F15B 2211/86
Control during or prevention of abnormal conditions
F15B2211/86 (Control during or prevention of abnormal conditions) appears on 773 US grants and 842 published applications in this corpus.
Search patents in F15B- Granted patents
- 773
- Published applications
- 842
- Assignees
- 408
- Inventors
- 1,741
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 6 | 12 |
| 2003 | 10 | 15 |
| 2004 | 14 | 7 |
| 2005 | 6 | 7 |
| 2006 | 4 | 10 |
| 2007 | 13 | 17 |
| 2008 | 5 | 15 |
| 2009 | 11 | 11 |
| 2010 | 5 | 16 |
| 2011 | 9 | 16 |
| 2012 | 11 | 10 |
| 2013 | 18 | 18 |
| 2014 | 7 | 47 |
| 2015 | 22 | 36 |
| 2016 | 32 | 37 |
| 2017 | 28 | 35 |
| 2018 | 34 | 44 |
| 2019 | 47 | 83 |
| 2020 | 56 | 72 |
| 2021 | 77 | 78 |
| 2022 | 68 | 65 |
| 2023 | 61 | 73 |
| 2024 | 59 | 49 |
| 2025 | 64 | 44 |
| 2026 | 28 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2211/863The abnormal condition being a hydraulic or pneumatic failureIndexing code325
- F15B 2211/8613The abnormal condition being oscillationsIndexing code119
- F15B 2211/8609The abnormal condition being cavitationIndexing code107
- F15B 2211/8616The abnormal condition being noise or vibrationIndexing code101
- F15B 2211/862The abnormal condition being electric or electronic failureIndexing code99
- F15B 2211/8606The abnormal condition being a shockIndexing code77
- F15B 2211/8643The abnormal condition being a human failureIndexing code32
- F15B 2211/8603The abnormal condition being an obstacleIndexing code14
All 9 subgroupsShow fewer
Recent patents
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Hydraulic power steering system25 Aug 2026US 12,715,501 B2Hydac New Technologies GmbH
- Hydraulic cylinder monitoring11 Aug 2026US 12,704,137 B2The Heil Co.
- Protection for a circuit for controlling the orientation of propeller blades of an aircraft engine7 Jul 2026US 12,674,475 B2Safran Aircraft Engines
- Control device of a pneumatic element23 Jun 2026US 12,663,024 B2Gimatic S.p.A.
- Hauling Vehicle27 Aug 2026US 2026/0249901 A1Hitachi Construction Machinery Co., Ltd.
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Leakage cause discrimination system and leakage cause discrimination method20 Aug 2026US 2026/0243281 A1KYB Corporation
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
- Mobile machine with improved electric powered actuator system6 Aug 2026US 2026/0226710 A1Moog Inc.
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Pressure regulator for hydraulically controlled machine tools47US 4,796,652 AIndex-Werke Komm.-Ges. Hahn & Tessky · 1989
- 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
- Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve41US 7,487,707 B2HUSCO International, Inc. · 2009