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ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
Definition statement
This subclass/group covers:

Abrasive or related blasting with particulate material, whereby a blast of any particles or pellets dispersed in air, gas, or liquid ( or an equivalent jet of particles or pellets projected or energised by other means ) is used for the treatment of surfaces or cutting of materials, the particles usually being of abrasive material.

Blasting with jets acting as abrasive jets, but not containing particulate material in the case of deburring, removal of extended surface areas and jet milling of local recessions like e.g. grooves.

Relationship between large subject matter areas

- Abrasive machining

Subclass B24B of grinding and polishing complements the abrasive blasting with particulate material, which is covered by B24C.Polishing or abrading surfaces by means of tumbling apparatuses or other apparatuses in which the work or the abrasive material is loose, are covered by main group B24B 31/00.Abrading internal surfaces, e.g. of a tube or a flow channel, by operations in which a plastically deformable grinding compound is used as a loose abrasive material under the influence of pressure, known in the art as abrasive flow machining, extrude honing or hydro-erosive machining, is covered by group B24B 31/116 when the dynamic viscosity of the carrier medium is higher than that of conventional fuels such as diesel. When the dynamic viscosity of the carrier is less than or equal to that of conventional fuel (e.g. when water is used as a carrier), the machining is considered as particulate blasting of an internal surface, which is covered by B24C 3/325 and its subgroups.

- Spraying or atomising, nozzles

Spraying or atomising in general and nozzles in general are covered by subclass B05B.

Nozzles specially adapted for blasting surfaces with a jet of particulate material are covered by group B24C 5/04.

- Abrasive materials and polishing compositions

Abrasive particles, powders or compositions in general are covered by groups C09K 3/14 and C09G 1/00. Polishing compositions in general when they contain abrasives or grinding agents are covered by C09G 1/02. When used as materials for abrasive blasting, they are covered by B24C 11/00.

References relevant to classification in this subclass
This subclass/group does not cover:
Energy dissipating devices for cutting jets with or without particles, known in the art as catcher tanks
Blasting semiconductor devices e.g. with a jet of particulate matter acting like sand blasting
Dental tools or instruments acting like a sandblast machine
Producing decorative effects by removing surface-material using streams of abrasive particles
Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Perforating by means of a fluid jet without particles
Severing by means of a fluid jet without particles
Cleaning in general; prevention of fouling in general
Cleaning by the force of jets or sprays without particles
Sonic or ultrasonic cleaning
Processes employing sonic or ultrasonic vibrations
Application of shock-waves
Cavitation peening. Treating or finishing by hammering or applying repeated pressure
Shot-peening for deforming sheet metal, tubes or profiles
Shot-peening as a metallurgical treatment of iron or steel
Shot-peening as a metallurgical treatment of non-ferrous material
Peening when the peening media is guided on its path during the peening action
Nozzles in general, Spraying or atomising in general
Jet flame processing in general
Production of stencils for photo mask processing
Stripping of photosensitive material
Implements or apparatus for removing dry paint from surfaces, e.g. by scraping
Machines or devices for scraping
Earth drilling by liquid or gas jets, with or without entrained pellets
Recycling of tires
Controlling; regulating, e.g. cutting control, pierce-through measurement
Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
Definition statement
This subclass/group covers:

Abrasive blasting methods for producing particular effects and also devices configured to perform these methods.

Example(s): US20080076328, EP0015470, WO20060097133.

[N: using material which dissolves or changes phase after the treatment e.g. ice, CO2]
Definition statement
This subclass/group covers:

Example(s): US20100192655, US20060089090, DE1020040023246.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Production, working, storing or distributing of ice
Solidifying carbon dioxide
for sharpening or cleaning cutting tools, e.g. files
Definition statement
This subclass/group covers:

Example(s): WO9735686, EP1792691.

for treating only selected parts of a surface, e.g. for carving stone or glass
Definition statement
This subclass/group covers:

Example(s): US 20100269593, US20070259606.

for cutting (energy dissipating devices therefor B26F 3/008)
Definition statement
This subclass/group covers:

Example(s): GB2400893, US20030065424.

References relevant to classification in this group
This subclass/group does not cover:
Energy dissipating devices for cutting jets with or without particles, known in the art as catcher tanks
Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Controlling; regulating, e.g. cutting control, pierce-through measurement
for producing matt surfaces, e.g. on plastic materials, on glass
Definition statement
This subclass/group covers:

Example(s): EP1803532, US7131303, JP20040230549, EP0811582.

for polishing surfaces, e.g. [N: smoothing a surface] by making use of liquid-borne abrasives
Definition statement
This subclass/group covers:

Example(s): EP2132001.

[N: Deburring]
Definition statement
This subclass/group covers:

Example(s): US20040168494, EP1839801, WO20080044613.

[N: Descaling; Removing coating films]
Definition statement
This subclass/group covers:

Example(s): US20080108281, US20030219621, US20030116649.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Cleaning by the force of jets or sprays without particles
for compacting surfaces, e.g. shot-peening (for deforming sheet metal, tubes or profiles B21D 31/06; as a metallurgical treatment C21D 7/00, C22F 1/00)
Definition statement
This subclass/group covers:

Example(s): FR2689431, EP0359277, US4258084, DE1020080011243.

References relevant to classification in this group
This subclass/group does not cover:
Peening when the peening media is guided on its path during the peening action

Examples of places where the subject matter of this group is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Shot-peening for deforming sheet metal, tubes or profiles
Shot-peening as a metallurgical treatment of iron or steel
Shot-peening as a metallurgical treatment of non-ferrous material
Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Application of shock-waves
Cavitation peening. Treating or finishing by hammering or applying repeated pressure
Abrasive blasting machines or devices; Plants
Definition statement
This subclass/group covers:

Abrasive blasting machines and plants.

References relevant to classification in this group
This subclass/group does not cover:
Aspects of machines related to the processes of group B24C 1/00 and its subgroups
Aspects of machines related to the processes of dry ice blasting and blasting with salt dissolving during or after blasting
Aspects of machines related to the process of shot peening
characterised by the arrangement of the component assemblies with respect to each other (B24C 3/08, B24C 3/18 take precedence)
Definition statement
This subclass/group covers:

Also machines with intersecting and swinging or swivelling nozzles.

Example(s): US6604986 (intersecting nozzles), US20040162009, DE1020070006673 (swinging nozzles).

stationary
Definition statement
This subclass/group covers:

also devices with rotating nozzles.

Example(s): DE1020070033788 (robot), WO20100119201 (rotating nozzles), WO9114539, US20060049285 (rotating nozzles), US20060135041 (gantry type), DE1020080027217

movable; portable
Definition statement
This subclass/group covers:

Example(s): US5191740, US5216849, WO9505922 (road barrier), US20080287039, WO20060097133 (handheld), US5181349 (handheld), EP1207235 (road vehicle), WO0048901, EP0795380 (corner), EP2038088 (portable), US5248436 (from helicopter or ship).

[N: for vertical surfaces]
Definition statement
This subclass/group covers:

also blasting of surfaces that are not strictly vertical.

Example(s): FR2891175 (ship hull, airplane hull).

Special rules of classification within this group

Blasting of surfaces that are not strictly vertical and containing devices with suction means are additionally classified in B24C 3/065.

[N: Self-contained units for floorings]
Definition statement
This subclass/group covers:

Devices with suction means and horizontal working plane for treating floorings.

Example(s): FR2564769.

essentially adapted for abrasive blasting of travelling stock or travelling workpieces
Definition statement
This subclass/group covers:

Example(s): US5512005, US5417608

References relevant to classification in this group
This subclass/group does not cover:
Machines or devices where the workpieces are transported or agitated by troughed belt conveyors
[N: for travelling bundles of wires]
Definition statement
This subclass/group covers:

Example(s): GB1149317.

[N: Transfer or feeding devices; Accessories therefor]
Definition statement
This subclass/group covers:

Example(s): EP0227275, EP0100944, GB1080030.

[N: the travelling workpieces being moved into different working positions during travelling]
Definition statement
This subclass/group covers:

Example(s): EP2178677, US20080258367, US20080209731.

References relevant to classification in this group
This subclass/group does not cover:
Machines or devices where the workpieces are transported or agitated by troughed belt conveyors
[N: whereby the workpieces are turned through a rotational arc of about 180 degrees]
Definition statement
This subclass/group covers:

Example(s): CH614656.

[N: using a vibratory transfer mechanism]
Definition statement
This subclass/group covers:

Example(s): DE4435333, DE1020080011663, US20030186626.

for treating external surfaces
Definition statement
This subclass/group covers:

Example(s): US20050204528

References relevant to classification in this group
This subclass/group does not cover:
Machines or devices where the workpieces are transported or agitated by troughed belt conveyors
Apparatus using nozzles
Definition statement
This subclass/group covers:

Example(s): US20050255795, US4251956, US20030219621.

Apparatus using impellers
Definition statement
This subclass/group covers:

Example(s): US4566230

for treating internal surfaces
Definition statement
This subclass/group covers:

Example(s): US20080209731, DE4342593.

essentially provided with means for moving workpieces into different working positions (B24C 3/08 takes precedence)
Definition statement
This subclass/group covers:

Example(s): EP1045743, EP0523462, EP0248096.

the work being supported by turn-tables
Definition statement
This subclass/group covers:

Example(s): US20060189265.

Apparatus using nozzles
Definition statement
This subclass/group covers:

Example(s): EP0927773, WO9735686, US5272897.

Apparatus using impellers
Definition statement
This subclass/group covers:

Example(s): US6726548, DE4408643, DE4415094.

the work being supported by barrel cages, i.e. tumblers; Gimbal mountings therefor
Definition statement
This subclass/group covers:

Example(s): JP60034270, EP1172177, WO20040048036.

[N: using refrigerating means]
Definition statement
This subclass/group covers:

Example(s): US6059640.

[N: for continuously travelling workpieces]
Definition statement
This subclass/group covers:

Example(s): CH665987, US4218854, US4003164.

Apparatus using nozzles
Definition statement
This subclass/group covers:

Example(s): GB851361.

Apparatus using impellers
Definition statement
This subclass/group covers:

Example(s): GB592600.

designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks (B24C 3/08, B24C 3/18 take precedence)
Definition statement
This subclass/group covers:

Example(s): EP1754573, WO9505922, GB2249045, US20030070693 (method for cleaning and injection mould), US5512007 (flexible connection), DE4408645 (springs).

Special rules of classification within this group

Contrary to the take-precedence-rules in the title of this subgroup, documents relating to the aspects of subgroup B24C 3/08 (abrasive blasting of traveling or moving workpieces) and documents relating to the aspects of subgroup B24C 3/18 (with means for moving workpieces into different working positions) are covered in this subgroup B24C 3/32 when additionally relating to the aspects of this subgroup B24C 3/32 (designed for abrasive blasting of particular work).

[N: for electrical components]
Definition statement
This subclass/group covers:

Example(s): WO9528256 (blasting of CRT), US5916738, US20100068976 (blasting of motor conductors).

References relevant to classification in this subclass
This subclass/group does not cover:
Blasting semiconductor devices e.g. with a jet of particulate matter acting like sand blasting
[N: for internal surfaces, e.g. of tubes]
Definition statement
This subclass/group covers:

Example(s): DE1020070006661, EP1898003 (blasting of tunnel walls), EP1901894, US20040162009 (internal blasting of motor block), DE10341029, US20020179119 (internal blasting of concrete mixer), US6402854, EP1423237, GB850045, DE4015412.

by an axially-moving flow of abrasive particles without passing a blast gun, impeller or the like along the internal surface (polishing or abrading surfaces using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure B24B 31/116)
Definition statement
This subclass/group covers:

Blasting of internal surfaces with particulate matter and without passing a blast gun, impeller or the like along the internal surface.The flow is considered as blasting only when the dynamic viscosity of the carrier is less than or equal to that of conventional fuels like diesel, e.g. when water is used as a carrier.

Example(s): EP1312432, US5391256, DE4420579.

References relevant to classification in this group
This subclass/group does not cover:
Machining of internal surfaces with plastically deformable grinding compound, i.e. when the dynamic viscosity of the carrier medium is higher than that of conventional fuels like diesel
for cleaning sparking plugs
Definition statement
This subclass/group covers:

Example(s): US3704552, US3913273.

Devices or accessories for generating abrasive blasts
Definition statement
This subclass/group covers:

e.g. abrasive blasting with particles by jet flame processing.

Example(s): GB938025, US4616787, EP1539424 (jet flame abrasive blasting) EP1155781.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Jet flame processing in general
[N: Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations (sonic cleaning in general B08B 3/12 )]
Definition statement
This subclass/group covers:

Example(s): EP1207013, FR2689431.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Sonic cleaning in general
Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials [N: (perforating by fluid jet B26F 1/26 )]
Definition statement
This subclass/group covers:

Example(s): US7341504, US20060276112, DE19804233, US5908349, US4932592, EP0083614.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Perforating by means of a fluid jet without particles
Severing by means of a fluid jet without particles
Nozzles therefor (nozzles in general B05B)
Definition statement
This subclass/group covers:

Example(s): EP1574290, FR2866586, DE10243855, WO03103899, EP1178873, US20030045217, US6695686, US5704825, US5484325.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Nozzles in general, Spraying or atomising in general
Impeller wheels; Rotor blades therefor
Definition statement
This subclass/group covers:

Example(s): WO20070072863, WO0239078, US6126516, US5779524, DE3505468.

[N: Rotor blades or vanes; Locking means therefor]
Definition statement
This subclass/group covers:

Example(s): EP1352713, US5759091, EP0688633, GB985743, GB1101107, US4069025.

[N: One-piece wheels; Integral impeller units, e.g. made by casting]
Definition statement
This subclass/group covers:

Example(s): EP1412133, US4244150.

[N: Housings; Accessories therefor, e.g. liners]
Definition statement
This subclass/group covers:

Example(s): US6692340, WO0200393, US5076028.

[N: Transferring the abrasive particles from the feeding means onto the propeller blades, e.g. using central impellers]
Definition statement
This subclass/group covers:

Example(s): EP1360035, EP1354667, US5688162.

Devices for generating abrasive blasts non-mechanically, e.g. of metallic abrasives by means of a magnetic field [N: or by detonating cords]
Definition statement
This subclass/group covers:

Example(s): US20040259473 (magnetically), US5211135 (detonation cord clusters for deslagging water boilers).

References relevant to classification in this group
This subclass/group does not cover:
Informative references
Attention is drawn to the following places, which may be of interest for search:

Attention is drawn to the following places, which may be of interest for search and classification:

Jet flame processing in general
Abrasive blasting by jet flame processing
Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
Definition statement
This subclass/group covers:

Equipment for feeding and controlling the characteristics of abrasive blasting material

[N: the abrasive material being fed in a liquid carrier]
Definition statement
This subclass/group covers:

Example(s): EP0322485, GB731117, EP1557223.

[N: with control of feed parameters, e.g. feed rate of abrasive material or carrier]
Definition statement
This subclass/group covers:

Example(s): DE19933339, US5283991.

[N: of feed pressure]
Definition statement
This subclass/group covers:

Example(s): US20070207702, JP59001167.

[N: with means for preventing clogging of the equipment]
Definition statement
This subclass/group covers:

Example(s): GB1424896.

[N: the blasting medium being a gaseous stream]
Definition statement
This subclass/group covers:

Example(s): DE10260257, DE4335382.

[N: the abrasive material being fed in a gaseous carrier]
Definition statement
This subclass/group covers:

Example(s): DE1020070039540.

[N: with control of feed parameters, e.g. feed rate of abrasive material or carrier]
Definition statement
This subclass/group covers:

Example(s): DE10235097, US20070287126, EP2001637.

[N: of feed pressure]
Definition statement
This subclass/group covers:

Example(s): EP0992221, US5081799.

[N: with means for preventing clogging of the equipment or for preventing abrasive entering the airway]
Definition statement
This subclass/group covers:

Example(s): EP1851003, WO20040101224, WO9635389, EP0652078, US4569161, US3858360.

[N: the blasting medium being a liquid stream]
Definition statement
This subclass/group covers:

Example(s): DE10348805, US4666083, US4218855.

[N: the abrasive material being fed in a mixture of liquid and gas (B24C 7/0038, B24C 7/0076 take precedence; blasting medium with additives B24C 11/005 )]
Definition statement
This subclass/group covers:

E.g. blasting where the abrasive is first mixed with liquid and a gas and then the mixture is fed and propelled to the working surface, or where the abrasive is added to a premixed flow of liquid and gas, or where a shrouding water curtain or water jet is added to the mixture jet of gas and abrasive.

Example(s): US20110053464, US20110053464, US5283991, WO9408753, GB498478, DE1020040023246.

References relevant to classification in this group
This subclass/group does not cover:
Blasting with abrasive, liquid and gas, where either the gas or the liquid is used as a blasting medium to propel the mixture of the other two constituents
Blasting with abrasive, liquid and gas, where one of the constituents is used as an additive
[N: the abrasive material being fed by mechanical means, e.g. by screw conveyors]
Definition statement
This subclass/group covers:

Example(s): DE10317663, DE3445643, GB2108399, JP58202777, WO20090096122.

Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
Definition statement
This subclass/group covers:

Example(s): EP2335852, US20110053458, DE1020080011663, US20060260823, DE10216468, US5367841, US4882881, US4139970.

[N: Removing abrasive powder out of the blasting machine]
Definition statement
This subclass/group covers:

Example(s): DE19926084, DE4407956.

[N: Treatment of used abrasive material]
Definition statement
This subclass/group covers:

Example(s): EP1603709 GB2367777, US4275531, GB2337953.

Selection of abrasive materials [N: or additives] for abrasive blasts (polishing compositions C09G)
Definition statement
This subclass/group covers:

Example(s): WO20110052287, WO20090110231, US20060111023, JP57194878, US5344472, EP0798081.

References relevant to classification in this group
This subclass/group does not cover:
Selection of abrasive material which changes phase after treatment
[N: of additives, e.g. anti-corrosive or disinfecting agents in solid, liquid or gaseous form]
Definition statement
This subclass/group covers:

Example(s): GB2403726, EP1422026.

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Last Modified: 10/11/2013