| B | SK | PERFORMING OPERATIONS; TRANSPORTING |
| B04 | KL | CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES |
| B04B | UKL | CENTRIFUGES (high-speed drum mills B02C 19/11; domestic spin driers D06F; analysing, measuring or monitoring physical or chemical properties of samples during centrifuging, see the relevant subclasses for these procedures, e.g. G01N) |
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| B04B 1/00 | HGR | Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles |
| B04B 1/02 | UGR1 | | . | without inserted separating walls |
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| B04B 1/04 | UGR1 | | . | with inserted separating walls |
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| B04B 1/06 | UGR2 | |
| B04B 1/08 | UGR2 | |
| B04B 1/10 | UGR1 | | . | with discharging outlets in the plane of the maximum diameter of the bowl |
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| B04B 1/12 | UGR2 | | . . | with continuous discharge |
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| B04B 1/14 | UGR2 | | . . | with periodical discharge |
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| B04B 1/16 | UGR3 | | . . . | with discharging outlets controlled by the rotational speed of the bowl |
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| B04B 1/18 | UGR4 | | . . . . | controlled by the centrifugal force of an auxiliary liquid |
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| B04B 1/20 | UGR1 | | . | discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl |
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| B04B 3/00 | HGR | Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneously sifting or filtering |
| B04B 3/02 | UGR1 | | . | discharging solid particles from the bowl by means co-axial with the bowl axis and moving to and fro, i.e. push-type centrifuges |
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| B04B 3/04 | UGR1 | | . | discharging solid particles from the bowl by a conveying screw co-axial with the bowl axis and rotating relatively to the bowl |
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| B04B 3/06 | UGR1 | | . | discharging solid particles by vibrating the bowl |
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| B04B 3/08 | UGR1 | | . | discharging solid particles by bowl walls in the form of endless bands |
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| B04B 5/00 | HGR | Other centrifuges |
| B04B 5/02 | UGR1 | | . | Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls |
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| B04B 5/04 | UGR1 | | . | Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers |
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| B04B 5/06 | UGR1 | | . | Centrifugal counter-current apparatus |
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| B04B 5/08 | UGR1 | | . | Centrifuges for separating predominantly gaseous mixtures |
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| B04B 5/10 | UGR1 | | . | Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges (B04B 5/12 takes precedence; magnetic or electrostatic separators B03C) [2] |
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| B04B 5/12 | UGR1 | | . | Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers |
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| B04B 7/00 | HGR | Elements of centrifuges (drives B04B 9/00; feeding, charging, or discharging accessories or devices B04B 11/00) |
| B04B 7/02 | UGR1 | | . | Casings; Lids (shock absorbers, vibration dampers F16F) |
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| B04B 7/04 | UGR2 | | . . | Casings facilitating discharge |
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| B04B 7/06 | UGR2 | |
| B04B 7/08 | UGR1 | | . | Rotary bowls (centrifugal casting machines B22D) |
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| B04B 7/10 | UGR2 | | . . | Bowls for shaping solids |
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| B04B 7/12 | UGR2 | | . . | Inserts, e.g. armouring plates |
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| B04B 7/14 | UGR3 | | . . . | for separating walls of conical shape |
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| B04B 7/16 | UGR3 | | . . . | Sieves or filters (filters in general B01D; sieves in general B07B) |
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| B04B 7/18 | UGR2 | | . . | formed or coated with sieving or filtering elements (filters in general B01D; sieves in general B07B) |
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| B04B 9/00 | HGR | Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls |
| B04B 9/02 | UGR1 | |
| B04B 9/04 | UGR2 | |
| B04B 9/06 | UGR1 | |
| B04B 9/08 | UGR1 | | . | Arrangement or disposition of transmission gearing |
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| B04B 9/10 | UGR1 | | . | Control of the drive; Speed regulating |
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| B04B 9/12 | UGR1 | |
| B04B 9/14 | UGR1 | | . | Balancing rotary bowls (balancing in general G01M) |
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| B04B 11/00 | HGR | Feeding, charging, or discharging bowls (B04B 1/00 , B04B 3/00 , B04B 7/04 take precedence) |
| B04B 11/02 | UGR1 | | . | Continuous feeding or discharging; Control arrangements therefor |
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| B04B 11/04 | UGR1 | | . | Periodical feeding or discharging; Control arrangements therefor |
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| B04B 11/05 | UGR2 | |
| B04B 11/06 | UGR1 | | . | Arrangement of distributors or collectors in centrifuges |
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| B04B 11/08 | UGR1 | | . | Skimmers or scrapers for discharging |
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| B04B 13/00 | HGR | Control arrangements specially designed for centrifuges; Programme control of centrifuges (control arrangements for feed, charge, or discharge B04B 11/00) |
| B04B 15/00 | HGR | Other accessories for centrifuges |
| B04B 15/02 | UGR1 | | . | for cooling, heating, or heat insulating |
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| B04B 15/04 | UGR1 | | . | for suppressing the formation of foam |
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| B04B 15/06 | UGR1 | | . | for cleaning bowls, filters, sieves, inserts, or the like |
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| B04B 15/08 | UGR1 | | . | for ventilating or producing a vacuum in the centrifuge |
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| B04B 15/10 | UGR1 | | . | for forming a filtering layer in the rotary bowl |
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| B04B 15/12 | UGR1 | | . | for drying or washing the separated solid particles |
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