B61J SHIFTING OR SHUNTING OF RAIL VEHICLES
Introduced: September 1968
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- RAILWAYS
- Subclass:
- SHIFTING OR SHUNTING OF RAIL VEHICLES
Description
B61J covers apparatus and methods for shifting, moving, or shunting individual rail vehicles or trains within rail yards, depots, and sidings. This includes mechanical, hydraulic, and electrical systems for coupling, uncoupling, and repositioning rail cars, as well as specialized equipment such as retarders, buffers, and propulsion devices used in marshalling operations. The classification excludes general railway vehicle design (B61D) and track-switching mechanisms (B61L), focusing specifically on the equipment and techniques that facilitate the tactical movement of rolling stock.
Related Keywords
3 direct subcodes
Child Classifications
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- B61J 1/00 Turntables; Traversers; Transporting rail vehicles on other rail vehicles or dollies
- B61J 3/00 Shunting or short-distance haulage devices; Similar devices for hauling trains on steep gradients or as starting aids; Car-propelling devices therefor
- B61J 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