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PCE
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DIFF Subgroup
F16B 39/28

by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by special members on, or shape of, the nut or bolt

CPC: by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12)

Full Title

Full titles differ between systems:

IPC:

Locking of screws, bolts, or nuts > in which the locking takes place during screwing down or tightening > by special members on, or shape of, the nut or bolt

CPC:

Locking of screws, bolts or nuts (; locking of bottle closures B65D; locking of rail-fastening bolts for permanent ways E01B9/12; locking of fastening means for railway fishplates E01B11/38; locking devices for valves or cocks F16K) > in which the locking takes place during screwing down or tightening (F16B39/01 takes precedence) > by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12)

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • F16B 39/30 Locking exclusively by special shape of the screw-thread IPC+CPC Available in IPC and CPC
  • F16B 39/32 Locking by means of a pawl or pawl-like tongue IPC+CPC Available in IPC and CPC
  • F16B 39/34 Locking by deformable inserts or like parts IPC+CPC Available in IPC and CPC
  • F16B 39/36 with conical locking parts, which may be split, including use of separate rings co-operating therewith IPC+CPC Available in IPC and CPC
  • F16B 39/38 with a second part of the screw-thread which may be resiliently mounted (F16B39/30 takes precedence) 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