F15B 2211/315
Characterised by the connections of the valve or valves in the circuit
Official title: characterised by the connections of the valve or valves in the circuit
F15B2211/315 (Characterised by the connections of the valve or valves in the circuit) appears on 724 US grants and 570 published applications in this corpus.
Search patents in F15B- Granted patents
- 724
- Published applications
- 570
- Assignees
- 333
- Inventors
- 1,343
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 5 | 0 |
| 1979 | 9 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 11 | 0 |
| 1983 | 6 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 8 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 11 | 0 |
| 1995 | 12 | 0 |
| 1996 | 9 | 0 |
| 1997 | 9 | 0 |
| 1998 | 21 | 0 |
| 1999 | 12 | 0 |
| 2000 | 13 | 0 |
| 2001 | 25 | 3 |
| 2002 | 18 | 15 |
| 2003 | 15 | 33 |
| 2004 | 30 | 27 |
| 2005 | 20 | 23 |
| 2006 | 16 | 19 |
| 2007 | 16 | 12 |
| 2008 | 11 | 16 |
| 2009 | 9 | 24 |
| 2010 | 14 | 17 |
| 2011 | 19 | 29 |
| 2012 | 9 | 13 |
| 2013 | 15 | 15 |
| 2014 | 19 | 15 |
| 2015 | 14 | 31 |
| 2016 | 16 | 12 |
| 2017 | 19 | 20 |
| 2018 | 19 | 32 |
| 2019 | 18 | 33 |
| 2020 | 37 | 25 |
| 2021 | 32 | 33 |
| 2022 | 36 | 34 |
| 2023 | 25 | 28 |
| 2024 | 29 | 32 |
| 2025 | 31 | 23 |
| 2026 | 9 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2211/3157Being connected to a pressure source, an output member and a returnIndexing code496
- F15B 2211/31523Being connected to a pressure source and an output memberIndexing code188
- F15B 2211/31552Being connected to an output member and a return lineIndexing code96
- F15B 2211/31505Being connected to a pressure source and a return lineIndexing code33
Recent patents
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Drive control device for rotating work machine and rotating work machine provided with same16 Jun 2026US 12,655,607 B2Kobelco Construction Machinery Co., Ltd.
- Valves for controlling flow of pressurized fluid to a tool5 May 2026US 12,618,485 B2Enerpac Tool Group Corp.
- Hydraulic system for work machine, work machine, and method for controlling hydraulic system28 Apr 2026US 12,612,757 B2Komatsu Ltd.
- Three servovalve thrust reverser actuator system7 Apr 2026US 12,595,774 B2Woodward, Inc.
- Three servovalve thrust reverser actuator system23 Jul 2026US 2026/0210311 A1
- Hydraulic valve apparatus2 Jul 2026US 2026/0185545 A1Komatsu Ltd.
- Hybrid architecture for smart power management on off-highway machines18 Jun 2026US 2026/0168211 A1Deere & Company
- Linear actuator assembly and system21 May 2026US 2026/0139694 A1Project Phoenix, LLC
- Work Machine2 Apr 2026US 2026/0092431 A1Hitachi Construction Machinery Co., Ltd.
Most cited
By later US patents
- Pneumatically operated mechanism1,103US 6,050,172 AEmhart Glass S. A. · 2000
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Linear servoactuator with integrated transformer position sensor158US 4,628,499 AScientific-Atlanta, Inc. · 1986
- Systems and methods for energy storage and recovery using compressed gas96US 7,832,207 B2SustainX, Inc. · 2010
- Cartridge valve having solenoid bypass and integral relief valve94US 5,992,450 AEaton Corporation · 1999