F15B 2211/20584
Combinations of pumps with high and low capacity
F15B2211/20584 (Combinations of pumps with high and low capacity) appears on 110 US grants and 93 published applications in this corpus.
Search patents in F15B- Granted patents
- 110
- Published applications
- 93
- Assignees
- 83
- Inventors
- 265
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 2 |
| 2002 | 3 | 4 |
| 2003 | 4 | 4 |
| 2004 | 5 | 5 |
| 2005 | 3 | 4 |
| 2006 | 2 | 4 |
| 2007 | 4 | 6 |
| 2008 | 1 | 2 |
| 2009 | 6 | 8 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 3 | 0 |
| 2013 | 2 | 3 |
| 2014 | 3 | 4 |
| 2015 | 3 | 3 |
| 2016 | 2 | 5 |
| 2017 | 1 | 0 |
| 2018 | 5 | 5 |
| 2019 | 0 | 6 |
| 2020 | 4 | 0 |
| 2021 | 3 | 4 |
| 2022 | 6 | 5 |
| 2023 | 2 | 3 |
| 2024 | 5 | 8 |
| 2025 | 2 | 1 |
| 2026 | 7 | 3 |
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
- 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
- Hydraulic drive system5 May 2026US 12,618,419 B2HMS-HYBRID MOTION SOLUTIONS GmbH
- Hydraulic unit24 Mar 2026US 12,584,504 B2Daikin Industries, Ltd.
- Hydraulic System having a Conditioning Circuit25 Jun 2026US 2026/0177085 A1Robert Bosch GmbH
- Method for operating a hydraulic system of an industrial truck having a plurality of hydraulic pumps, and industrial truck9 Apr 2026US 2026/0097944 A1Jungheinrich Aktiengesellschaft
- 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 System21 Aug 2025US 2025/0264117 A1HMS-HYBRID MOTION SOLUTIONS GmbH
- Hydraulic Drive System Having a 2X2Q Pump Unit5 Dec 2024US 2024/0401614 A1HMS-HYBRID MOTION SOLUTIONS GmbH
Most cited
By later US patents
- Cartridge valve having solenoid bypass and integral relief valve94US 5,992,450 AEaton Corporation · 1999
- Variable flow hydraulic system73US 6,029,445 ACase Corporation · 2000
- Load sensing hydraulic control system for variable displacement pump44US 6,216,456 B1Caterpillar Inc. · 2001
- Flow sensing auxiliary pump by-pass valve39US 4,116,577 ANational Machine Company · 1978
- Self-regulated hydraulic control system37US 4,833,971 A1989