F15B 11/16
Servomotor systems without provision for follow-up action: with two or more servomotors
Official title: with two or more servomotors
F15B11/16 (Servomotor systems without provision for follow-up action: with two or more servomotors) appears on 2,004 US grants and 1,620 published applications in this corpus.
Search patents in F15B- Granted patents
- 2,004
- Published applications
- 1,620
- Assignees
- 668
- Inventors
- 3,087
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 49 | 0 |
| 1977 | 21 | 0 |
| 1978 | 26 | 0 |
| 1979 | 22 | 0 |
| 1980 | 25 | 0 |
| 1981 | 15 | 0 |
| 1982 | 18 | 0 |
| 1983 | 11 | 0 |
| 1984 | 16 | 0 |
| 1985 | 16 | 0 |
| 1986 | 18 | 0 |
| 1987 | 19 | 0 |
| 1988 | 15 | 0 |
| 1989 | 14 | 0 |
| 1990 | 8 | 0 |
| 1991 | 17 | 0 |
| 1992 | 17 | 0 |
| 1993 | 16 | 0 |
| 1994 | 20 | 0 |
| 1995 | 18 | 0 |
| 1996 | 21 | 0 |
| 1997 | 19 | 0 |
| 1998 | 17 | 0 |
| 1999 | 27 | 0 |
| 2000 | 32 | 0 |
| 2001 | 43 | 8 |
| 2002 | 37 | 36 |
| 2003 | 44 | 45 |
| 2004 | 39 | 43 |
| 2005 | 35 | 35 |
| 2006 | 31 | 36 |
| 2007 | 28 | 55 |
| 2008 | 29 | 41 |
| 2009 | 41 | 40 |
| 2010 | 23 | 37 |
| 2011 | 27 | 23 |
| 2012 | 15 | 47 |
| 2013 | 37 | 67 |
| 2014 | 35 | 45 |
| 2015 | 53 | 90 |
| 2016 | 58 | 81 |
| 2017 | 86 | 109 |
| 2018 | 82 | 113 |
| 2019 | 127 | 120 |
| 2020 | 128 | 102 |
| 2021 | 122 | 93 |
| 2022 | 91 | 86 |
| 2023 | 79 | 77 |
| 2024 | 81 | 75 |
| 2025 | 90 | 73 |
| 2026 | 46 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 11/161With sensing of servomotor demand or load759
- F15B 11/17Using two or more pumps713
- F15B 11/20Controlling several interacting or sequentially-operating members199
- F15B 11/22Synchronisation of the movement of two or more servomotors167
- F15B 11/18Used in combination for obtaining stepwise operation of a single controlled member39
Recent patents
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- Hybrid electro-hydraulic load sensing system and control method thereof15 Sep 2026US 12,736,067 B2Chongqing University
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Hydraulic system for a vehicle1 Oct 2026US 2026/0296861 A1Oshkosh Corporation
- Hauling Vehicle27 Aug 2026US 2026/0249901 A1Hitachi Construction Machinery Co., Ltd.
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
- Method Of Adjusting Relief Pressure Of Relief Valve For Swing Motor13 Aug 2026US 2026/0234899 A1Caterpillar SARL
Most cited
By later US patents
- Fluid power distribution and control system111US 10,161,423 B2Sauer-Danfoss ApS · 2018
- Hydraulic system providing down force on a work implement109US 6,460,623 B1Caterpillar Inc. · 2002
- Automotive hydraulic system and method for driving a hydraulic accessory in parallel with a power steering unit108US 6,073,536 A2000
- Hydraulic control system for downhole tools100US 6,536,530 B2Halliburton Energy Services.Inc. · 2003
- Radial piston pump assemblies and use thereof in hydraulic circuits95US 10,125,750 B2HUSCO International, Inc. · 2018