CPC Subgroup Additional Only
F15B 2211/3133 Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
Full Title
Circuits for servomotor systems > Directional control > characterised by the positions of the valve element > Special positions other than the pump port being connected to working ports or the working ports being connected to the return line > Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
Top Applicants
Top 10 applicants by patent filingsfor class F15, 2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 1,281
- SMC CORPORATION JP 865
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 814
- KYB CORPORATION JP 584
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 536
- CATERPILLAR US 532
- FESTO & COMPANY DE 486
- JOHN DEERE US 419
- KAWASAKI HEAVY IND JP 368
- HAMILTON SUNDSTRAND US 368