F15B 2211/27
Directional control by means of the pressure source
F15B2211/27 (Directional control by means of the pressure source) appears on 329 US grants and 367 published applications in this corpus.
Search patents in F15B- Granted patents
- 329
- Published applications
- 367
- Assignees
- 177
- Inventors
- 651
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 3 |
| 2003 | 2 | 7 |
| 2004 | 6 | 4 |
| 2005 | 7 | 3 |
| 2006 | 1 | 2 |
| 2007 | 3 | 3 |
| 2008 | 0 | 7 |
| 2009 | 1 | 8 |
| 2010 | 3 | 8 |
| 2011 | 5 | 12 |
| 2012 | 8 | 11 |
| 2013 | 9 | 22 |
| 2014 | 12 | 14 |
| 2015 | 17 | 27 |
| 2016 | 10 | 23 |
| 2017 | 24 | 23 |
| 2018 | 21 | 23 |
| 2019 | 23 | 26 |
| 2020 | 27 | 26 |
| 2021 | 33 | 19 |
| 2022 | 17 | 30 |
| 2023 | 21 | 16 |
| 2024 | 14 | 17 |
| 2025 | 17 | 18 |
| 2026 | 12 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Electro-hydraulic actuator with a pilot-actuated float mode16 Jun 2026US 12,655,918 B2Parker-Hannifin Corporation
- Hydraulic machine swing system with anti-drift9 Jun 2026US 12,650,003 B2Caterpillar Inc.
- Energy storage and reutilization for a single-rod electro-hydrostatic actuator9 Jun 2026US 12,650,138 B2University of Manitoba
- Hydraulic drive system having a 2×2Q pump unit19 May 2026US 12,631,200 B2HMS-HYBRID MOTION SOLUTIONS GmbH
- Mobile machine with improved electric powered actuator system6 Aug 2026US 2026/0226710 A1Moog Inc.
- Integrated Electrohydraulic Actuator30 Jul 2026US 2026/0218734 A1Parker-Hannifin Corporation
- Construction machine9 Jul 2026US 2026/0193869 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic System having a Conditioning Circuit25 Jun 2026US 2026/0177085 A1Robert Bosch GmbH
- Hydraulic System having an Inertia Charging Arrangement25 Jun 2026US 2026/0177086 A1Robert Bosch GmbH
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Hydraulic system, manifold and volumetric compensator73US 6,519,939 B1M-Mac Actuators, Inc. · 2003
- Shovel64US 6,789,335 B1Kobelco Construction Machinery Co., Ltd. · 2004
- Pressure oil energy recover/regenation apparatus54US 6,460,332 B1Komatsu Ltd. · 2002
- Hybrid machine with hydraulic drive device53US 6,962,050 B2Komatsu Ltd. · 2005