F15B 11/0426
By controlling the number of pumps or parallel valves switched on
Official title: {by controlling the number of pumps or parallel valves switched on}
F15B11/0426 (By controlling the number of pumps or parallel valves switched on) appears on 84 US grants and 75 published applications in this corpus.
Search patents in F15B- Granted patents
- 84
- Published applications
- 75
- Assignees
- 73
- Inventors
- 205
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 4 |
| 2013 | 0 | 1 |
| 2014 | 2 | 4 |
| 2015 | 1 | 4 |
| 2016 | 3 | 3 |
| 2017 | 4 | 2 |
| 2018 | 2 | 4 |
| 2019 | 3 | 7 |
| 2020 | 8 | 9 |
| 2021 | 10 | 5 |
| 2022 | 5 | 6 |
| 2023 | 3 | 3 |
| 2024 | 5 | 5 |
| 2025 | 5 | 6 |
| 2026 | 5 | 2 |
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
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Method and system for a flow-isolated valve arrangement and a three-chamber cylinder hydraulic architecture1 Sep 2026US 12,723,603 B2Purdue Research Foundation
- Flow distribution control method, device, and apparatus for hydraulic system and hydraulic system24 Feb 2026US 12,559,911 B2Zoomlion Heavy Industry Science and Technology Co., Ltd.
- Pneumatic system and process27 Jan 2026US 12,535,089 B2Festo AG & Co.
- Hybrid architecture for smart power management on off-highway machines18 Jun 2026US 2026/0168211 A1Deere & Company
- Open and closed circuit parallel drive system and control method based on a four-chamber hydraulic cylinder19 Feb 2026US 2026/0049622 A1Taiyuan University of Technology
- Hydraulic drive device25 Dec 2025US 2025/0389104 A1Kawasaki Jukogyo Kabushiki Kaisha
- Method and system for a flow-isolated valve arrangement and a three-chamber cylinder hydraulic architecture21 Aug 2025US 2025/0264118 A1Purdue Research Foundation
- Parallel electrohydraulic servo valve controlled actuator with failure accommodation24 Apr 2025US 2025/0129807 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Buckled actuator with enhanced restoring force120US 5,901,939 AHoneywell Inc. · 1999
- Addressable valve arrays for proportional pressure or flow control88US 6,240,944 B1Honeywell International Inc. · 2001
- Electrohydraulic valve arrangement41US 5,868,059 ACaterpillar Inc. · 1999
- Digital fluid flow rate controller32US 4,191,215 ABodenseewerk Perkin-Elmer & Co., GmbH · 1980
- Control valve unit for the cylinder of a fluid actuator30US 4,518,011 A1985