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IPC Main Group
F16D 25/00

Fluid-actuated clutches

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
Subclass:
COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

6 direct subcodes

Child Classifications

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  • F16D 25/02 with means for actuating or keeping engaged by a force derived at least partially from one of the shafts to be connected
  • F16D 25/04 in which the fluid actuates an elastic clutching member, e.g. a diaphragm or a pneumatic tube
  • F16D 25/08 with fluid-actuated member not rotating with a clutching member
  • F16D 25/1 Clutch systems with a plurality of fluid-actuated clutches
  • F16D 25/12 Details not specific to one of the before-mentioned types

Top Applicants

Top 10 applicants by patent filingsfor 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