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IPC Subgroup
B66B 1/24

Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration

Introduced: September 1968

Last revised: January 2006

Full Title

Control systems of elevators in general > Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration

Classification Context

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

Related Keywords

influencing ACCELERATION of liftsBRAKING of lift cagesLEVELLING of lift cagesinfluencing SPEED of liftsSTOPPING cages of lifts

2 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 3,843
  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