B61C LOCOMOTIVES; MOTOR RAILCARS (vehicles in general B60; frames or bogies B61F; special railroad equipment for locomotives B61J, B61K)
Introduced: September 1968
Description
B61C covers the design, construction, and mechanical systems of locomotives and self-propelled rail vehicles used for hauling trains. This includes steam locomotives, diesel locomotives, electric locomotives, and motor railcars—whether powered by internal combustion engines, electric motors, or other propulsion systems. The classification encompasses structural components, driving mechanisms, boiler systems, fuel systems, transmission systems, and auxiliary equipment integral to locomotive operation. Related track infrastructure and coupling systems are classified elsewhere in B61, as are signaling, braking control systems addressed as separate functional domains.
Title
Titles differ between systems:
IPC: LOCOMOTIVES; MOTOR RAILCARS
CPC: LOCOMOTIVES; MOTOR RAILCARS (vehicles in general B60; frames or bogies B61F; special railroad equipment for locomotives B61J, B61K)
Full Title
Full titles differ between systems:
LOCOMOTIVES; MOTOR RAILCARS
LOCOMOTIVES; MOTOR RAILCARS (vehicles in general B60; frames or bogies B61F; special railroad equipment for locomotives B61J, B61K)
IPC and CPC are identically structured here. All 10 subcodes exist in both systems.
7 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B61C 1/00 Steam locomotives or railcars (engines F01; characterised by power transmissions B61C9/00; boilers F22B) IPC+CPC Available in IPC and CPC
- B61C 11/00 Locomotives or motor railcars characterised by the type of means applying the tractive effort; Arrangement or disposition of running gear other than normal driving wheel (constructions wheels B60B) +1 CPC IPC+CPC Available in IPC and CPC
- B61C 13/00 Locomotives or motor railcars characterised by their application to special systems or purposes (B61C11/00 takes precedence; self-propelled scaffold cars, break-down cranes, inspection trolleys B61D15/00; general design of track recording vehicles B61K9/00) IPC+CPC Available in IPC and CPC
- B61C 15/00 Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels (propelling locomotives or motor railcars by special means B61C11/00; driving wheels with non-slipping devices B60B; brakes B61H; wetting or lubricating rails B61K) IPC+CPC Available in IPC and CPC
- B61C 17/00 Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems IPC+CPC Available in IPC and CPC
- B61C 3/00 Electric locomotives or railcars (characterised by power transmission B61C9/00; electrical features B60L; H02) IPC+CPC Available in IPC and CPC
- B61C 5/00 Locomotives or motor railcars with IC engines or gas turbines (characterised by power transmission B61C9/00; engines F02) IPC+CPC Available in IPC and CPC
- B61C 7/00 Other locomotives or motor railcars characterised by the type of motive power plant used; Locomotives or motor railcars with two or more different kinds or types of motive power IPC+CPC Available in IPC and CPC
- B61C 8/00 Filling stations for steam- or pneumatic-accumulator locomotives or motor railcars IPC+CPC Available in IPC and CPC
- B61C 9/00 Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars (machine elements F16) 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