F15B 2211/31552
Being connected to an output member and a return line
Official title: being connected to an output member and a return line
F15B2211/31552 (Being connected to an output member and a return line) appears on 96 US grants and 99 published applications in this corpus.
Search patents in F15B- Granted patents
- 96
- Published applications
- 99
- Assignees
- 70
- Inventors
- 241
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 2 | 0 |
| 2011 | 2 | 5 |
| 2012 | 1 | 1 |
| 2013 | 2 | 6 |
| 2014 | 4 | 6 |
| 2015 | 4 | 10 |
| 2016 | 7 | 0 |
| 2017 | 6 | 5 |
| 2018 | 3 | 3 |
| 2019 | 2 | 5 |
| 2020 | 7 | 7 |
| 2021 | 3 | 9 |
| 2022 | 10 | 11 |
| 2023 | 7 | 4 |
| 2024 | 7 | 8 |
| 2025 | 6 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydraulic system and passenger restraint system10 Mar 2026US 12,570,235 B2HAWE Hydraulik SE
- Hydraulic power tool16 Dec 2025US 12,497,988 B2Milwaukee Electric Tool Corporation
- Gangway having self-raising assembly4 Nov 2025US 12,459,760 B2Safe Rack LLC
- Implement descending stability control method and system and tractor27 May 2025US 12,310,270 B2Jiangsu Xcmg Construction Machinery Research Institute Ltd.
- Hydraulic valve and system27 May 2025US 12,310,896 B2Stryker Corporation
- Gangway having self-raising assembly26 Feb 2026US 2026/0054947 A1Safe Rack LLC
- Safety valve device25 Dec 2025US 2025/0389287 A1Festo AG & Co.
- Hydraulic tools, systems for tools, and methods of use or control of same23 Oct 2025US 2025/0327469 A1Huskie Tools, Inc.
- Hydraulic jack assemblies25 Sep 2025US 2025/0296823 A1Roadtek Enterprises Inc.
- Hydraulic system and passenger restraint system24 Jul 2025US 2025/0236258 A1HAWE Hydraulik SE
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Linear servoactuator with integrated transformer position sensor158US 4,628,499 AScientific-Atlanta, Inc. · 1986
- Control system for recovering swing motor kinetic energy29US 7,908,852 B2Caterpillar Inc. · 2011
- Hydraulic valve arrangement25US 7,243,591 B2Sauer-Danfoss ApS · 2007
- Hydraulic control system with energy recovery21US 6,854,268 B2Caterpillar Inc. · 2005