Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
B23Q 5/12

Mechanical drives with means for varying the speed ratio

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Driving or feeding mechanisms; Control arrangements therefor > Driving main working members > rotary shafts, e.g. working-spindles > Mechanical drives with means for varying the speed ratio

CPC:

Driving or feeding mechanisms; Control arrangements therefor (automatic control B23Q15/00; copying B23Q33/00, B23Q35/00; specially adapted for boring or drilling machines B23B39/10, B23B47/00 ) > Driving main working members > rotary shafts, e.g. working-spindles > Mechanical drives with means for varying the speed ratio

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

Navigate with arrow keys, Enter to open

  • B23Q 5/18 Devices for preselecting speed of working-spindle IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class B23,2013–2023, worldwide · Source: EPO PATSTAT

  1. ITW (ILLINOIS TOOL WORKS) US 3,642
  2. DISCO CORPORATION JP 3,316
  3. FANUC JP 3,111
  4. ROBERT BOSCH DE 2,711
  5. FANUC 2,163
  6. GE (GENERAL ELECTRIC COMPANY) US 2,113
  7. ISCAR IL 1,516
  8. SIEMENS DE 1,459
  9. LINCOLN GLOBAL US 1,433
  10. KOBE STEEL JP 1,423