F15B 11/036
By means of servomotors having a plurality of working chambers
Official title: by means of servomotors having a plurality of working chambers
F15B11/036 (By means of servomotors having a plurality of working chambers) appears on 176 US grants and 144 published applications in this corpus.
Search patents in F15B- Granted patents
- 176
- Published applications
- 144
- Assignees
- 145
- Inventors
- 354
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 5 |
| 2003 | 4 | 4 |
| 2004 | 9 | 8 |
| 2005 | 4 | 7 |
| 2006 | 3 | 5 |
| 2007 | 2 | 4 |
| 2008 | 5 | 1 |
| 2009 | 1 | 3 |
| 2010 | 3 | 3 |
| 2011 | 1 | 4 |
| 2012 | 0 | 3 |
| 2013 | 2 | 5 |
| 2014 | 4 | 4 |
| 2015 | 4 | 8 |
| 2016 | 6 | 9 |
| 2017 | 5 | 7 |
| 2018 | 8 | 11 |
| 2019 | 5 | 7 |
| 2020 | 8 | 6 |
| 2021 | 8 | 8 |
| 2022 | 6 | 11 |
| 2023 | 5 | 7 |
| 2024 | 10 | 5 |
| 2025 | 7 | 6 |
| 2026 | 5 | 3 |
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
- 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
- Walking excavator2 Jun 2026US 12,644,249 B2Kaiser Aktiengesellschaft
- Two-way quick cylinder and wood splitter9 Jul 2026US 2026/0194080 A1
- Stacked hydraulic tool arrangement30 Apr 2026US 2026/0117803 A1
- Open and closed circuit parallel drive system and control method based on a four-chamber hydraulic cylinder19 Feb 2026US 2026/0049622 A1Taiyuan University of Technology
- Actuator, open/close valve mechanism, and fluid control device4 Dec 2025US 2025/0369533 A1Fujikin Incorporated
- Actuator assembly for a heavy construction machine27 Nov 2025US 2025/0361889 A1Wipro Enterprises Pvt Ltd
Most cited
By later US patents
- Head section support for a surgical table apparatus119US 6,739,006 B2Hill-Rom Services, Inc. · 2004
- Leg section support for a surgical table80US 6,754,923 B2Hill-Rom Services, Inc. · 2004
- Hydraulic actuator apparatus for a surgical table45US 6,886,200 B2Hill-Rom Services, Inc. · 2005
- Self-regulated hydraulic control system37US 4,833,971 A1989
- Dual actuator air turbine starter valve35US 6,684,898 B2Honeywell International Inc. · 2004