B61G COUPLINGS; DRAUGHT AND BUFFING APPLIANCES (vehicle connections in general B60D)
Introduced: September 1968
Description
B61G covers mechanical couplings and shock-absorbing devices specifically designed for joining and cushioning impacts between railway vehicles and train sets. This includes coupler heads, drawbars, buffer systems, and associated hardware that facilitate train formation while mitigating longitudinal forces during acceleration, braking, and coupling operations. The classification extends to both automatic and manual coupling mechanisms as well as the structural components that transmit draft and buffering forces between adjacent vehicles.
Title
Titles differ between systems:
IPC: COUPLINGS SPECIALLY ADAPTED FOR RAILWAY VEHICLES; DRAUGHT OR BUFFING APPLIANCES SPECIALLY ADAPTED FOR RAILWAY VEHICLES
CPC: COUPLINGS; DRAUGHT AND BUFFING APPLIANCES (vehicle connections in general B60D)
Full Title
Full titles differ between systems:
COUPLINGS SPECIALLY ADAPTED FOR RAILWAY VEHICLES; DRAUGHT OR BUFFING APPLIANCES SPECIALLY ADAPTED FOR RAILWAY VEHICLES
COUPLINGS; DRAUGHT AND BUFFING APPLIANCES (vehicle connections in general B60D)
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
Navigate with arrow keys, Enter to open
- B61G 1/00 Couplings comprising interengaging parts of different shape or form and having links, bars, pins, shackles, or hooks as coupling means IPC+CPC Available in IPC and CPC
- B61G 3/00 Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements IPC+CPC Available in IPC and CPC
- B61G 5/00 Couplings for special purposes not otherwise provided for IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B61,2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS MOBILITY DE 2,749
- CRRC QINGDAO SIFANG COMPANY 2,215
- SIEMENS DE 1,941
- ALSTOM TRANSPORT TECHNOLOGIES FR 1,514
- BYD COMPANY 1,371
- CRRC CHANGCHUN RAILWAY VEHICLES COMPANY 1,205
- CRRC ZHUZHOU LOCOMOTIVE COMPANY 1,165
- CRRC TANGSHAN COMPANY 1,119
- BOMBARDIER TRANSPORTATION DE 1,001
- SOUTHWEST JIAOTONG UNIVERSITY 958
Top Applicants (CPC)
Class B61,2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS MOBILITY DE 2,967
- SIEMENS DE 2,133
- ALSTOM TRANSPORT TECHNOLOGIES FR 1,691
- CRRC QINGDAO SIFANG COMPANY 1,100
- BOMBARDIER TRANSPORTATION DE 1,085
- MITSUBISHI ELECTRIC CORPORATION JP 880
- BYD COMPANY 821
- KRRI KR 761
- HITACHI JP 752
- CRRC ZHUZHOU LOCOMOTIVE COMPANY 721