by varying brake lever leverage

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Actuating rail-vehicle brakes > Transmitting mechanisms > adjustable to take account of variation of vehicle weight > by varying brake lever leverage

CPC:

Actuating rail-vehicle brakes > Transmitting mechanisms > adjustable to take account of variation of vehicle weight (arrangements for adjusting wheel-braking force in response to vehicle weight or load B60T8/18) > by varying brake lever leverage

No child classifications to compare. This is a leaf node in both 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