F15B 2211/5159
Being connected to an output member and a return line
Official title: being connected to an output member and a return line
F15B2211/5159 (Being connected to an output member and a return line) appears on 156 US grants and 148 published applications in this corpus.
Search patents in F15B- Granted patents
- 156
- Published applications
- 148
- Assignees
- 92
- Inventors
- 372
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 6 | 3 |
| 2003 | 3 | 3 |
| 2004 | 2 | 3 |
| 2005 | 3 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 2 | 4 |
| 2012 | 0 | 1 |
| 2013 | 0 | 5 |
| 2014 | 3 | 7 |
| 2015 | 7 | 8 |
| 2016 | 8 | 7 |
| 2017 | 5 | 8 |
| 2018 | 2 | 9 |
| 2019 | 9 | 7 |
| 2020 | 10 | 11 |
| 2021 | 11 | 9 |
| 2022 | 13 | 16 |
| 2023 | 13 | 10 |
| 2024 | 8 | 14 |
| 2025 | 12 | 9 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electro-hydraulic actuator with a pilot-actuated float mode16 Jun 2026US 12,655,918 B2Parker-Hannifin Corporation
- Hydraulic drive system having a 2×2Q pump unit19 May 2026US 12,631,200 B2HMS-HYBRID MOTION SOLUTIONS GmbH
- Energy recovery charging of an accumulator in a low-pressure compensation circuit of an electro-hydrostatic actuator21 Apr 2026US 12,607,205 B2University of Manitoba
- Automatic pressure release14 Apr 2026US 12,601,149 B2Caterpillar Work Tools B. V.
- Hydraulic system and passenger restraint system10 Mar 2026US 12,570,235 B2HAWE Hydraulik SE
- 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.
- Turbo engine including a system to control pitch of a propeller blade4 Jun 2026US 2026/0153033 A1General Electric Company
- Fluid pressure control device9 Apr 2026US 2026/0099162 A1KYB Corporation
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- System and method for controlling an independent metering valve77US 5,960,695 ACaterpillar Inc. · 1999
- Hydraulic system having a combined meter-out and regeneration valve assembly32US 5,415,076 ACaterpillar Inc. · 1995
- System and method for controlling an independent metering valve32US 5,947,140 ACaterpillar Inc. · 1999
- Cylinder driving system and energy regenerating method thereof30US 6,912,849 B2Komatsu Ltd. · 2005