F16D 3/26 Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected (F16D3/18, F16D3/20 take precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected
CPC: Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected (F16D3/18, F16D3/20 take precedence)
Full Title
Full titles differ between systems:
Yielding couplings, i.e. with means permitting movement between the connected parts during the drive > Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts > Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected
Yielding couplings, i.e. with means permitting movement between the connected parts during the drive (couplings disconnectable simply by axial movement F16D1/10; slip couplings F16D7/00) > Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts > Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected (F16D3/18, F16D3/20 take precedence)
Of 7 combined children, 5 exist in both systems.
1 codes are CPC-only extensions, 1 exist only in IPC.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F16D 3/27 with two or more intermediate members pivotally or slidably connected together, e.g. tongue-and-slipper type joints since 1990 IPC only IPC only
- F16D 3/28 in which the interconnecting pivots include elastic members IPC+CPC Available in IPC and CPC
- F16D 3/30 in which the coupling is specially adapted to constant velocity-ratio IPC+CPC Available in IPC and CPC
- F16D 3/36 in which each pivot between the coupling parts and the intermediate member comprises a single ball IPC+CPC Available in IPC and CPC
- F16D 3/38 with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another (F16D3/36 takes precedence) +1 CPC IPC+CPC Available in IPC and CPC
- F16D 3/44 the intermediate member being connected to the coupling parts by ridges, pins, balls, or the like guided in grooves or between cogs IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F16,2013–2023, worldwide · Source: EPO PATSTAT
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 21,545
- ZAHNRADFABRIK FRIEDRICHSHAFEN DE 9,446
- TOYOTA MOTOR CORPORATION 7,215
- HYUNDAI MOTOR COMPANY KR 6,846
- ROBERT BOSCH DE 6,106
- NTN CORPORATION 5,305
- SKF SE 4,219
- KIA MOTORS CORPORATION KR 3,852
- NSK 3,850
- HONDA MOTOR COMPANY 3,639
Top Applicants (CPC)
Class F16,2013–2023, worldwide · Source: EPO PATSTAT
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 22,817
- ZAHNRADFABRIK FRIEDRICHSHAFEN DE 10,523
- HYUNDAI MOTOR COMPANY KR 7,933
- ROBERT BOSCH DE 7,059
- KIA MOTORS CORPORATION KR 4,867
- SKF SE 4,729
- TOYOTA MOTOR CORPORATION JP 4,111
- FORD GLOBAL TECHNOLOGIES US 3,838
- GM GLOBAL TECHNOLOGY OPERATIONS US 3,575
- TOYOTA MOTOR CORPORATION 3,499