B66C 13/34 through differential or planetary gearing
Introduced: September 1968
Full Title
Full titles differ between systems:
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 > through differential or planetary gearing
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) > through differential or planetary gearing
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
- INVENTIO CH 3,843
- OTIS ELEVATOR COMPANY US 3,709
- SGCC(STATE GRID CORPORATION OF CHINA) 2,987
- KONE CORPORATION FI 2,922
- TOSHIBA ELEVATOR COMPANY 2,922
- HITACHI 2,321
- MITSUBISHI ELECTRIC CORPORATION JP 2,287
- MITSUBISHI ELECTRIC CORPORATION 1,870
- HITACHI BUILDING SYSTEMS COMPANY 1,700
- ANHUI HELI COMPANY 1,325
Top Applicants (CPC)
Class B66,2013–2023, worldwide · Source: EPO PATSTAT
- INVENTIO CH 3,939
- OTIS ELEVATOR COMPANY US 3,810
- KONE CORPORATION FI 3,008
- MITSUBISHI ELECTRIC CORPORATION JP 2,333
- MITSUBISHI ELECTRIC CORPORATION 1,254
- HITACHI 1,195
- OTIS ELEVATOR COMPANY 1,065
- SGCC(STATE GRID CORPORATION OF CHINA) 961
- INVENTIO 828
- CROWN EQUIPMENT CORPORATION US 828