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PCE
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CPC Subgroup
B66D 3/04

Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00)

Full Title

Portable or mobile lifting or hauling appliances > Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves F16H55/00)

3 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class B66, 2013–2023, worldwide · Source: EPO PATSTAT

  1. INVENTIO CH 3,939
  2. OTIS ELEVATOR COMPANY US 3,810
  3. KONE CORPORATION FI 3,008
  4. MITSUBISHI ELECTRIC CORPORATION JP 2,333
  5. MITSUBISHI ELECTRIC CORPORATION 1,254
  6. HITACHI 1,195
  7. OTIS ELEVATOR COMPANY 1,065
  8. SGCC(STATE GRID CORPORATION OF CHINA) 961
  9. INVENTIO 828
  10. CROWN EQUIPMENT CORPORATION US 828