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CPC Subgroup
F16H 61/40

hydrostatic

Full Title

Control functions within change-speed- or reversing-gearings for conveying rotary motion > Control of exclusively fluid gearing > hydrostatic

15 direct subcodes

Child Classifications

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  • F16H 61/4035 Control of circuit flow
  • F16H 61/4061 Control related to directional control valves, e.g. change-over valves, for crossing the feeding conduits
  • F16H 61/4069 Valves related to the control of neutral, e.g. shut off valves
  • F16H 61/4148 Open loop circuits
  • F16H 61/4157 Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
  • F16H 61/4165 Control of cooling or lubricating
  • F16H 61/4174 Control of venting, e.g. removing trapped air
  • F16H 61/4183 Preventing or reducing vibrations or noise, e.g. avoiding cavitations
  • F16H 61/4192 Detecting malfunction or potential malfunction, e.g. fail safe

Top Applicants

Top 10 applicants by patent filingsfor class F16, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SCHAEFFLER TECHNOLOGIES & COMPANY DE 22,817
  2. ZAHNRADFABRIK FRIEDRICHSHAFEN DE 10,523
  3. HYUNDAI MOTOR COMPANY KR 7,933
  4. ROBERT BOSCH DE 7,059
  5. KIA MOTORS CORPORATION KR 4,867
  6. SKF SE 4,729
  7. TOYOTA MOTOR CORPORATION JP 4,111
  8. FORD GLOBAL TECHNOLOGIES US 3,838
  9. GM GLOBAL TECHNOLOGY OPERATIONS US 3,575
  10. TOYOTA MOTOR CORPORATION 3,499