B66B 13/20 Lock mechanisms actuated mechanically by abutments or projections on the cages
Introduced: September 1968
Full Title
Full titles differ between systems:
Doors, gates, or other apparatus controlling access to, or exit from, cages or lift-well landings > Door or gate operation > Control systems or devices > Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position > without manually-operable devices for completing locking or unlocking of doors > Lock mechanisms actuated mechanically by abutments or projections on the cages
Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings (door fittings, locks E05) > Door or gate operation (of general application E05F) > Control systems or devices > Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position > without manually-operable devices for completing locking or unlocking of doors > Lock mechanisms actuated mechanically by abutments or projections on the cages
No child classifications to compare. This is a leaf node in both IPC and CPC.
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
Class B66,2013–2023, worldwide · Source: EPO PATSTAT
- INVENTIO CH 3,939
- OTIS ELEVATOR COMPANY US 3,810
- KONE CORPORATION FI 3,008
- MITSUBISHI ELECTRIC CORPORATION JP 2,333
- MITSUBISHI ELECTRIC CORPORATION 1,254
- HITACHI 1,195
- OTIS ELEVATOR COMPANY 1,065
- SGCC(STATE GRID CORPORATION OF CHINA) 961
- INVENTIO 828
- CROWN EQUIPMENT CORPORATION US 828