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DIFF Subgroup
B66B 1/48

Adaptations of mechanically-operated limit switches (for cranes B66C13/50; for winding mechanisms B66D1/56)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Adaptations of mechanically-operated limit switches

CPC: Adaptations of mechanically-operated limit switches (for cranes B66C13/50; for winding mechanisms B66D1/56)

Full Title

Full titles differ between systems:

IPC:

Control systems of elevators in general > Details > Adaptations of switches or switchgear > Adaptations of mechanically-operated limit switches

CPC:

Control systems of elevators in general (safety devices B66B5/00; controlling door or gate operation B66B13/00; systems of general application G05) > Details > Adaptations of switches or switchgear (switches or switchgear in general, applications of switches or switchgear for floor-levelling purpose H01H; panels for boards or switching arrangements H02B1/015) > Adaptations of mechanically-operated limit switches (for cranes B66C13/50; for winding mechanisms B66D1/56)

Additional Content IPC

Applications of limit circuits or of limit-switch arrangement for controlling cranes, capstans, winches or tackles Capstans or winding mechanism using safety gear limit switches

No child classifications to compare. This is a leaf node in both 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