CPC Subgroup
B61F 5/38 Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
Full Title
Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves > Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
7 direct subcodes
Child Classifications
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- B61F 5/40 Bogies with side frames mounted for longitudinal relative movements
- B61F 5/42 Adjustment controlled by buffer or coupling gear
- B61F 5/44 Adjustment controlled by movements of vehicle body
- B61F 5/46 Adjustment controlled by a sliding axle under the same vehicle underframe
- B61F 5/48 Trailing or leading bogies for locomotives or motor- driven railcars (B61F5/40 takes precedence)
Top Applicants
Top 10 applicants by patent filingsfor 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