IPC Subgroup
F16H 61/4078 Fluid exchange between hydrostatic circuits and external sources or consumers
Introduced: January 2010
Full Title
Control functions within change-speed- or reversing-gearings for conveying rotary motion > Control of exclusively fluid gearing > hydrostatic > Fluid exchange between hydrostatic circuits and external sources or consumers
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
4 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- F16H 61/4096 with pressure accumulators
- F16H 61/4104 Flushing, e.g. by using flushing valves or by connection to exhaust
- F16H 61/4131 Fluid exchange by aspiration from reservoirs, e.g. sump
- F16H 61/4139 Replenishing or scavenging pumps, e.g. auxiliary charge pumps
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