F15B 2211/212
The pressure sources being accumulators
Official title: the pressure sources being accumulators
F15B2211/212 (The pressure sources being accumulators) appears on 505 US grants and 522 published applications in this corpus.
Search patents in F15B- Granted patents
- 505
- Published applications
- 522
- Assignees
- 290
- Inventors
- 1,017
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 9 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 6 | 5 |
| 2003 | 3 | 8 |
| 2004 | 4 | 7 |
| 2005 | 12 | 12 |
| 2006 | 9 | 7 |
| 2007 | 2 | 9 |
| 2008 | 2 | 10 |
| 2009 | 6 | 21 |
| 2010 | 6 | 16 |
| 2011 | 16 | 14 |
| 2012 | 10 | 18 |
| 2013 | 12 | 38 |
| 2014 | 17 | 34 |
| 2015 | 19 | 36 |
| 2016 | 29 | 36 |
| 2017 | 34 | 37 |
| 2018 | 33 | 24 |
| 2019 | 21 | 37 |
| 2020 | 39 | 23 |
| 2021 | 32 | 26 |
| 2022 | 28 | 29 |
| 2023 | 24 | 28 |
| 2024 | 32 | 19 |
| 2025 | 18 | 22 |
| 2026 | 14 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Work machine accessory motor load protection8 Sep 2026US 12,729,699 B2Caterpillar Inc.
- Energy storage and reutilization for a single-rod electro-hydrostatic actuator9 Jun 2026US 12,650,138 B2University of Manitoba
- Apparatus for control of multiple fluid powered actuators26 May 2026US 12,638,028 B2Universal City Studios LLC
- Hydraulic drive system having a 2×2Q pump unit19 May 2026US 12,631,200 B2HMS-HYBRID MOTION SOLUTIONS GmbH
- Work machine6 Aug 2026US 2026/0226927 A1Komatsu Ltd.
- Turbo engine including a system to control pitch of a propeller blade4 Jun 2026US 2026/0153033 A1General Electric Company
- Displacement Power Controllers and Applications5 Mar 2026US 2026/0063150 A1Perisseuma Technologies LLC
- Gangway having self-raising assembly26 Feb 2026US 2026/0054947 A1Safe Rack LLC
- 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
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Linear servoactuator with integrated transformer position sensor158US 4,628,499 AScientific-Atlanta, Inc. · 1986
- Accumulator engine103US 5,579,640 AThe United States of America as represented by the Administrator of the Environmental Protection Agency · 1996
- Systems and methods for energy storage and recovery using compressed gas96US 7,832,207 B2SustainX, Inc. · 2010
- Closed-system electrohydraulic actuator93US 7,051,526 B2Moog Inc. · 2006