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IPC Subgroup
B66D 5/02

Crane, lift, hoist, or winch brakes operating on drums, barrels, or ropes

Introduced: September 1968

Last revised: January 2006

Full Title

Braking or detent devices characterised by their application to lifting or hoisting gear, e.g. for controlling the lowering of loads > Crane, lift, hoist, or winch brakes operating on drums, barrels, or ropes

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
HOISTING; LIFTING; HAULING
Subclass:
CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS

Filing statistics

IPC B66D 5/02 belongs to the parent subclass B66D, which recorded 48,091 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,533 in 2013 to 5,601 in 2023 (+121%), peaking at 6,453 applications in 2020. The most active applicants in class B66 are INVENTIO (3,843 applications), OTIS ELEVATOR COMPANY (3,709 applications) and SGCC(STATE GRID CORPORATION OF CHINA) (2,987 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

brakes for CRANE(S)brakes for hoistsLIFT(S) brakes

6 direct subcodes

Child Classifications

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  • B66D 5/04 actuated by centrifugal force
  • B66D 5/16 for action on ropes or cables

Top Applicants

Top 10 applicants by patent filingsfor 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