IPC-Stelle: A47L 13/40 [Version 2017.01]

SymbolTypTitel
ASKHUMAN NECESSITIES
A47KLFURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
A47LUKLDOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B 9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)
A47L 1/00ZWCleaning windows, window shades, window screens, venetian blinds
A47L 1/00HGRCleaning windows [1, 2006.01]
A47L 1/02UGR1
.Power-driven machines or devices [1, 2006.01]
A47L 1/03UGR2
. .cleaning both sides of a window simultaneously [1, 2006.01]
A47L 1/05UGR2
. .Hand apparatus with built-in electric motors [3, 2006.01]
A47L 1/06UGR1
.Hand implements (with built-in electric motors A47L 1/05) [1, 3, 2006.01]
A47L 1/08UGR2
. .with provision for supplying liquids, e.g. cleaning agents (A47L 1/095, A47L 1/13, A47L 1/15 take precedence) [1, 3, 2006.01]
A47L 1/09UGR2
. .for cleaning one side with access from the other side only [3, 2006.01]
A47L 1/095UGR3
. . .with provision for supplying liquids, e.g. cleaning agents [3, 2006.01]
A47L 1/12UGR2
. .for cleaning both sides simultaneously [1, 3, 2006.01]
A47L 1/13UGR3
. . .with provision for supplying liquids, e.g. cleaning agents [3, 2006.01]
A47L 1/15UGR2
. .Cloths, sponges, pads, or the like, e.g. containing cleaning agents [3, 2006.01]
A47L 1/16UGR1
.Devices for defrosting window-panes (H05B 3/84 takes precedence) [1, 5, 2006.01]
A47L 3/00HGRSafety devices for use in window-cleaning (safety belts A62B 35/00; for scaffolding in general E04G; for ladders E06C) [1, 2006.01]
A47L 3/02UGR1
.Cages; Platforms [1, 2006.01]
A47L 3/04UGR1
.Safety ropes [1, 2006.01]
A47L 4/00HGRCleaning window shades, window screens, venetian blinds (A47L 1/15 takes precedence; suction cleaner nozzles A47L 9/02) [3, 2006.01]
A47L 4/02UGR1
.Hand implements for cleaning venetian blinds [3, 2006.01]
A47L 4/04UGR1
.Accessories facilitating cleaning, e.g. venetian blind separators, spreaders, or cleaning racks [3, 2006.01]
A47L 5/00ZWSuction cleaners [3]
A47L 5/00HGRStructural features of suction cleaners [1, 2006.01]
A47L 5/02UGR1
.with user-driven air-pumps or compressors [1, 2006.01]
A47L 5/04UGR2
. .with pistons, bellows, or diaphragms, e.g. driven by the cleaner-supporting wheels [1, 2006.01]
A47L 5/05UGR3
. . .with driven dust-loosening tools [1, 2006.01]
A47L 5/06UGR2
. .with rotary fans [1, 2006.01]
A47L 5/08UGR3
. . .driven by cleaner-supporting wheels [1, 2006.01]
A47L 5/10UGR4
. . . .with driven dust-loosening tools [1, 2006.01]
A47L 5/12UGR1
.with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum [1, 2006.01]
A47L 5/14UGR2
. .cleaning by blowing-off, also combined with suction cleaning [1, 2006.01]
A47L 5/16UGR2
. .with suction devices other than rotary fans [1, 2006.01]
A47L 5/18UGR3
. . .with ejectors, e.g. connected to motor vehicle exhaust [1, 2006.01]
A47L 5/20UGR3
. . .with bellows, diaphragms or pistons [1, 2006.01]
A47L 5/22UGR2
. .with rotary fans [1, 2006.01]
A47L 5/24UGR3
. . .Hand-supported suction cleaners [1, 2006.01]
A47L 5/26UGR4
. . . .with driven dust-loosening tools [1, 2006.01]
A47L 5/28UGR3
. . .Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle (A47L 5/24 takes precedence) [1, 2006.01]
A47L 5/30UGR4
. . . .with driven dust-loosening tools, e.g. rotating brushes [1, 2006.01]
A47L 5/32UGR4
. . . .with means for connecting a hose (hose couplings for suction cleaners A47L 9/24) [1, 2006.01]
A47L 5/34UGR4
. . . .with height adjustment of nozzles or dust-loosening tools [1, 2006.01]
A47L 5/36UGR3
. . .Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back [1, 2006.01]
A47L 5/38UGR3
. . .Built-in suction cleaner installations, i.e. with fixed tube system to which, at different stations, hoses can be connected [1, 2006.01]
A47L 7/00HGRSuction cleaners adapted for additional purposes (with floor-polishing tools A47L 11/20; suction devices for removing ash F23J 1/02); Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids [1, 2006.01]
A47L 7/02UGR1
.with driven tools for special purposes [1, 2006.01]
A47L 7/04UGR1
.for using the exhaust air for other purposes, e.g. for distribution of chemicals in a room, for sterilisation of the air (spraying or atomising in general B05) [1, 2006.01]
A47L 7/06UGR2
. .for supporting the suction cleaner on the exhaust air [1, 2006.01]
A47L 7/08UGR2
. .with combustion of dust in exhaust air [1, 2006.01]
A47L 9/00HGRDetails or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners [1, 2006.01]
A47L 9/02UGR1
.Nozzles (suction nozzles for fluid transport B65G 51/00) [1, 2006.01]
A47L 9/04UGR2
. .with driven brushes or agitators [1, 2006.01]
A47L 9/06UGR2
. .with fixed, e.g. adjustably fixed brushes or the like [1, 2006.01]
A47L 9/08UGR2
. .with means adapted for blowing [1, 2006.01]
A47L 9/10UGR1
.Filters (in general B01D; cyclones B04C); Dust separators; Dust removal; Automatic exchange of filters [1, 2006.01]
A47L 9/12UGR2
. .Dry filters [1, 2006.01]
A47L 9/14UGR2
. .Bags or the like; Attachment of, or closures for, bags [1, 2006.01]
A47L 9/16UGR2
. .Arrangement or disposition of cyclones or other devices with centrifugal action [1, 2006.01]
A47L 9/18UGR2
. .Liquid filters [1, 2006.01]
A47L 9/19UGR2
. .Means for monitoring filtering operation [3, 2006.01]
A47L 9/20UGR1
.Means for cleaning filters [1, 2006.01]
A47L 9/22UGR1
.Mountings for motor fan assemblies [1, 2006.01]
A47L 9/24UGR1
.Hoses; Hose couplings (hoses or hose joints in general F16L) [1, 2006.01]
A47L 9/26UGR1
.Incorporation of winding devices for electric cables (devices specially adapted for repeatedly paying-out or re-storing cables B65H 75/34; arrangements of electrical cables or lines between relatively-movable parts H02G 11/00) [1, 2006.01]
A47L 9/28UGR1
.Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means [1, 2006.01]
A47L 9/30UGR2
. .Arrangement of illuminating devices [1, 2006.01]
A47L 9/32UGR1
.Handles [1, 2006.01]
A47L 11/00ZWCleaning floors, carpets, furniture, walls, or wall coverings
A47L 11/00HGRMachines for cleaning floors, carpets, furniture, walls, or wall coverings [1, 2006.01]
A47L 11/02UGR1
.Floor surfacing or polishing machines (polishing machines in general B24B 29/00) [1, 2006.01]
A47L 11/03UGR2
. .characterised by having provisions for supplying cleaning or polishing agents [1, 2006.01]
A47L 11/04UGR2
. .hand-driven [1, 2006.01]
A47L 11/06UGR3
. . .with reciprocating or oscillating tools [1, 2006.01]
A47L 11/08UGR3
. . .with rotating tools [1, 2006.01]
A47L 11/10UGR2
. .motor-driven [1, 2006.01]
A47L 11/12UGR3
. . .with reciprocating or oscillating tools [1, 2006.01]
A47L 11/14UGR3
. . .with rotating tools [1, 2006.01]
A47L 11/16UGR4
. . . .the tools being disc brushes [1, 2006.01]
A47L 11/162UGR5
. . . . .having only a single disc brush [1, 2006.01]
A47L 11/164UGR5
. . . . .Parts or details of the brushing tools [1, 2006.01]
A47L 11/18UGR4
. . . .the tools being roll brushes [1, 2006.01]
A47L 11/19UGR5
. . . . .Parts or details of the brushing tools [1, 2006.01]
A47L 11/20UGR2
. .combined with vacuum cleaning devices [1, 2006.01]
A47L 11/202UGR3
. . .having separate drive for the cleaning brushes [1, 2006.01]
A47L 11/204UGR3
. . .having combined drive for brushes and for vacuum cleaning [1, 2006.01]
A47L 11/205UGR4
. . . .for reciprocating brushes [1, 2006.01]
A47L 11/206UGR4
. . . .for rotary disc brushes [1, 2006.01]
A47L 11/22UGR1
.Floor-sweeping machines, hand-driven [1, 2006.01]
A47L 11/24UGR1
.Floor-sweeping machines, motor-driven [1, 2006.01]
A47L 11/26UGR1
.Floor-scrubbing machines, hand-driven (A47L 11/29 takes precedence) [1, 2006.01]
A47L 11/28UGR1
.Floor-scrubbing machines, motor-driven (A47L 11/29 takes precedence) [1, 2006.01]
A47L 11/282UGR2
. .having rotary tools [1, 2006.01]
A47L 11/283UGR3
. . .the tools being disc brushes [1, 2006.01]
A47L 11/284UGR2
. .having reciprocating tools [1, 2006.01]
A47L 11/29UGR1
.Floor-scrubbing machines characterised by means for taking-up dirty liquid [1, 2006.01]
A47L 11/292UGR2
. .having rotary tools (A47L 11/30 takes precedence) [1, 2006.01]
A47L 11/293UGR3
. . .the tools being disc brushes [1, 2006.01]
A47L 11/294UGR2
. .having reciprocating tools (A47L 11/30 takes precedence) [1, 2006.01]
A47L 11/30UGR2
. .by suction [1, 2006.01]
A47L 11/32UGR1
.Carpet-sweepers (combined with suction cleaners A47L 7/02) [1, 2006.01]
A47L 11/33UGR2
. .having means for storing dirt [1, 2006.01]
A47L 11/34UGR1
.Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam [1, 2006.01]
A47L 11/36UGR1
.Machines for beating upholstery [1, 2006.01]
A47L 11/38UGR1
.Machines, specially adapted for cleaning walls, ceilings, roofs, or the like [1, 2006.01]
A47L 11/40UGR1
.Parts or details of machines not provided for in groups A47L 11/02-A47L 11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers or levers [1, 2006.01]
A47L 13/00HGRImplements for cleaning floors, carpets, furniture, walls, or wall coverings (brushes, their handles or fastenings A46B, B25G; scrapers for finishing work on buildings E04F 21/00) [1, 2006.01]
A47L 13/02UGR1
.Scraping [1, 2006.01]
A47L 13/022UGR2
. .Scraper handles [1, 2006.01]
A47L 13/03UGR2
. .Scrapers having provisions for supplying cleaning agents [1, 2006.01]
A47L 13/04UGR2
. .with steel wool [1, 2006.01]
A47L 13/06UGR2
. .with wire brushes or wire meshes [1, 2006.01]
A47L 13/07UGR3
. . .Metal sponges (A47L 13/022, A47L 13/03 take precedence) [1, 2006.01]
A47L 13/08UGR2
. .with scraping blades [1, 2006.01]
A47L 13/10UGR1
.Scrubbing; Scouring; Cleaning; Polishing [1, 2006.01]
A47L 13/11UGR2
. .Squeegees [1, 3, 2006.01]
A47L 13/12UGR2
. .Implements with several different treating devices [1, 3, 2006.01]
A47L 13/14UGR2
. .combined with squeezing or wringing devices [1, 2006.01]
A47L 13/142UGR3
. . .having torsional squeezing or wringing action [1, 2006.01]
A47L 13/144UGR3
. . .having squeezing rollers [1, 2006.01]
A47L 13/146UGR3
. . .having pivoting squeezing plates [1, 2006.01]
A47L 13/16UGR2
. .Cloths; Pads; Sponges (metal scraping sponges A47L 13/07) [1, 2006.01]
A47L 13/17UGR3
. . .containing cleaning agents (A47L 13/19 takes precedence) [1, 2006.01]
A47L 13/18UGR3
. . .Gloves; Glove-like cloths [1, 2006.01]
A47L 13/19UGR4
. . . .containing cleaning agents [1, 2006.01]
A47L 13/20UGR2
. .Mops [1, 2006.01]
A47L 13/22UGR3
. . .with liquid-feeding devices [1, 2006.01]
A47L 13/23UGR4
. . . .connectible to the water mains [1, 2006.01]
A47L 13/24UGR3
. . .Frames for mops; Mop heads (handles B25G) [1, 2006.01]
A47L 13/25UGR4
. . . .Wire frames [1, 2006.01]
A47L 13/252UGR5
. . . . .for mops of textile fringes or the like [1, 2006.01]
A47L 13/253UGR5
. . . . .of adjustable or foldable type [1, 2006.01]
A47L 13/254UGR4
. . . .Plate frames [1, 2006.01]
A47L 13/255UGR5
. . . . .for mops of textile fringes or the like [1, 2006.01]
A47L 13/256UGR5
. . . . .for mops made of cloth [1, 2006.01]
A47L 13/257UGR5
. . . . .for mops made of sponge material [1, 2006.01]
A47L 13/258UGR5
. . . . .of adjustable or foldable type [1, 2006.01]
A47L 13/26UGR2
. .Other cleaning devices with liquid supply arrangements (such arrangements on floor-polishing machines A47L 11/00, on scrapers A47L 13/03, on mops A47L 13/22; cloths, pads, or the like containing cleaning agents A47L 13/17, A47L 13/19) [1, 3, 2006.01]
A47L 13/28UGR2
. .Polishing implements (polishing machines A47L 11/02) [1, 2006.01]
A47L 13/282UGR3
. . .mounted under footwear [1, 2006.01]
A47L 13/284UGR3
. . .having fixed or detachable weights [1, 2006.01]
A47L 13/286UGR3
. . .having containers for storing polishing material, e.g. polishing paper [1, 2006.01]
A47L 13/29UGR3
. . .having movable or detachable polishing or shining cloths [1, 2006.01]
A47L 13/294UGR3
. . .having invertible head, one side being used for dispensing polishing material and the reverse side for shining [1, 2006.01]
A47L 13/30UGR3
. . .Implements for polishing and waxing or oiling, with dispensers for wax or oil [1, 2006.01]
A47L 13/31UGR4
. . . .having movable or detachable polishing or shining cloths [1, 2006.01]
A47L 13/312UGR5
. . . . .supplied with liquid wax or oil [1, 2006.01]
A47L 13/314UGR4
. . . .having invertible head, one side being used for dispensing wax or oil and the reverse side for shining [1, 2006.01]
A47L 13/316UGR5
. . . . .supplied with liquid wax or oil [1, 2006.01]
A47L 13/32UGR3
. . .Wax dispensers with heating arrangements [1, 2006.01]
A47L 13/34UGR2
. .Scouring implements for hearths or metal objects [1, 2006.01]
A47L 13/36UGR2
. .Carpet-beaters [1, 2006.01]
A47L 13/38UGR2
. .Other dusting implements [1, 2006.01]
A47L 13/40UGR2
. .Cleaning implements actuated by electrostatic attraction; Devices for cleaning same; Magnetic cleaning implements [1, 2006.01]
A47L 13/41UGR3
. . .Magnetic cleaning implements [1, 2006.01]
A47L 13/42UGR2
. .Details [1, 2006.01]
A47L 13/44UGR3
. . .Securing scouring-cloths to the brush or like body of the implement [1, 2006.01]
A47L 13/46UGR3
. . .Securing scouring- or polishing-cloths or sponges to the handles by gripping means, tongs, or the like [1, 2006.01]
A47L 13/48UGR3
. . .Protective devices, such as bumpers or guard plates [1, 2006.01]
A47L 13/50UGR2
. .Auxiliary implements (cleaning devices for brushes or the like A46B 17/06) [1, 2006.01]
A47L 13/502UGR3
. . .Shakers for dust-cloths or mops; Bumpers therefor [1, 2006.01]
A47L 13/51UGR3
. . .Storing of cleaning tools, e.g. containers therefor [1, 2006.01]
A47L 13/512UGR4
. . . .Clamping devices for hanging the tools [1, 2006.01]
A47L 13/52UGR3
. . .Dust pans; Crumb trays [1, 2006.01]
A47L 13/54UGR3
. . .Racks for beating carpets [1, 2006.01]
A47L 13/56UGR3
. . .Implements for applying wax or oil [1, 2006.01]
A47L 13/58UGR3
. . .Wringers for scouring pads, mops, or the like, combined with buckets [1, 2006.01]
A47L 13/59UGR4
. . . .with movable squeezing members [1, 2006.01]
A47L 13/60UGR4
. . . .with squeezing rollers [1, 2006.01]
A47L 13/62UGR3
. . .Kneeling supports, especially wheeled (kneeling cushions attachable to knees A41D 13/06) [1, 2006.01]
A47L 15/00ZWCleaning or polishing household articles or the like
A47L 15/00HGRWashing or rinsing machines for crockery or table-ware [1, 2006.01]
A47L 15/02UGR1
.with circulation and agitation of the cleaning liquid in the cleaning chamber containing a stationary basket [1, 2006.01]
A47L 15/04UGR2
. .by reciprocating movement of the cleaning chamber [1, 2006.01]
A47L 15/06UGR2
. .by means of an impeller in the chamber [1, 2006.01]
A47L 15/08UGR2
. .by application of a pressure effect produced by pumps [1, 2006.01]
A47L 15/10UGR2
. .by introducing compressed air or other gas into the liquid [1, 2006.01]
A47L 15/12UGR2
. .by a boiling effect [1, 2006.01]
A47L 15/13UGR2
. .using sonic or ultrasonic waves [5, 2006.01]
A47L 15/14UGR1
.with stationary crockery baskets and spraying devices within the cleaning chamber [1, 2006.01]
A47L 15/16UGR2
. .with rigidly-mounted spraying devices [1, 2006.01]
A47L 15/18UGR2
. .with movably-mounted spraying devices [1, 2006.01]
A47L 15/20UGR3
. . .Swingable spraying devices [1, 2006.01]
A47L 15/22UGR3
. . .Rotary spraying devices [1, 2006.01]
A47L 15/23UGR4
. . . .moved by means of the sprays [1, 2006.01]
A47L 15/24UGR1
.with movement of the crockery baskets by conveyors [1, 2006.01]
A47L 15/26UGR1
.with movement of the crockery baskets by other means [1, 2006.01]
A47L 15/28UGR2
. .by lowering and lifting only [1, 2006.01]
A47L 15/30UGR2
. .by rotating only [1, 2006.01]
A47L 15/32UGR3
. . .rotated by means of spraying water [1, 2006.01]
A47L 15/33UGR3
. . .with moving baskets submerged in the cleaning fluid [1, 2006.01]
A47L 15/34UGR2
. .by lowering and lifting combined with a rotating movement [1, 2006.01]
A47L 15/36UGR2
. .by a sideways motion [1, 2006.01]
A47L 15/37UGR1
.with crockery cleaned by brushes [3, 2006.01]
A47L 15/39UGR2
. .with brushes on movable supports [3, 2006.01]
A47L 15/42UGR1
.Details [1, 2006.01]
A47L 15/44UGR2
. .Devices for adding cleaning agents [1, 2006.01]
A47L 15/46UGR2
. .Devices for the automatic control of the different phases of cleaning [1, 2006.01]
A47L 15/48UGR2
. .Drying arrangements [1, 2006.01]
A47L 15/50UGR2
. .Racks [1, 2006.01]
A47L 17/00HGRApparatus or implements used in manual washing or cleaning of crockery, table-ware, cooking-ware or the like (foam-making devices A47K 5/14) [1, 2006.01]
A47L 17/02UGR1
.Basins (dish-washing tables A47B 33/00; sanitary basins A47K 1/04; basins connected to waste pipe E03C 1/12) [1, 2006.01]
A47L 17/04UGR1
.Pan or pot cleaning utensils [1, 2006.01]
A47L 17/06UGR2
. .Scrapers [1, 2006.01]
A47L 17/08UGR2
. .Pads; Balls of steel wool, wire, or plastic meshes [1, 2006.01]
A47L 17/10UGR1
.Tongs for crockery [1, 2006.01]
A47L 19/00HGRDrying devices for crockery or table-ware, e.g. tea-cloths [1, 2006.01]
A47L 19/02UGR1
.Draining-boards [1, 2006.01]
A47L 19/04UGR1
.Crockery baskets; Draining-racks [1, 2006.01]
A47L 21/00HGRPolishing of table-ware, e.g. knives, forks, spoons [1, 2006.01]
A47L 21/02UGR1
.Machines [1, 2006.01]
A47L 21/04UGR1
.Hand implements [1, 2006.01]
A47L 21/06UGR1
.Supports or rests for use while polishing [1, 2006.01]
A47L 23/00HGRCleaning footwear [1, 2006.01]
A47L 23/02UGR1
.Shoe-cleaning machines, with or without applicators for shoe polish [1, 2006.01]
A47L 23/04UGR1
.Hand implements for shoe-cleaning, with or without applicators for shoe polish (ordinary brushes, with or without containers, A46B 11/00) [1, 2006.01]
A47L 23/05UGR2
. .with applicators for shoe polish [1, 2006.01]
A47L 23/06UGR2
. .with electric drive [1, 2006.01]
A47L 23/08UGR2
. .Special hand implements for cleaning and recolouring footwear, e.g. powder pads [1, 2006.01]
A47L 23/10UGR2
. .Cloth or collapsible cleaning pads; Glove-like cleaning cloths (glove-like washing cloths A47K 7/02) [1, 2006.01]
A47L 23/12UGR2
. .Cleaning devices for suede [1, 2006.01]
A47L 23/14UGR2
. .Implements for use during shoe-cleaning, to guard against spoiling [1, 2006.01]
A47L 23/16UGR1
.Shoe-shine stands; Foot-rests with guides for the polishing cloths [1, 2006.01]
A47L 23/17UGR2
. .Foot-rests with guides for the polishing cloths [1, 2006.01]
A47L 23/18UGR1
.Devices for holding footwear during cleaning or shining (shoe-lasts A43D 3/00); Holding devices with stretching effect [1, 2006.01]
A47L 23/20UGR1
.Devices or implements for drying footwear, also with heating arrangements (cabinets for shoes A47B 61/04) [1, 2006.01]
A47L 23/22UGR1
.Devices or implements resting on the floor for removing mud, dirt, or dust from footwear (built-in gratings, e.g. foot-scrapers, E04F 19/10) [1, 2006.01]
A47L 23/24UGR2
. .Rigid cleaning-gratings; Tread plates or scrapers for cleaning the soles of footwear (floor mats in general A47G 27/02) [1, 2006.01]
A47L 23/26UGR2
. .Mats or gratings combined with brushes [1, 2006.01]
A47L 23/28UGR1
.Receptacles for shoe-cleaning equipment [1, 2006.01]
A47L 25/00ZWE
A47L 25/00HGRDomestic cleaning devices not provided for in other groups of this subclass (for cleaning spectacles G02C 13/00) [1, 2006.01]
A47L 25/02UGR1
.for buttons, clasps, or military insignia [1, 2006.01]
A47L 25/04UGR1
.for door-knobs [1, 2006.01]
A47L 25/06UGR1
.Guard plates for use while cleaning butts, door-knobs or the like [1, 2006.01]
A47L 25/08UGR1
.Pads or the like for cleaning clothes [1, 2006.01]
A47L 25/12UGR1
.Devices or implements for cleaning lamp chimneys [1, 2006.01]