IPC Subgroup
F16H 61/5 controlled by changing the flow, force, or reaction of the liquid in the working circuit, while maintaining a completely filled working circuit
Introduced: January 1990
Last revised: January 2006
Full Title
Control functions within change-speed- or reversing-gearings for conveying rotary motion > Control of exclusively fluid gearing > hydrodynamic > controlled by changing the flow, force, or reaction of the liquid in the working circuit, while maintaining a completely filled working circuit
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:
- GEARING
2 direct subcodes
Child Classifications
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- F16H 61/52 by altering the position of blades
- F16H 61/58 by change of the mechanical connection of, or between, the runners
Top Applicants
Top 10 applicants by patent filingsfor 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