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DIFF Subgroup
B66B 1/36

Means for stopping the cars, cages, or skips at predetermined levels

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Control systems of elevators in general > Details > Means for stopping the cars, cages, or skips at predetermined levels

CPC:

Control systems of elevators in general (safety devices B66B5/00; controlling door or gate operation B66B13/00; systems of general application G05) > Details > Means for stopping the cars, cages, or skips at predetermined levels

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • B66B 1/365 CPC only CPC only
  • B66B 1/38 and for returning the controlling handle or lever to its neutral position IPC+CPC Available in IPC and CPC
  • B66B 1/44 and for taking account of disturbance factors, e.g. variation of load weight IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B66,2013–2023, worldwide · Source: EPO PATSTAT

  1. INVENTIO CH 3,843
  2. OTIS ELEVATOR COMPANY US 3,709
  3. SGCC(STATE GRID CORPORATION OF CHINA) 2,987
  4. KONE CORPORATION FI 2,922
  5. TOSHIBA ELEVATOR COMPANY 2,922
  6. HITACHI 2,321
  7. MITSUBISHI ELECTRIC CORPORATION JP 2,287
  8. MITSUBISHI ELECTRIC CORPORATION 1,870
  9. HITACHI BUILDING SYSTEMS COMPANY 1,700
  10. ANHUI HELI COMPANY 1,325

Top Applicants (CPC)

Class B66,2013–2023, worldwide · Source: EPO PATSTAT

  1. INVENTIO CH 3,939
  2. OTIS ELEVATOR COMPANY US 3,810
  3. KONE CORPORATION FI 3,008
  4. MITSUBISHI ELECTRIC CORPORATION JP 2,333
  5. MITSUBISHI ELECTRIC CORPORATION 1,254
  6. HITACHI 1,195
  7. OTIS ELEVATOR COMPANY 1,065
  8. SGCC(STATE GRID CORPORATION OF CHINA) 961
  9. INVENTIO 828
  10. CROWN EQUIPMENT CORPORATION US 828