B66C CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ( rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21)
Introduced: September 1968
Description
B66C covers crane systems and their load-handling components, encompassing fixed, mobile, and floating cranes along with associated mechanical devices for lifting and transporting heavy loads. It includes load-engaging elements such as hooks, grabs, magnets, and spreader bars, as well as auxiliary equipment like capstans and winches used in conjunction with cranes. The subclass also addresses structural features, control mechanisms, and safety systems integral to crane operation, but excludes specialized lifting devices covered by other classes such as jacks (B66F) or elevators (B66B).
Title
Titles differ between systems:
IPC: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
CPC: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ( rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21)
Full Title
Full titles differ between systems:
CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ( rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21)
Of 15 combined children, 14 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
13 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B66C 1/00 Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles (fastening to cables or ropes F16G11/00) IPC+CPC Available in IPC and CPC
- B66C 11/00 Trolleys or crabs, e.g. operating above runways (runways, tracks or trackways therefor B66C7/00; winch mechanisms B66D) IPC+CPC Available in IPC and CPC
- B66C 15/00 Safety gear (for rope, cable, or chain winding mechanisms B66D1/54) IPC+CPC Available in IPC and CPC
- B66C 17/00 Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports IPC+CPC Available in IPC and CPC
- B66C 19/00 Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries (B66C17/00 takes precedence; base supporting structures with legs B66C5/00; jib cranes B66C23/00) +3 CPC IPC+CPC Available in IPC and CPC
- B66C 21/00 Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways (rope or cable drives for trolleys, combinations of such drives with hoisting gear B66C11/16; railway systems B61B; rope or cable winding mechanisms B66D1/00) IPC+CPC Available in IPC and CPC
- B66C 23/00 Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes (base supporting structures with legs B65C5/00) +2 CPC IPC+CPC Available in IPC and CPC
- B66C 25/00 Cranes not provided for in groups B66C17/00 - B66C23/00 since 2006 IPC+CPC Available in IPC and CPC
- B66C 3/00 Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs (buckets and other containers B65D, e.g. pallets B65D19/00; dredges equipped with grabs E02F) +1 CPC IPC+CPC Available in IPC and CPC
- B66C 6/00 Girders, or track-supporting structures, specially adapted for cranes (base supporting structures with legs B66C5/00; girders in general E04C3/02) IPC+CPC Available in IPC and CPC
- B66C 9/00 Travelling gear incorporated in or fitted to trolleys or cranes (; for dredgers E02F) 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