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IPC Subgroup
B23B 31/1

characterised by the retaining or gripping devices or their immediate operating means

Introduced: September 1968

Last revised: January 2006

Full Title

Chucks; Expansion mandrels; Adaptations thereof for remote control > Chucks > characterised by the retaining or gripping devices or their immediate operating means

Classification Context

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

6 direct subcodes

Child Classifications

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  • B23B 31/103 Retention by pivotal elements, e.g. catches, pawls
  • B23B 31/107 Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
  • B23B 31/11 Retention by threaded connection
  • B23B 31/113 Retention by bayonet connection
  • B23B 31/117 Retention by friction only, e.g. using springs, resilient sleeves, tapers

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