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IPC Subgroup
B66C 13/32

for operating grab-bucket hoists by means of one or more electric motors used both for hoisting and lowering the loads and for opening and closing the bucket jaws

Introduced: September 1968

Last revised: January 2006

Full Title

Other constructional features or details > Control systems or devices > for electric drives > for operating grab-bucket hoists by means of one or more electric motors used both for hoisting and lowering the loads and for opening and closing the bucket jaws

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
HOISTING; LIFTING; HAULING
Subclass:
CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES

3 direct subcodes

Child Classifications

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  • B66C 13/34 through differential or planetary gearing
  • B66C 13/36 Single-motor-drive control systems
  • B66C 13/38 Systems controlling independent motors

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