F15B 2211/8752
Emergency operation mode
Official title: Emergency operation mode, e.g. fail-safe operation mode
F15B2211/8752 (Emergency operation mode) appears on 205 US grants and 244 published applications in this corpus.
Search patents in F15B- Granted patents
- 205
- Published applications
- 244
- Assignees
- 147
- Inventors
- 497
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 3 | 3 |
| 2008 | 1 | 3 |
| 2009 | 3 | 3 |
| 2010 | 0 | 4 |
| 2011 | 2 | 6 |
| 2012 | 3 | 4 |
| 2013 | 7 | 6 |
| 2014 | 2 | 20 |
| 2015 | 4 | 11 |
| 2016 | 17 | 12 |
| 2017 | 17 | 16 |
| 2018 | 9 | 16 |
| 2019 | 15 | 21 |
| 2020 | 22 | 17 |
| 2021 | 16 | 25 |
| 2022 | 21 | 18 |
| 2023 | 18 | 21 |
| 2024 | 22 | 9 |
| 2025 | 13 | 18 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic braking energy utilization for emergency steering, braking, charging accumulator(s), and/or work functions to reduce or prevent engine from overspeed, assist acceleration and/or unlimited towing21 Jul 2026US 12,687,181 B2Applied Industrial Technologies, Inc.
- Protection for a circuit for controlling the orientation of propeller blades of an aircraft engine7 Jul 2026US 12,674,475 B2Safran Aircraft Engines
- Hydraulic isolation cylinder-based system24 Feb 2026US 12,560,182 B1SRI Energy, Inc.
- 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
- Manifold system for 2003 configuration17 Feb 2026US 12,553,454 B2Rotex Automation Limited
- Hauling Vehicle27 Aug 2026US 2026/0249901 A1Hitachi Construction Machinery Co., Ltd.
- Quick release scotch yoke actuator6 Aug 2026US 2026/0226885 A1Bray International, Inc.
- Hydraulic Isolation Cylinder-Based System6 Aug 2026US 2026/0226921 A1SRI Energy, Inc.
- Triple redundancy assembly in process control systems18 Jun 2026US 2026/0169506 A1Rotex Automation Limited
- Turbo engine including a system to control pitch of a propeller blade4 Jun 2026US 2026/0153033 A1General Electric Company
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Control for hydraulic drive or actuator39US 5,829,335 AMannesmann Rexroth GmbH · 1998
- Hydraulic system with a dynamic seal32US 9,651,067 B2Caterpillar Inc. · 2017
- Two-stage pressure relief valve22US 7,165,950 B2Bell Helicopter Textron Inc. · 2007
- Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems17US 10,323,663 B2Eaton Intelligent Power Limited · 2019