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DIFF Subgroup
B66C 13/32

for operating grab bucket hoists by means of one or more electric motors used both for hosting and lowering the loads and for opening and closing the bucket jaws (other aspects or rope, cable, or chain winding mechanisms specially adapted for actuating grab buckets B66D1/62)

Introduced: September 1968

Title

Titles differ between systems:

IPC: for operating grab-bucket hoists by means of one or more electric motors used both for hoisting and lowering the loads and for opening and closing the bucket jaws

CPC: for operating grab bucket hoists by means of one or more electric motors used both for hosting and lowering the loads and for opening and closing the bucket jaws (other aspects or rope, cable, or chain winding mechanisms specially adapted for actuating grab buckets B66D1/62)

Full Title

Full titles differ between systems:

IPC:

Other constructional features or details > Control systems or devices > for electric drives > for operating grab-bucket hoists by means of one or more electric motors used both for hoisting and lowering the loads and for opening and closing the bucket jaws

CPC:

Other constructional features or details > Control systems or devices (exclusively for rope, cable, or chain winding mechanisms B66D1/40) > for electric drives (transmitting control pulses B66C13/40; systems or devices of general application H02P) > for operating grab bucket hoists by means of one or more electric motors used both for hosting and lowering the loads and for opening and closing the bucket jaws (other aspects or rope, cable, or chain winding mechanisms specially adapted for actuating grab buckets B66D1/62)

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

Child Classifications

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  • B66C 13/34 through differential or planetary gearing IPC+CPC Available in IPC and CPC
  • B66C 13/36 Single-motor-drive control systems IPC+CPC Available in IPC and CPC
  • B66C 13/38 Systems controlling independent motors 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