CPC Subgroup
B66D 5/02 Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
Full Title
Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads (for pulley blocks B66D3/10) > Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
8 direct subcodes
Child Classifications
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- B66D 5/04 actuated by centrifugal force
- B66D 5/06 with radial effect (B66D5/20 takes precedence)
- B66D 5/12 with axial effect (B66D5/22 takes precedence)
- B66D 5/16 for action on ropes or cables
- B66D 5/18 for generating braking forces which are proportional to the loads suspended; Load-actuated brakes
- B66D 5/24 Operating devices
Top Applicants
Top 10 applicants by patent filingsfor 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