F15B 2211/41581
Being connected to an output member and a return line
Official title: being connected to an output member and a return line
F15B2211/41581 (Being connected to an output member and a return line) appears on 171 US grants and 154 published applications in this corpus.
Search patents in F15B- Granted patents
- 171
- Published applications
- 154
- Assignees
- 111
- Inventors
- 397
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 4 |
| 2004 | 3 | 3 |
| 2005 | 2 | 3 |
| 2006 | 4 | 3 |
| 2007 | 4 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 2 | 4 |
| 2014 | 1 | 3 |
| 2015 | 4 | 16 |
| 2016 | 8 | 6 |
| 2017 | 7 | 15 |
| 2018 | 9 | 7 |
| 2019 | 10 | 8 |
| 2020 | 13 | 9 |
| 2021 | 11 | 14 |
| 2022 | 9 | 17 |
| 2023 | 8 | 8 |
| 2024 | 9 | 12 |
| 2025 | 12 | 7 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- Work machine10 Mar 2026US 12,571,182 B2Sumitomo Heavy Industries, Ltd.
- Hydraulic system for pitch angle adjustment of a rotor blade of a wind turbine and wind turbine with such a hydraulic system17 Feb 2026US 12,553,412 B2HAWE Hydraulik SE
- Energy recovery system and control strategy for hydraulic excavator boom20 Jan 2026US 12,529,391 B1Central South University of Forestry and Technology
- Electro-Hydraulic Actuator Assembly with a Fluid Access Port11 Jun 2026US 2026/0160279 A1Parker-Hannifin Corporation
- Compressed-air supply unit, compressed-air supply system, vehicle and operating method14 May 2026US 2026/0131760 A1Zf Cv Systems Europe BV
- 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
- Hydraulic drive device22 Jan 2026US 2026/0022718 A1
- Turbine engine comprising an actuator and aircraft comprising such a turbine engine, and corresponding actuation method1 Jan 2026US 2026/0002474 A1Safran Power Units
Most cited
By later US patents
- Pneumatically operated mechanism1,103US 6,050,172 AEmhart Glass S. A. · 2000
- Proportional seat-type 4-way valve47US 5,211,196 AHydrolux S.a r.l. · 1993
- Hydraulic control device47US 5,259,293 AHeilmeier & Weinlein Fabrik fuer Oel-Hydraulik GmbH & Co. KG · 1993
- Device for cooling components by means of hydraulic fluid from a hydraulic circuit43US 6,672,056 B2Linde Aktiengesellschaft · 2004
- Control valve and hydraulic system employing same42US 4,696,163 ARexa Corporation · 1987