F15B 2211/515
Characterised by the connections of the pressure control means in the circuit
Official title: characterised by the connections of the pressure control means in the circuit
F15B2211/515 (Characterised by the connections of the pressure control means in the circuit) appears on 777 US grants and 590 published applications in this corpus.
Search patents in F15B- Granted patents
- 777
- Published applications
- 590
- Assignees
- 388
- Inventors
- 1,500
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 17 | 0 |
| 1978 | 6 | 0 |
| 1979 | 11 | 0 |
| 1980 | 13 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 13 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 4 | 0 |
| 1998 | 16 | 0 |
| 1999 | 17 | 0 |
| 2000 | 10 | 0 |
| 2001 | 24 | 4 |
| 2002 | 31 | 13 |
| 2003 | 17 | 31 |
| 2004 | 19 | 23 |
| 2005 | 22 | 20 |
| 2006 | 13 | 20 |
| 2007 | 12 | 13 |
| 2008 | 11 | 9 |
| 2009 | 7 | 8 |
| 2010 | 12 | 6 |
| 2011 | 9 | 14 |
| 2012 | 3 | 8 |
| 2013 | 8 | 15 |
| 2014 | 11 | 19 |
| 2015 | 13 | 30 |
| 2016 | 15 | 23 |
| 2017 | 17 | 25 |
| 2018 | 20 | 35 |
| 2019 | 29 | 32 |
| 2020 | 42 | 37 |
| 2021 | 36 | 29 |
| 2022 | 33 | 49 |
| 2023 | 36 | 33 |
| 2024 | 40 | 39 |
| 2025 | 32 | 38 |
| 2026 | 21 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2211/5151Being connected to a pressure source and a directional control valveIndexing code218
- F15B 2211/5153Being connected to an output member and a directional control valveIndexing code207
- F15B 2211/5157Being connected to a pressure source and a return lineIndexing code168
- F15B 2211/5159Being connected to an output member and a return lineIndexing code156
- F15B 2211/5158Being connected to a pressure source and an output memberIndexing code93
- F15B 2211/5156Being connected to a return line and a directional control valveIndexing code72
Recent patents
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Valve section and hydraulic valve assembly22 Sep 2026US 12,742,463 B2HAWE Hydraulik SE
- Hydraulic power steering system25 Aug 2026US 12,715,501 B2Hydac New Technologies GmbH
- Drive control device for rotating work machine and rotating work machine provided with same16 Jun 2026US 12,655,607 B2Kobelco Construction Machinery Co., Ltd.
- Electro-hydraulic actuator with a pilot-actuated float mode16 Jun 2026US 12,655,918 B2Parker-Hannifin Corporation
- Fluid pressure circuit3 Sep 2026US 2026/0258821 A1Eagle Industry Co., Ltd.
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
- Hydraulic System having an Inertia Charging Arrangement25 Jun 2026US 2026/0177086 A1Robert Bosch GmbH
- Electro-Hydraulic Actuator Assembly with a Fluid Access Port11 Jun 2026US 2026/0160279 A1Parker-Hannifin Corporation
- Asphalt finisher4 Jun 2026US 2026/0152905 A1Sumitomo Construction Machinery Co., Ltd.
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Hydraulic system providing down force on a work implement109US 6,460,623 B1Caterpillar Inc. · 2002
- Systems and methods for energy storage and recovery using compressed gas96US 7,832,207 B2SustainX, Inc. · 2010
- System and method for controlling an independent metering valve77US 5,960,695 ACaterpillar Inc. · 1999
- Regenerative adaptive fluid motor control77US 6,349,543 B12002