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IPC Subgroup
B66D 1/395

by means effecting both guiding and tensioning of ropes, cables or chains

Introduced: January 1980

Last revised: January 2006

Full Title

Rope, cable, or chain winding mechanisms; Capstans > Other constructional details > Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains > by means effecting both guiding and tensioning of ropes, cables or chains

Classification Context

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

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