F15B 9/00
Servomotors with follow-up action
Official title: Servomotors with follow-up action, {e.g. obtained by feed-back control,} i.e. in which the position of the actuated member conforms with that of the controlling member
F15B9/00 (Servomotors with follow-up action) appears on 430 US grants and 280 published applications in this corpus.
Search patents in F15B- Granted patents
- 430
- Published applications
- 280
- Assignees
- 281
- Inventors
- 809
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 11 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 12 | 0 |
| 1984 | 10 | 0 |
| 1985 | 10 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 11 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 3 |
| 2002 | 8 | 5 |
| 2003 | 12 | 10 |
| 2004 | 13 | 18 |
| 2005 | 11 | 10 |
| 2006 | 8 | 6 |
| 2007 | 5 | 2 |
| 2008 | 5 | 2 |
| 2009 | 1 | 6 |
| 2010 | 1 | 14 |
| 2011 | 2 | 12 |
| 2012 | 9 | 3 |
| 2013 | 9 | 12 |
| 2014 | 8 | 20 |
| 2015 | 15 | 15 |
| 2016 | 12 | 11 |
| 2017 | 16 | 12 |
| 2018 | 12 | 21 |
| 2019 | 13 | 18 |
| 2020 | 22 | 20 |
| 2021 | 23 | 16 |
| 2022 | 12 | 8 |
| 2023 | 17 | 12 |
| 2024 | 2 | 9 |
| 2025 | 12 | 5 |
| 2026 | 7 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Multi-channel flow control system15 Sep 2026US 12,736,069 B2Industrial Technology Research Institute
- Variable dither control system for a fluid actuator25 Aug 2026US 12,716,516 B2Hamilton Sundstrand Corporation
- Speed control for hydraulic system of a refuse vehicle11 Aug 2026US 12,703,315 B2Oshkosh Corporation
- Hydraulic system for a refuse vehicle2 Jun 2026US 12,643,496 B2Oshkosh Corporation
- Hydraulic system for a refuse vehicle1 Oct 2026US 2026/0296342 A1Oshkosh Corporation
- Dynamic testing system control valve adapter1 Oct 2026US 2026/0298787 A1Illinois Tool Works Inc.
- Pneumatic control device, process valve assembly and process24 Sep 2026US 2026/0286984 A1Festo AG & Co.
- Route planning based control of a refuse vehicle hydraulic system3 Sep 2026US 2026/0257638 A1Oshkosh Corporation
- Remote travel feedback systems and related methods9 Jul 2026US 2026/0194079 A1Fisher Controls International LLC
Most cited
By later US patents
- Force-controlled hydro-elastic actuator139US 6,494,039 B2Massachusetts Institute of Technology · 2002
- Biologically-inspired multi-segmented robot78US 6,532,400 B1Intelligent Inference Systems Corporation · 2003
- Digital servo valve system67US 5,036,886 AOlson Controls, Inc. · 1991
- Movement simulator64US 5,176,518 AFokker Aircraft B.V. · 1993
- Fluid servo and applications57US 8,863,641 B2Isentropic Limited · 2014