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PCE
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DIFF Subgroup
F16L 37/32

at least one of two lift valves being opened automatically when the coupling is applied

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Couplings of the quick-acting type > with fluid cut-off means > with fluid cut-off means in each of two pipe-end fittings > at least one of two lift valves being opened automatically when the coupling is applied

CPC:

Couplings of the quick-acting type ( radially-binding sleeves F16L17/04, F16L21/06; connecting hoses to rigid members F16L33/00) > with fluid cut-off means > with fluid cut-off means in each of two pipe-end fittings > at least one of two lift valves being opened automatically when the coupling is applied

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 1990.

Child Classifications

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  • F16L 37/33 the lift valves being of the ball type since 2000 IPC+CPC Available in IPC and CPC
  • F16L 37/34 at least one of the lift valves being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall since 1990 IPC+CPC Available in IPC and CPC
  • F16L 37/35 at least one of the valves having an axial bore communicating with lateral apertures since 2000 IPC+CPC Available in IPC and CPC

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