Mounting or securing axle-boxes in vehicle or bogie underframes

Introduced: September 1968

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 > Mounting or securing axle-boxes in vehicle or bogie underframes

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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B61F 5/28 Axle-boxes integral with, or directly secured to, vehicle or bogie underframes IPC+CPC Available in IPC and CPC
B61F 5/30 Axle-boxes mounted for movement under spring control in vehicle or bogie underframes +4 CPC 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