F16H 33/18 of which the motion is constrained
Introduced: September 1968
Last revised: January 2006
Full Title
Gearings based on repeated accumulation and delivery of energy > Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels > Gearings for conveying rotary motion with variable velocity ratio, in which self-regulation is sought > based essentially on inertia > having orbital members influenced by regulating masses > of which the motion is constrained
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
Filing statistics
IPC F16H 33/18 belongs to the parent subclass F16H, which recorded 293,953 patent applications worldwide between 2013 and 2023. Annual filings grew from 22,485 in 2013 to 25,039 in 2023 (+11%), peaking at 30,138 applications in 2020. The most active applicants in class F16 are SCHAEFFLER TECHNOLOGIES & COMPANY (21,545 applications), ZAHNRADFABRIK FRIEDRICHSHAFEN (9,446 applications) and TOYOTA MOTOR CORPORATION (7,215 applications).
Source: EPO PATSTAT, worldwide filings
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