Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Subgroup
F16D 13/3

in which the clutching pressure is produced by springs only

Introduced: September 1968

Last revised: January 2006

Full Title

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

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

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