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IPC Subgroup
B66B 1/46

Adaptations of switches or switchgear

Introduced: September 1968

Last revised: January 2006

Full Title

Control systems of elevators in general > Details > Adaptations of switches or switchgear

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
HOISTING; LIFTING; HAULING
Subclass:
ELEVATORS; ESCALATORS OR MOVING WALKWAYS

Additional Content

Electric switches; Relays; Selectors; Emergency protective devices

Related Keywords

electric SWITCH(ES) adapted for lift systems

3 direct subcodes

Child Classifications

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  • B66B 1/48 Adaptations of mechanically-operated limit switches
  • B66B 1/5 with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway
  • B66B 1/52 Floor selectors

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