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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

  1. ROBERT BOSCH DE 1,281
  2. SMC CORPORATION JP 865
  3. HITACHI CONSTRUCTION MACHINERY COMPANY JP 814
  4. KYB CORPORATION JP 584
  5. SCHAEFFLER TECHNOLOGIES & COMPANY DE 536
  6. CATERPILLAR US 532
  7. FESTO & COMPANY DE 486
  8. JOHN DEERE US 419
  9. KAWASAKI HEAVY IND JP 368
  10. HAMILTON SUNDSTRAND US 368