B07B SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
Introduced: September 1968
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- SEPARATING SOLIDS FROM SOLIDS; SORTING
- Subclass:
- SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
Description
B07B encompasses dry separation and sorting methods for bulk solids, including mechanical sieving, screening, sifting, and air classification techniques. This subclass covers equipment and processes that separate particulate materials, granules, or discrete articles by size, density, or aerodynamic properties without using liquids. Applications range from mineral processing and agricultural commodity handling to recycling and industrial powder classification, excluding wet separation methods and liquid-based sorting systems covered elsewhere in the B07 hierarchy.
Additional Content
Limiting references
Separating isotopes Combinations of dry separating apparatus with wet separating apparatus or pneumatic tables Separating solids from solids using pneumatic tables or jigs Hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material
Application references
Grading or sorting of eggs , Machines for sorting heel lifts in shoe-making Sorting arrangements forhandling work specially combined with, or arranged in, or specially adapted for use in connection with, machine tools Straining or screening of pulp in paper-making Rotary screen-drums used in paper-making Sorting of coins
Related Keywords
7 direct subcodes
Child Classifications
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- B07B 1/00 Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B 11/00 Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B 13/00 Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B 15/00 Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material
- B07B 4/00 Separating solids from solids by subjecting their mixture to gas currents
- B07B 7/00 Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B 9/00 Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
Top Applicants
Top 10 applicants by patent filingsfor class B07, 2013–2023, worldwide · Source: EPO PATSTAT
- ANHUI JIEXUN OPTOELECTRONIC TECHNOLOGY COMPANY 444
- HENAN WINNER VIBRATING EQUIPMENT COMPANY 386
- DERRICK CORPORATION US 370
- SOLYSTIC FR 359
- XINXIANG ZHEN YING MACHINERY EQUIPMENT COMPANY 347
- ANHUI UNIVERSITY OF SCIENCE & TECHNOLOGY 288
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY 269
- CHINA TOBACCO HENAN INDUSTRIAL 230
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 230
- XINXIANG GAOFU MACHINERY COMPANY 229