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

Introduced: September 1968

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: RAILWAYS
Subclass:: 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

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.

Related Keywords

BOGIES for rail vehicleslubrication of RAILWAY(S),RAILROAD(S) vehiclesRAILWAY(S),RAILROAD(S) vehicle underframes or suspensionssuspensions peculiar to RAILWAY(S),RAILROAD(S) vehiclesSPRING(S) suspension arrangements for rail vehiclesSTUB axlesSUSPENSION(S) for rail vehiclesUNDERCARRIAGES for rail vehiclessuspensions peculiar to railway VEHICLES

11 direct subcodes

Child Classifications

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B61F 1/00 Underframes
B61F 11/00 Rail vehicles characterised by rail-engaging elements other than wheels, e.g. balls
B61F 13/00 Rail vehicles characterised by wheel arrangements, not otherwise provided for
B61F 15/00 Axle-boxes
B61F 17/00 Lubrication specially adapted for axle-boxes of rail vehicles
B61F 19/00 Wheel guards; Bumpers; Obstruction removers or the like
B61F 3/00 Types of bogies
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
B61F 7/00 Rail vehicles equipped for use on tracks of different width
B61F 9/00 Rail vehicles characterised by means for preventing derailing, e.g. by use of guide wheels
B61F 99/00 Subject matter not provided for in other groups of this subclass

Top Applicants

Top 10 applicants by patent filingsfor 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