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PCE
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DIFF Subgroup
F16K 31/38

in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side (F16K31/40 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side

CPC: in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side (F16K31/40 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Operating means; Releasing devices > actuated by fluid > in which fluid from the conduit is constantly supplied to the fluid motor > in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side

CPC:

Operating means; Releasing devices > actuated by fluid ( ; fluid-actuated check valves F16K15/00; fluid-actuated safety valves F16K17/00) > in which fluid from the circuit is constantly supplied to the fluid motor > in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side (F16K31/40 takes precedence)

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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Top Applicants

Top Applicants (IPC)

Class F16,2013–2023, worldwide · Source: EPO PATSTAT

  1. SCHAEFFLER TECHNOLOGIES & COMPANY DE 21,545
  2. ZAHNRADFABRIK FRIEDRICHSHAFEN DE 9,446
  3. TOYOTA MOTOR CORPORATION 7,215
  4. HYUNDAI MOTOR COMPANY KR 6,846
  5. ROBERT BOSCH DE 6,106
  6. NTN CORPORATION 5,305
  7. SKF SE 4,219
  8. KIA MOTORS CORPORATION KR 3,852
  9. NSK 3,850
  10. HONDA MOTOR COMPANY 3,639

Top Applicants (CPC)

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