F15B 2211/3055
The pressure compensating valve is arranged between directional control valve and return
Official title: the pressure compensating valve is arranged between directional control valve and return line
F15B2211/3055 (The pressure compensating valve is arranged between directional control valve and return) appears on 29 US grants and 17 published applications in this corpus.
Search patents in F15B- Granted patents
- 29
- Published applications
- 17
- Assignees
- 18
- Inventors
- 52
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 3 |
| 2020 | 3 | 2 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic distributor with pressure compensator for directional valves18 Aug 2026US 12,710,062 B2Walvoil S.P.A.
- Open centre hydraulic distributor and power transmission system for transmitting to users of an operating machine7 Oct 2025US 12,435,739 B2Bucher Hydraulics AG
- System and method for controlling hydraulic valve operation within a work vehicle28 Mar 2023US 11,614,101 B1CNH Industrial America LLC
- Control system for construction machinery26 Apr 2022US 11,313,104 B2Doosan Infracore Co., Ltd.
- Hydraulic circuit having a combined compensation and energy recovery function12 Oct 2021US 11,143,209 B2Walvoil S.P.A.
- Pressure compensation valve and hydraulic control system28 May 2026US 2026/0145919 A1Zhejiang Senstren Technology Co., LTD
- Open centre hydraulic distributor and power transmission system for transmitting to users of an operating machine26 Sep 2024US 2024/0318670 A1Bucher Hydraulics AG
- Valve section and hydraulic system with a valve section18 Apr 2024US 2024/0125396 A1
- Hydraulic distributor with pressure compensator for directional valves24 Nov 2022US 2022/0373000 A1Walvoil S.P.A.
- Control system for construction machinery21 Oct 2021US 2021/0324608 A1Doosan Infracore Co., Ltd.
Most cited
By later US patents
- Regenerative adaptive fluid motor control77US 6,349,543 B12002
- Hydraulic driving apparatus33US 5,083,430 AHitachi Construction Machinery Co., Ltd. · 1992
- Regenerative adaptive fluid control29US 5,794,439 A1998
- Load sensing circuit of load compensated direction control valve23US 4,747,335 ACaterpillar Inc. · 1988
- Hydraulic device20US 6,082,106 ANachi-Fujikoshi Corp. · 2000