F15B 11/028
For controlling the actuating force
Official title: for controlling the actuating force (F15B11/024 takes precedence)
F15B11/028 (For controlling the actuating force) appears on 574 US grants and 482 published applications in this corpus.
Search patents in F15B- Granted patents
- 574
- Published applications
- 482
- Assignees
- 355
- Inventors
- 1,192
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 15 | 0 |
| 2000 | 9 | 0 |
| 2001 | 32 | 2 |
| 2002 | 23 | 22 |
| 2003 | 21 | 31 |
| 2004 | 29 | 24 |
| 2005 | 14 | 17 |
| 2006 | 13 | 9 |
| 2007 | 11 | 12 |
| 2008 | 6 | 4 |
| 2009 | 3 | 15 |
| 2010 | 9 | 8 |
| 2011 | 6 | 16 |
| 2012 | 6 | 9 |
| 2013 | 9 | 14 |
| 2014 | 10 | 18 |
| 2015 | 10 | 24 |
| 2016 | 12 | 25 |
| 2017 | 19 | 18 |
| 2018 | 17 | 26 |
| 2019 | 29 | 31 |
| 2020 | 30 | 30 |
| 2021 | 27 | 24 |
| 2022 | 25 | 28 |
| 2023 | 18 | 21 |
| 2024 | 20 | 21 |
| 2025 | 25 | 18 |
| 2026 | 15 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Method and system for a flow-isolated valve arrangement and a three-chamber cylinder hydraulic architecture1 Sep 2026US 12,723,603 B2Purdue Research Foundation
- Construction machine25 Aug 2026US 12,716,203 B2Kobelco Construction Machinery Co., Ltd.
- Actuator assembly for a heavy construction machine25 Aug 2026US 12,716,429 B2Wipro Enterprises Pvt Ltd
- Actuator, open/close valve mechanism, and fluid control device23 Jun 2026US 12,663,096 B2Fujikin Incorporated
- Work Machine8 Oct 2026US 2026/0308879 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic System with Reservoir Surge Energy Recovery and Inlet Flow Supplement for Surface Engaging Machinery17 Sep 2026US 2026/0271819 A1Parker-Hannifin Corporation
- Hydraulic mechanical pumping unit with a ventilation duct for electronic components and a damping filtration system27 Aug 2026US 2026/0251138 A1
- Work vehicle13 Aug 2026US 2026/0234908 A1Kubota Corporation
- Hydraulic Isolation Cylinder-Based System6 Aug 2026US 2026/0226921 A1SRI Energy, Inc.
Most cited
By later US patents
- Enhanced computer optimized adaptive suspension system and method196US 6,502,837 B1Kenmar Company Trust · 2003
- Enhanced computer optimized adaptive suspension system and method172US 7,076,351 B2Great Northern Technologies, LLC · 2006
- Force-controlled hydro-elastic actuator139US 6,494,039 B2Massachusetts Institute of Technology · 2002
- Head section support for a surgical table apparatus119US 6,739,006 B2Hill-Rom Services, Inc. · 2004
- Hydraulic system providing down force on a work implement109US 6,460,623 B1Caterpillar Inc. · 2002