B24D TOOLS FOR GRINDING, BUFFING OR SHARPENING
Introduced: September 1968
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- GRINDING; POLISHING
- Subclass:
- TOOLS FOR GRINDING, BUFFING OR SHARPENING
Description
B24D covers abrasive tools and grinding wheels designed for material removal, surface finishing, and edge preparation operations. This subclass encompasses rotating wheels, stones, and mounted abrasives used in grinding machines, as well as honing and sharpening tools for cutlery and industrial implements. Included are various abrasive compositions, grain types, and bonding materials that affect tool performance and durability. Related grinding machine designs and their operational mechanisms are classified separately under B24B.
Additional Content
Glossary
grinding Grinding means machining by fixed abrasive particles in its most general sense and covers "corrective" operations, such as correction of dimension, e.g. diameter, or shape, e.g. roundness. It is characterised by a comparatively high material removal rate. polishing Polishing means abrading a work so as to improve, e.g. smoothen, its surface, without substantial change of dimension or shape of the work as would occur in grinding.
Limiting references
Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls Honing tools Lapping tools
Application references
Floor surfacing or polishing machines with driven tools Grinding discs or grinding worms specially adapted for use in machines for manufacturing gear teeth Tools specially designed, e.g. bowl-like, for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work
Related Keywords
9 direct subcodes
Child Classifications
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- B24D 11/00 Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D 13/00 Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D 15/00 Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D 18/00 Manufacture of grinding tools, e.g. wheels, not otherwise provided for
- B24D 3/00 Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D 5/00 Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D 7/00 Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D 9/00 Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D 99/00 Subject matter not provided for in other groups of this subclass
Top Applicants
Top 10 applicants by patent filingsfor class B24, 2013–2023, worldwide · Source: EPO PATSTAT
- DISCO ABRASIVE SYSTEM 3,084
- APPLIED MATERIALS US 1,570
- EBARA CORPORATION JP 1,393
- DISCO CORPORATION JP 1,368
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,270
- EBARA CORPORATION 1,016
- FUJIMI JP 829
- ZHEJIANG UNIVERSITY OF TECHNOLOGY 804
- ROBERT BOSCH DE 803
- SAINT-GOBAIN ABRASIVES US 781