DIFF Main Group
B61G 1/00 Couplings comprising interengaging parts of different shape or form and having links, bars, pins, shackles, or hooks as coupling means
Introduced: September 1968
IPC and CPC are identically structured here. All 8 subcodes exist in both systems.
Child Classifications
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- B61G 1/02 having links or bars coupling or uncoupling by rotating around a transverse horizontal axis IPC+CPC Available in IPC and CPC
- B61G 1/10 having links or bars coupling or uncoupling by rotating around a vertical axis IPC+CPC Available in IPC and CPC
- B61G 1/18 having links or bars coupling or uncoupling by rotating axially +1 CPC IPC+CPC Available in IPC and CPC
- B61G 1/22 having screws incorporated in the links for lengthening or shortening the couplings IPC+CPC Available in IPC and CPC
- B61G 1/36 with shackles and hooks, e.g. specially adapted for mine cars IPC+CPC Available in IPC and CPC
- B61G 1/40 with coupling bars having an enlarged or recessed end which slips into the opposite coupling part and is gripped thereby, e.g. arrow-head type; with coupling parts having a tong-like gripping action 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