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IPC Subgroup
B23B 31/02

Chucks

Introduced: September 1968

Last revised: January 2006

Full Title

Chucks; Expansion mandrels; Adaptations thereof for remote control > Chucks

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
Subclass:
TURNING; BORING

Related Keywords

CHUCK(S)VACUUM chucks

9 direct subcodes

Child Classifications

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  • B23B 31/08 holding tools or work yieldably
  • B23B 31/32 with jaws carried by diaphragm
  • B23B 31/34 with means enabling the workpiece to be reversed or tilted
  • B23B 31/36 with means for adjusting the chuck with respect to the working-spindle
  • B23B 31/38 with overload clutches
  • B23B 31/39 Jaw changers

Top Applicants

Top 10 applicants by patent filingsfor class B23, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ITW (ILLINOIS TOOL WORKS) US 3,407
  2. FANUC JP 3,120
  3. DISCO ABRASIVE SYSTEM 2,777
  4. HAN'S LASER TECHNOLOGY INDUSTRY GROUP COMPANY 2,629
  5. ROBERT BOSCH DE 2,468
  6. FANUC 2,273
  7. DISCO CORPORATION JP 2,267
  8. GE (GENERAL ELECTRIC COMPANY) US 1,611
  9. CHINESE ACADEMY OF SCIENCES 1,534
  10. ISCAR IL 1,499