IPC Main Group
B66B 13/00 Doors, gates, or other apparatus controlling access to, or exit from, cages or lift-well landings
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- HOISTING; LIFTING; HAULING
- Subclass:
- ELEVATORS; ESCALATORS OR MOVING WALKWAYS
Related Keywords
doors and gates controlling ACCESS to lift cages or lift wellsCONTROL(S) systems for elevatorsDOOR(S) for lifts, cages or lift-wellsGATES of lift cages or for lift wells
4 direct subcodes
Child Classifications
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- B66B 13/02 Door or gate operation
- B66B 13/22 Operation of door or gate contacts
- B66B 13/24 Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B 13/3 Constructional features of doors or gates
Top Applicants
Top 10 applicants by patent filingsfor class B66, 2013–2023, worldwide · Source: EPO PATSTAT
- INVENTIO CH 3,843
- OTIS ELEVATOR COMPANY US 3,709
- SGCC(STATE GRID CORPORATION OF CHINA) 2,987
- KONE CORPORATION FI 2,922
- TOSHIBA ELEVATOR COMPANY 2,922
- HITACHI 2,321
- MITSUBISHI ELECTRIC CORPORATION JP 2,287
- MITSUBISHI ELECTRIC CORPORATION 1,870
- HITACHI BUILDING SYSTEMS COMPANY 1,700
- ANHUI HELI COMPANY 1,325