| B | SK | PERFORMING OPERATIONS; TRANSPORTING |
| B28 | KL | WORKING CEMENT, CLAY, OR STONE |
| B28C | UKL | PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER (preparing material for foundry moulds B22C 5/00) |
| B28C 1/00 | HGR | Apparatus or methods for obtaining or processing clay (filtration in general B01D; separation of solids from solids B03 , B07; chemical part C04B; by mining or quarrying E21C 41/16 , E21C 41/26 , E21C 47/10) |
| B28C 1/02 | UGR1 | | . | for producing or processing clay suspensions (producing or processing suspensions in general B01) |
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| B28C 1/04 | UGR2 | | . . | Producing suspensions, e.g. by blunging |
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| B28C 1/06 | UGR2 | | . . | Processing suspensions |
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| B28C 1/08 | UGR3 | | . . . | Separating suspensions, e.g. for obtaining clay, for removing stones (filtration in general B01D; separation of solids from solids B03 , B07) |
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| B28C 1/10 | UGR1 | | . | for processing clay-containing substances in non-fluid condition (clay slurries B28C 1/02) |
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| B28C 1/12 | UGR2 | | . . | Storing and conditioning in storage; Specially adapted storage spaces or devices for their filling or emptying (feeding clay to shaping apparatus B28B 13/00) |
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| B28C 1/14 | UGR2 | | . . | specially adapted for homogenising, comminuting or conditioning clay in non-fluid condition or for separating undesired admixtures therefrom (processes involving conversion to a slurry B28C 1/02; conditioning in storage B28C 1/12; comminuting in general B02C; chemical features in eliminating iron or lime C04B) |
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| B28C 1/16 | UGR3 | | . . . | for homogenising, e.g. by mixing, kneading |
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| B28C 1/18 | UGR3 | |
| B28C 1/20 | UGR3 | | . . . | for separating undesired admixed bodies |
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| B28C 1/22 | UGR3 | | . . . | combined with means for conditioning by heating, humidifying, or vacuum treatment |
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| B28C 3/00 | HGR | Apparatus or methods for mixing clay with other substances (producing clay suspensions B28C 1/02) |
| B28C 5/00 | HGR | Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions (controlling the mixing apparatus and supplying the ingredients B28C 7/00) |
| B28C 5/02 | UGR1 | | . | without using driven mechanical means effecting the mixing (B28C 5/48 takes precedence) [5] |
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| B28C 5/04 | UGR2 | | . . | Gravitational mixing; Mixing by intermingling streams of ingredients (ingredients projected by fluid pressure B28C 5/06) |
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| B28C 5/06 | UGR2 | | . . | the mixing being effected by the action of a fluid (in combination with driven mechanical means B28C 5/38) |
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| B28C 5/08 | UGR1 | |
| B28C 5/10 | UGR2 | | . . | Mixing in containers not actuated to effect the mixing |
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| B28C 5/12 | UGR3 | | . . . | with stirrers sweeping through the materials |
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| B28C 5/14 | UGR4 | | . . . . | the stirrers having motion about a horizontal or substantially horizontal axis |
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| B28C 5/16 | UGR4 | | . . . . | the stirrers having motion about a vertical or steeply inclined axis |
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| B28C 5/18 | UGR2 | | . . | Mixing in containers to which motion is imparted to effect the mixing |
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| B28C 5/20 | UGR3 | | . . . | rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers |
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| B28C 5/22 | UGR4 | | . . . . | with stirrers held stationary |
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| B28C 5/24 | UGR4 | | . . . . | with driven stirrers |
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| B28C 5/26 | UGR3 | | . . . | rotating about a vertical or steeply inclined axis during the mixing |
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| B28C 5/28 | UGR4 | | . . . . | without independent stirrers |
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| B28C 5/30 | UGR4 | | . . . . | with stirrers held stationary |
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| B28C 5/32 | UGR4 | | . . . . | with driven stirrers |
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| B28C 5/34 | UGR2 | | . . | Mixing on or by conveyers |
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| B28C 5/36 | UGR3 | |
| B28C 5/38 | UGR1 | | . | wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means |
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| B28C 5/40 | UGR1 | | . | Mixing specially adapted for preparing mixtures containing fibres |
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| B28C 5/42 | UGR1 | | . | Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport (vehicle aspect B60P 3/16) |
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| B28C 5/44 | UGR1 | | . | Apparatus specially adapted for drive by muscle power |
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| B28C 5/46 | UGR1 | | . | Arrangements for applying super- or sub-atmospheric pressure during mixing; Arrangements for cooling or heating during mixing |
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| B28C 5/48 | UGR1 | | . | wherein the mixing is effected by vibrations (mixers with vibrating mechanisms in general B01F 11/00) [5] |
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| B28C 7/00 | HGR | Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture |
| B28C 7/02 | UGR1 | | . | Controlling the operation of the mixing |
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| B28C 7/04 | UGR1 | | . | Supplying or proportioning the ingredients |
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| B28C 7/06 | UGR2 | | . . | Supplying the solid ingredients, e.g. by means of endless conveyers or jigging conveyers |
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| B28C 7/08 | UGR3 | | . . . | by means of scrapers or skips |
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| B28C 7/10 | UGR3 | | . . . | by means of rotary members |
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| B28C 7/12 | UGR2 | | . . | Supplying or proportioning liquid ingredients |
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| B28C 7/14 | UGR1 | | . | Supply means incorporated in or mounted on mixers |
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| B28C 7/16 | UGR1 | |
| B28C 9/00 | ZWE |
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| B28C 9/00 | HGR | General arrangement or layout of plant [2] |
| B28C 9/02 | UGR1 | | . | for producing mixtures of clay or cement with other materials [2] |
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| B28C 9/04 | UGR1 | | . | the plant being mobile (B28C 5/42 takes precedence) [2] |
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