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IPC Subgroup
F16D 33/08

by devices incorporated in the fluid coupling, with or without remote control

Introduced: September 1968

Last revised: January 2006

Full Title

Rotary fluid couplings or clutches of the hydrokinetic type > controlled by changing the amount of liquid in the working circuit > by devices incorporated in the fluid coupling, with or without remote control

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

2 direct subcodes

Child Classifications

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  • F16D 33/14 consisting of shiftable or adjustable scoops

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