DIFF Subgroup
B66D 1/48 automatic
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Rope, cable, or chain winding mechanisms; Capstans > Other constructional details > Control devices > automatic
CPC:
Rope, cable, or chain winding mechanisms; Capstans (portable or mobile lifting or hauling appliances B66D3/00) > Other constructional details > Control devices > automatic
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- B66D 1/50 for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control +1 CPC IPC+CPC Available in IPC and CPC
- B66D 1/52 for varying rope or cable tension, e.g. when recovering craft from water +1 CPC IPC+CPC Available in 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