B61F RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES (for vehicles in general B60; axles or wheels B60B; vehicle tyres B60C)
Introduced: September 1968
Description
B61F encompasses suspension systems and structural frameworks for rail vehicles, including underframes, bogies, and wheel axle arrangements that support and stabilize the vehicle body. This classification covers mechanical solutions for track compatibility issues, such as rail vehicles designed to operate on different gauge tracks, as well as safety devices including derailment prevention systems, wheel guards, and obstruction removal equipment. Applications range from freight and passenger locomotive suspensions to specialized coupling and mounting arrangements that manage vehicle dynamics on railway infrastructure.
Title
Titles differ between systems:
IPC: RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
CPC: RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES (for vehicles in general B60; axles or wheels B60B; vehicle tyres B60C)
Full Title
Full titles differ between systems:
RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES (for vehicles in general B60; axles or wheels B60B; vehicle tyres B60C)
IPC and CPC are identically structured here. All 11 subcodes exist in both systems.
5 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B61F 1/00 Underframes (making railway vehicle underframes by forging or pressing B21K7/12) IPC+CPC Available in IPC and CPC
- B61F 11/00 Rail vehicles characterised by rail-engaging elements other than wheels, e.g. balls IPC+CPC Available in IPC and CPC
- B61F 13/00 Rail vehicles characterised by wheel arrangements, not otherwise provided for IPC+CPC Available in IPC and CPC
- B61F 15/00 Axle-boxes (mounting or securing axle-boxes B61F5/26; lubrication B61F17/00; bearings in general F16C) IPC+CPC Available in IPC and CPC
- B61F 17/00 Lubrication specially adapted for axle-boxes of rail vehicles (lubrication in general F16N) IPC+CPC Available in IPC and CPC
- B61F 19/00 Wheel guards; Bumpers; Obstruction removers or the like (for vehicles in general B60R19/00) IPC+CPC Available in IPC and CPC
- B61F 5/00 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 IPC+CPC Available in IPC and CPC
- B61F 7/00 Rail vehicles equipped for use on tracks of different width IPC+CPC Available in IPC and CPC
- B61F 9/00 Rail vehicles characterised by means for preventing derailing, e.g. by use of guide wheels +1 CPC IPC+CPC Available in IPC and CPC
- B61F 99/00 Subject matter not provided for in other groups of this subclass since 2006 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