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CPC Subclass Not Allocatable
B61G

COUPLINGS; DRAUGHT AND BUFFING APPLIANCES (vehicle connections in general B60D)

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.

6 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class B61, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SIEMENS MOBILITY DE 2,967
  2. SIEMENS DE 2,133
  3. ALSTOM TRANSPORT TECHNOLOGIES FR 1,691
  4. CRRC QINGDAO SIFANG COMPANY 1,100
  5. BOMBARDIER TRANSPORTATION DE 1,085
  6. MITSUBISHI ELECTRIC CORPORATION JP 880
  7. BYD COMPANY 821
  8. KRRI KR 761
  9. HITACHI JP 752
  10. CRRC ZHUZHOU LOCOMOTIVE COMPANY 721