B61D BODY DETAILS OR KINDS OF RAILWAY VEHICLES (vehicles in general B60; adaptation of vehicles to special systems B61B; underframes B61F)
Introduced: September 1968
Description
B61D covers the structural design, construction details, and classification of railway vehicle bodies, including passenger cars, freight wagons, and specialized train units. This subclass encompasses bodywork components such as frames, walls, roofs, floors, doors, windows, couplings, and interior fittings that define the physical form and functional characteristics of rail vehicles. It includes provisions for different vehicle types—such as coaches, dining cars, sleeping cars, and cargo wagons—as well as safety and comfort features integrated into the body structure. Adjacent classes address propulsion systems (B61C), running gear and suspension (B61E), and control/braking mechanisms (B61H), whereas B61D focuses specifically on the vehicle envelope and body-level design elements.
Title
Titles differ between systems:
IPC: BODY DETAILS OR KINDS OF RAILWAY VEHICLES
CPC: BODY DETAILS OR KINDS OF RAILWAY VEHICLES (vehicles in general B60; adaptation of vehicles to special systems B61B; underframes B61F)
Full Title
Full titles differ between systems:
BODY DETAILS OR KINDS OF RAILWAY VEHICLES
BODY DETAILS OR KINDS OF RAILWAY VEHICLES (vehicles in general B60; adaptation of vehicles to special systems B61B; underframes B61F)
IPC and CPC are identically structured here. All 24 subcodes exist in both systems.
12 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B61D 1/00 Carriages for ordinary railway passenger traffic (mine cars B61D11/00; tramcars B61D13/00) IPC+CPC Available in IPC and CPC
- B61D 15/00 Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways (conveyor frames mounted for movement on rail tracks B65G41/02; wheeled machines used in permanent way construction or maintenance E01B) IPC+CPC Available in IPC and CPC
- B61D 17/00 Construction details of vehicle bodies (for tank wagons B61D5/00; for hopper cars B61D7/00; body details specially adapted for tipping wagons B61D9/06; for mine cars B61D11/00) +1 CPC IPC+CPC Available in IPC and CPC
- B61D 19/00 Door arrangements specially adapted for rail vehicles (locks for vehicles E05B77/00-E05B85/00; door-operating mechanisms E05F) +2 CPC IPC+CPC Available in IPC and CPC
- B61D 23/00 Construction of steps for railway vehicles (ladders in general E06C) IPC+CPC Available in IPC and CPC
- B61D 25/00 Window arrangements peculiar to rail vehicles (vehicle window arrangements in general B60J; cleaning vehicle windows B60S; heating arrangements specially adapted for transparent or reflecting areas H05B3/84) IPC+CPC Available in IPC and CPC
- B61D 27/00 Heating, cooling, ventilating, or air-conditioning +5 CPC IPC+CPC Available in IPC and CPC
- B61D 3/00 Wagons or vans (tank wagons B61D5/00; hopper wagons B61D7/00; tipping wagons B61D9/00; mine cars B61D11/00; vehicles specially adapted for animal transportation B60P3/04; ) +1 CPC IPC+CPC Available in IPC and CPC
- B61D 39/00 Wagon or like covers; Tarpaulins; Movable or foldable roofs +4 CPC IPC+CPC Available in IPC and CPC
- B61D 41/00 Indicators for reserved seats; Warning or like signs; Devices or arrangements in connection with tickets, e.g. ticket holders; Holders for cargo tickets or the like IPC+CPC Available in IPC and CPC
- B61D 43/00 Devices for using the energy of the movements of the vehicles IPC+CPC Available in IPC and CPC
- B61D 45/00 Means or devices for securing or supporting the cargo, including protection against shocks (for vehicles in general B60P7/00) +4 CPC IPC+CPC Available in IPC and CPC
- B61D 47/00 Loading or unloading devices combined with vehicles, e.g. loading platforms, (combined with vehicles in general B60P) +1 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