in which the clutching pressure is produced by springs only

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Friction clutches > with axially-movable clutching members > with conical friction surfaces > in which the or each axially-movable member is pressed exclusively against an axially-located member > with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member > in which the clutching pressure is produced by springs only

CPC:

Friction clutches (arrangements for synchronisation F16D23/02) > with axially-movable clutching members (similar brakes F16D55/00) > with conical friction surfaces > in which the or each axially-movable member is pressed exclusively against an axially-located member > with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member > in which the clutching pressure is produced by springs only

No child classifications to compare. This is a leaf node in both 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