F15B 2211/428
Actuated by fluid pressure
Official title: actuated by fluid pressure
F15B2211/428 (Actuated by fluid pressure) appears on 422 US grants and 265 published applications in this corpus.
Search patents in F15B- Granted patents
- 422
- Published applications
- 265
- Assignees
- 218
- Inventors
- 762
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 11 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 12 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 15 | 1 |
| 2002 | 10 | 11 |
| 2003 | 10 | 12 |
| 2004 | 12 | 9 |
| 2005 | 11 | 10 |
| 2006 | 4 | 7 |
| 2007 | 7 | 8 |
| 2008 | 6 | 8 |
| 2009 | 2 | 6 |
| 2010 | 5 | 6 |
| 2011 | 6 | 6 |
| 2012 | 5 | 2 |
| 2013 | 5 | 4 |
| 2014 | 6 | 3 |
| 2015 | 3 | 9 |
| 2016 | 3 | 6 |
| 2017 | 11 | 9 |
| 2018 | 5 | 12 |
| 2019 | 13 | 16 |
| 2020 | 14 | 18 |
| 2021 | 22 | 17 |
| 2022 | 13 | 23 |
| 2023 | 13 | 16 |
| 2024 | 22 | 21 |
| 2025 | 18 | 17 |
| 2026 | 17 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for a pilot shifted regeneration valve7 Jul 2026US 12,674,474 B1Custom Truck One Source, Inc.
- Control device of a pneumatic element23 Jun 2026US 12,663,024 B2Gimatic S.p.A.
- Rate matching hydraulic actuators on common control manifold2 Jun 2026US 12,644,534 B2Hamilton Sundstrand Corporation
- Hydraulic drive system having a 2×2Q pump unit19 May 2026US 12,631,200 B2HMS-HYBRID MOTION SOLUTIONS GmbH
- Variable relief circuit19 May 2026US 12,631,201 B2HUSCO International, Inc.
- Work Machine13 Aug 2026US 2026/0234907 A1Hitachi Construction Machinery Co., Ltd.
- Three servovalve thrust reverser actuator system23 Jul 2026US 2026/0210311 A1
- Remote travel feedback systems and related methods9 Jul 2026US 2026/0194079 A1Fisher Controls International LLC
- Transfer valve with dual authority control porting7 May 2026US 2026/0126060 A1Hamilton Sundstrand Corporation
- Pneumohydraulic pressure intensifier22 Jan 2026US 2026/0022711 A1WS Wieländer + Schill Engineering GmbH & Co. KG
Most cited
By later US patents
- Pneumatic-hydraulic actuator system74US 4,335,867 A1982
- Device and method for regulating fluid flow in a well74US 6,516,888 B1Triangle Equipment AS · 2003
- Bi-fluid actuator60US 6,711,984 B22004
- Hydraulic control circuit in a hydraulic excavator52US 5,970,709 AKabushiki Kaisha Kobe Seiko Sho · 1999
- Hydraulic circuit utilizing a compensator pressure selecting value51US 5,209,063 AKabushiki Kaisha Komatsu Seisakusho · 1993