~ Differing mesh sizes
488  DF  .~.~ Variation in shape or size
489  DF  .~.~ Orientation of elements
490  DF  WITH MEANS SECURING OR RETAINING SEPARATING MEDIA
490.1  DF  .~ With heating or cooling means
490.2  DF  .~.~ Two confined fluids in indirect contact
491  DF  .~ Fastening means pierces or penetrates media
492  DF  .~ Internal frame or support means
493  DF  .~ Hinged or pivoted retainer or clamp on backing frame or in flow line
494  DF  .~ Grid or tray type for bottom support only
495  DF  .~ Unit or cohesive sheet-like media in flow line or frame
496  DF  .~.~ With adjustable connector or size adjusting means
497  DF  .~.~ Edge supporting or securing means for nonplanar sheet form filter (e.g., zigzag)
498  DF  .~.~.~ Spiral or cylindrical
499  DF  .~.~.~ With additional transversely arranged members
500  DF  .~.~ Flexible sheet type maintained in nonplanar configuration
501  DF  .~.~ With additional support means not positively engaged or joined to media (e.g., across face of filter)
502  DF  .~.~ Gasket or sealing means
503  DF  .~.~ Media within joinable or separable flow line sections
504  DF  .~.~ Aligned stop, media and removable retainer
505  DF  .~.~ Flow line end coupling (e.g., pipe end)
506  DF  .~.~.~ Flange or track on flow line for slidably retaining media
507  DF  .~.~.~ Resilient attaching means
508  DF  .~.~ Suspended or supported by bracket or from top of frame
509  DF  .~.~ Distorted media in flow line or resilient retaining means
510  DF  .~.~ Annular unit held between dished or plate-like end members for top and bottom support
511  DF  .~.~ Edge supported or secured only
512  DF  .~ Discrete fibrous or particulate solids
513  DF  .~.~ Resilient securing means
514  DF  .~.~ Fused or bonded to a supporting or backing member
515  DF  .~.~ Foraminous container
516  DF  .~.~ Held between openwork
517  DF  .~.~.~ Between telescoped or nonplanar retainers
518  DF  .~.~.~ Between perforated plates
519  DF  .~.~.~ Between reticulated end closures
520  DF  SPIRAL FILTER MEDIA
521  DF  ZIGZAG, CORRUGATED, OR CONICAL
522  DF  SPECIFIC MEDIA MATERIAL
523  DF  .~ Ceramic or sintered
524  DF  .~ With coating, impregnant, or bonding agent
525  DF  .~ Metal mesh or expanded material
526  DF  .~.~ Wadded or compressed
527  DF  .~ Fibrous or strand form
528  DF  .~.~ Organic (e.g., vegetable)
529  DF  MISCELLANEOUS (E.G., SHAPES)
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DIGESTS
******************************
DIG 1  DD  Graduated electrostatic field
DIG 2  DD  Vacuum cleaner bags
DIG 3  DD  Vacuum cleaner
DIG 5  DD  Methods of making filter
DIG 6  DD  Magnetic couplings
DIG 7  DD  Black liquor treatment
DIG 8  DD  Built-in vacuum cleaners
DIG 9  DD  Radioactive filters
DIG 10  DD  Residue burned
DIG 12  DD  Pocket type filter
DIG 13  DD  Polyurethane filters
DIG 14  DD  Inertia separator
DIG 15  DD  Cold traps
DIG 17  DD  Compressed air water removal
DIG 18  DD  Work bench
DIG 19  DD  Crankcase ventilation
DIG 20  DD  Spark arrester
DIG 21  DD  Silencer cleaner
DIG 23  DD  Steam separators
DIG 24  DD  Viscous coated filter
DIG 25  DD  Agglomerators
DIG 26  DD  Bag coupling
DIG 27  DD  Cleaners, liquid
DIG 28  DD  Carburetor attached
DIG 29  DD  Air curtains
DIG 30  DD  Exhaust treatment
DIG 31  DD  Filter frame
DIG 32  DD  Gaseous fluid conveying
DIG 33  DD  Gas mask canister
DIG 34  DD  Indicator and controllers
DIG 35  DD  Respirators and register filters
DIG 36  DD  Kitchen hoods
DIG 37  DD  Louvers
DIG 38  DD  Tubular collector electrode
DIG 39  DD  Electrets separator
DIG 42  DD  Foam filter materials
DIG 43  DD  Knitted filter mediums
DIG 44  DD  Pile and pile-type filter mediums
DIG 45  DD  Woven filter mediums
DIG 46  DD  Spray booths