|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

|  | B01 - B07 |
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION |
Method |
General operations | B01D
by centrifugal force, using centrifuges or free-vortex apparatus | B01D
using magnetic or electrostatic effect | B03C
Apparatus |
General operations | B01D
by centrifugal force, using centrifuges or free-vortex apparatus | B04B, B04C
using magnetic or electrostatic effect | B03C
SOLID/LIQUID OR SOLID/GAS SEPARATION |
Method |
General operations | B01D
by centrifugal force | B01D
using centrifuges or free-vortex apparatus | B01D
using magnetic or electrostatic effect | B03C
Apparatus |
General operations | B01D
by centrifugal force | B01D
using centrifuges or free-vortex apparatus | B04B, B04C
using magnetic or electrostatic effect | B03C
SOLID/SOLID SEPARATION |
Method |
Dry methods |
material in bulk | B07B
Individual sorting | B07C
Screening, sifting, pneumatic sorting | B07B
using pneumatic tables or jigs | B03B
by magnetic or electrostatic effect | B03C
by centrifugal force | B07B
using centrifuges or free-vortex apparatus | B07B
Wet methods |
General operations | B03B
flotation, differential sedimentation | B03D
screening | B07B
Combinations Dry methods - wet methods | B03B
Apparatus |
Dry methods |
material in bulk | B07B
Individual sorting | B07C
Screening, sifting, pneumatic sorting | B07B
using pneumatic tables or jigs | B03B
by magnetic or electrostatic effect | B03C
by centrifugal force | B07B
using centrifuges or free-vortex apparatus | B04B, B04C
Wet methods |
General operations | B03B
flotation, differential sedimentation | B03D
screening | B07B
Combinations Dry methods - wet methods | B03B

PRINTING

|  | B43 |
WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES

|  | B43K |
IMPLEMENTS FOR WRITING OR DRAWING (containers, casings or accessories for cosmetic substances, e.g. shaving soap, lipstick, make-up, Fulltext... Hierarchy... Expanded...A45D 34/00, Fulltext... Hierarchy... Expanded...A45D 40/00)

|  | B43K |
Note(s) In this subclass, the following expression is used with the meaning indicated: [6] "writing implements" covers pens, pencils, crayons, chalks or like markers for writing or drawing. [6]

|  | B43K |
Subclass index
IMPLEMENTS WITH CORES |
Without mechanisms | 19/00
With mechanisms | 21/00
Accessories | 23/00, 25/00
IMPLEMENTS USING INK |
Without reservoir | 3/00
With reservoir | 5/00, 7/00, 8/00
Nibs; filling devices; caps | 1/00, 17/00; 11/00; 23/00
Manufacture, maintenance | 13/00, 15/00
SELECTING, PROJECTING, RETRACTING OR LOCKING WRITING UNITS | 24/00
MULTIPLE-POINT WRITING IMPLEMENTS | 27/00
COMBINATIONS |
Of writing implements with other articles | 29/00, 31/00

P:110 |  | B43K 1/00 |
Nibs (continuously-adjustable nibs Fulltext... Hierarchy... Expanded...B43K 17/00); Writing- points (for indicating or recording apparatus Fulltext... Hierarchy... Expanded...G01D 15/16) [2]

|  | B43K 1/01 |
· | with ink reservoirs, e.g. funnel-shaped [6]

|  | B43K 1/02 |
· | Split nibs

|  | B43K 1/04 |
· · | with broadened tips

|  | B43K 1/06 |
· | Tubular writing-points

|  | B43K 1/08 |
· | with ball points; Balls or ball beds

|  | B43K 1/10 |
· | Wire nibs

|  | B43K 1/12 |
· | Writing-points comprising fibres; Felt pads

P:120 |  | B43K 3/00 |
Nib holders (holders for continuously-adjustable nibs Fulltext... Hierarchy... Expanded...B43K 17/00)

|  | B43K 3/02 |
· | with ink guards

|  | B43K 3/04 |
· | with retractable nibs (mechanisms for retracting or locking nibs Fulltext... Hierarchy... Expanded...B43K 24/00)

P:80 |  | B43K 5/00 |
Pens with ink reservoirs in holders, e.g. fountain-pens (nibs or writing-points with ink reservoirs Fulltext... Hierarchy... Expanded...B43K 1/01; ball-point pens Fulltext... Hierarchy... Expanded...B43K 7/00; pens with writing-points other than nibs or balls Fulltext... Hierarchy... Expanded...B43K 8/00; multiple-point writing implements Fulltext... Hierarchy... Expanded...B43K 27/00)

|  | B43K 5/02 |
· | Ink reservoirs

|  | B43K 5/03 |
· · | specially adapted for concentrated ink, e.g. solid ink [6]

|  | B43K 5/04 |
· · | flexible

|  | B43K 5/06 |
· · | with movable pistons

|  | B43K 5/08 |
· · · | with ink-supplying valves

|  | B43K 5/10 |
· · | with reserve ink chambers

|  | B43K 5/12 |
· · | with ink-level inspection means

|  | B43K 5/14 |
· · | Exchangeable ink cartridges

|  | B43K 5/16 |
· | with retractable nibs (mechanisms for retracting or locking nibs Fulltext... Hierarchy... Expanded...B43K 24/00)

|  | B43K 5/17 |
· · | with closing means [6]

|  | B43K 5/18 |
· | Arrangements for feeding the ink to the nibs

P:70 |  | B43K 7/00 |
Ball-point pens (multiple-point writing implements Fulltext... Hierarchy... Expanded...B43K 27/00)

|  | B43K 7/01 |
· | for low viscosity liquid ink [6]

|  | B43K 7/02 |
· | Ink reservoirs; Ink cartridges (Fulltext... Hierarchy... Expanded...B43K 7/01 takes precedence) [6]

|  | B43K 7/03 |
· · | pressurised, e.g. by gas [5]

|  | B43K 7/035 |
· · · | the gas acting on a piston [6]

|  | B43K 7/04 |
· · | Arrangements for refilling the reservoirs, e.g. arrangements at the ball-point ends

|  | B43K 7/06 |
· · | Reservoirs with ink-level inspection means

|  | B43K 7/08 |
· · | Preventing leakage

|  | B43K 7/10 |
· | Arrangements for feeding the ink to the ball points (Fulltext... Hierarchy... Expanded...B43K 7/01 takes precedence) [6]

|  | B43K 7/12 |
· | with retractable ball points (mechanisms for retracting or locking ball points Fulltext... Hierarchy... Expanded...B43K 24/00)

P:60 |  | B43K 8/00 |
Pens with writing-points other than nibs or balls (brushes with reservoir for supplying substances Fulltext... Hierarchy... Expanded...A46B 11/00)

|  | B43K 8/02 |
· | with writing-points comprising fibres, felt, or similar porous or capillary material (Fulltext... Hierarchy... Expanded...B43K 8/22 takes precedence) [2,5]

|  | B43K 8/03 |
· · | Ink reservoirs; Ink cartridges [6]

|  | B43K 8/04 |
· · | Arrangements for feeding ink to writing-points [5]

|  | B43K 8/06 |
· · · | Wick feed from within reservoir to writing-points [5]

|  | B43K 8/08 |
· · · · | Wick separate from writing-points [5]

|  | B43K 8/10 |
· · · | including compartment for soluble solid material [5]

|  | B43K 8/12 |
· · · | writing-points or writing-point units being separable from reservoir [5]

|  | B43K 8/14 |
· | with coreless tubular writing-points [5]

|  | B43K 8/16 |
· | with tubular writing-points comprising a movable cleaning element [5]

|  | B43K 8/18 |
· · | Arrangements for feeding the ink to the writing-points [5]

|  | B43K 8/20 |
· | with roller writing-points [5]

|  | B43K 8/22 |
· | with electrically or magnetically activated writing-points [5]

|  | B43K 8/24 |
· | characterised by the means for retracting writing-points [5]

P:140 |  | B43K 11/00 |
Filling devices (ink receptacles Fulltext... Hierarchy... Expanded...B43L 25/00)

P:130 |  | B43K 13/00 |
Devices for removing nibs; Devices for cleaning nibs, e.g. by wiping (ink receptacles with pen-wiping means Fulltext... Hierarchy... Expanded...B43L 25/12) [3]

|  | B43K 13/02 |
· | for cleaning nibs, e.g. ink reservoirs therein [6]

P:160 |  | B43K 15/00 |
Assembling, finishing, or repairing pens

|  | B43K 15/02 |
· | Automatic machines

P:100 |  | B43K 17/00 |
Continuously-adjustable nibs, e.g. for drawing-pens; Holders therefor (features common to fountain-pens Fulltext... Hierarchy... Expanded...B43K 5/00)

|  | B43K 17/01 |
· | Nibs with ink reservoirs [6]

|  | B43K 17/02 |
· | Nibs having more than two legs

|  | B43K 17/04 |
· | Holders with arrangements for drawing dotted lines

P:50 |  | B43K 19/00 |
Non-propelling pencils; Styles; Crayons; Chalks (batik pencils, cord line chalkers Fulltext... Hierarchy... Expanded...B44D 3/00; writing-core compositions for pencils, crayon compositions, chalk compositions Fulltext... Hierarchy... Expanded...C09D 13/00) [2]

|  | B43K 19/02 |
· | Pencils with graphite; Coloured pencils

|  | B43K 19/04 |
· | Pencils with metallic writing-core

|  | B43K 19/06 |
· · | the writing-core being made from substance wearing off during use

|  | B43K 19/08 |
· · | the writing-core being made from wear-resistant substances

|  | B43K 19/10 |
· · · | equipped with ball point (using ink Fulltext... Hierarchy... Expanded...B43K 1/08, Fulltext... Hierarchy... Expanded...B43K 7/00)

|  | B43K 19/12 |
· | Slate pencils

|  | B43K 19/14 |
· | Sheathings

|  | B43K 19/16 |
· | Making non-propelling pencils (making slate-pencil writing-cores Fulltext... Hierarchy... Expanded...B28D)

|  | B43K 19/18 |
· · | Making pencil writing-cores

P:40 |  | B43K 21/00 |
Propelling pencils (projecting mechanisms for writing units Fulltext... Hierarchy... Expanded...B43K 24/00; multiple-point writing implements Fulltext... Hierarchy... Expanded...B43K 27/00)

|  | B43K 21/02 |
· | Writing-core feeding mechanisms

|  | B43K 21/027 |
· · | with sliding tube-like writing-core guide [5]

|  | B43K 21/033 |
· · · | with automatic feed by pressure during use of pencil [5]

|  | B43K 21/04 |
· · | with the writing-cores brought into position by gravity

|  | B43K 21/06 |
· · | with the writing-cores fed by means sliding in longitudinally-slotted casings

|  | B43K 21/08 |
· · | with the writing-cores fed by screws

|  | B43K 21/10 |
· · · | with separate writing-core remnants ejecting-bar

|  | B43K 21/12 |
· · · | with means preventing overwinding

|  | B43K 21/14 |
· · · | with writing-cores automatically replaced from magazines

|  | B43K 21/16 |
· · | with stepwise feed of writing-cores

|  | B43K 21/18 |
· · · | having ratchet means

|  | B43K 21/20 |
· · · | with writing-cores automatically replaced from magazines

|  | B43K 21/22 |
· · | Writing-cores gripping means, e.g. chucks

|  | B43K 21/24 |
· | Assembling, finishing, or repairing propelling pencils (making pencil writing-cores Fulltext... Hierarchy... Expanded...B43K 19/18)

|  | B43K 21/26 |
· · | Automatic machines

P:150 |  | B43K 23/00 |
Holders or connectors for writing implements; Means for protecting the writing-points

|  | B43K 23/004 |
· | Holders specially adapted for assisting handicapped or disabled persons to write (Fulltext... Hierarchy... Expanded...B43L 15/00 takes precedence) [6]

|  | B43K 23/008 |
· | Holders comprising finger grips (Fulltext... Hierarchy... Expanded...B43K 23/004, Fulltext... Hierarchy... Expanded...B43K 23/012 take precedence) [6]

|  | B43K 23/012 |
· | Holders for attachment to finger tips (Fulltext... Hierarchy... Expanded...B43K 23/004 takes precedence) [6]

|  | B43K 23/016 |
· | Holders for crayons or chalks (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B43K 23/004-B43K 23/012, Fulltext... Hierarchy... Expanded...B43K 23/02 take precedence) [6]

|  | B43K 23/02 |
· | with means for preventing rolling (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B43K 23/004-B43K 23/012 take precedence) [6]

|  | B43K 23/04 |
· · | enabling the writing implement to be set upright

|  | B43K 23/06 |
· | Means for connecting two or more writing implements [6]

|  | B43K 23/08 |
· | Protecting means, e.g. caps [6]

|  | B43K 23/10 |
· · | for pencils [6]

|  | B43K 23/12 |
· · | for pens [6]

P:90 |  | B43K 24/00 |
Mechanisms for selecting, projecting, retracting or locking writing units [6]

|  | B43K 24/02 |
· | for locking a single writing unit in only fully projected or retracted positions

|  | B43K 24/03 |
· · | operated by flicking or tilting [6]

|  | B43K 24/04 |
· · | operated by means sliding in longitudinally-slotted casings

|  | B43K 24/06 |
· · | operated by turning means

|  | B43K 24/08 |
· · | operated by push-buttons

|  | B43K 24/10 |
· | for selecting, projecting and locking several writing units

|  | B43K 24/12 |
· · | operated by means sliding in longitudinally-slotted casings

|  | B43K 24/14 |
· · | operated by turning means

|  | B43K 24/16 |
· · | operated by push-buttons

|  | B43K 24/18 |
· · | and for feeding the writing cores

P:0 |  | B43K 25/00 |
Attaching writing implements to wearing apparel or objects involving constructional changes of the of the implements (protecting means, e.g. caps, Fulltext... Hierarchy... Expanded...B43K 23/08; garment-holding devices Fulltext... Hierarchy... Expanded...A44B 21/00; fastening articles to wearing apparel Fulltext... Hierarchy... Expanded...A45F 5/02)

|  | B43K 25/02 |
· | Clips [6]

P:30 |  | B43K 27/00 |
Multiple-point writing implements, e.g. multicolour; Combinations of writing implements (Fulltext... Hierarchy... Expanded...B43K 29/00 takes precedence; mechanisms for selecting, projecting, retracting or locking writing units Fulltext... Hierarchy... Expanded...B43K 24/00; multiple writing devices with pantographic linkages Fulltext... Hierarchy... Expanded...B43L 13/12)

|  | B43K 27/02 |
· | Combinations of pens and pencils

|  | B43K 27/04 |
· | Combinations of pencils (writing-core feed mechanisms Fulltext... Hierarchy... Expanded...B43K 21/02)

|  | B43K 27/08 |
· | Combinations of pens

|  | B43K 27/12 |
· · | of ball-point pens [3]

P:20 |  | B43K 29/00 |
Combinations of writing implements with other articles

|  | B43K 29/007 |
· | with advertising means [6]

|  | B43K 29/013 |
· | with stamping means [6]

|  | B43K 29/02 |
· | with rubbers

|  | B43K 29/04 |
· | with blotters

|  | B43K 29/05 |
· | with applicators for eradicating- or correcting-liquid [6]

|  | B43K 29/06 |
· | with sharpening devices (with erasing knives Fulltext... Hierarchy... Expanded...B43K 29/18; pocket knives with pencils Fulltext... Hierarchy... Expanded...B26B)

|  | B43K 29/08 |
· | with measuring, computing or indicating devices

|  | B43K 29/087 |
· · | for indicating time, e.g. with calendars or watches [6]

|  | B43K 29/093 |
· · | with calculators [6]

|  | B43K 29/10 |
· | with illuminating devices

|  | B43K 29/12 |
· | with memorandum appliances (with book covers Fulltext... Hierarchy... Expanded...B42D)

|  | B43K 29/16 |
· | with lighters

|  | B43K 29/18 |
· | with hand tools, e.g. erasing knives (with pocket knives Fulltext... Hierarchy... Expanded...B26B)

|  | B43K 29/20 |
· | with other articles having storage compartments (with lighters Fulltext... Hierarchy... Expanded...B43K 29/16; writing implements functioning as, or combined with, writing implement receptacles Fulltext... Hierarchy... Expanded...B43K 31/00)

P:10 |  | B43K 31/00 |
Writing implement receptacles functioning as, or combined with, writing implements (other writing implement receptacles Fulltext... Hierarchy... Expanded...A45C 11/34, Fulltext... Hierarchy... Expanded...A45C 11/36)