F15B 1/024
Used as a supplementary power source
Official title: {used as a supplementary power source, e.g. to store energy in idle periods to balance pump load}
F15B1/024 (Used as a supplementary power source) appears on 383 US grants and 462 published applications in this corpus.
Search patents in F15B- Granted patents
- 383
- Published applications
- 462
- Assignees
- 193
- Inventors
- 716
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 4 |
| 2003 | 6 | 7 |
| 2004 | 8 | 9 |
| 2005 | 8 | 6 |
| 2006 | 5 | 9 |
| 2007 | 5 | 10 |
| 2008 | 5 | 11 |
| 2009 | 7 | 20 |
| 2010 | 8 | 13 |
| 2011 | 15 | 17 |
| 2012 | 19 | 33 |
| 2013 | 15 | 31 |
| 2014 | 11 | 39 |
| 2015 | 18 | 33 |
| 2016 | 28 | 29 |
| 2017 | 32 | 28 |
| 2018 | 20 | 23 |
| 2019 | 22 | 21 |
| 2020 | 31 | 14 |
| 2021 | 25 | 27 |
| 2022 | 20 | 21 |
| 2023 | 18 | 18 |
| 2024 | 21 | 16 |
| 2025 | 16 | 18 |
| 2026 | 11 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for transferring hydraulic power between a pump and an actuator15 Sep 2026US 12,736,071 B2Allu Innovation and Research Center Oy
- Energy storage and reutilization for a single-rod electro-hydrostatic actuator9 Jun 2026US 12,650,138 B2University of Manitoba
- Hydraulic circuit for a patient handling apparatus19 May 2026US 12,629,299 B2Stryker Corporation
- Hydraulic drive system having a 2×2Q pump unit19 May 2026US 12,631,200 B2HMS-HYBRID MOTION SOLUTIONS GmbH
- Energy recovery charging of an accumulator in a low-pressure compensation circuit of an electro-hydrostatic actuator21 Apr 2026US 12,607,205 B2University of Manitoba
- Method and system for transferring hydraulic power between a pump and an actuator6 Aug 2026US 2026/0226926 A1Allu Innovation and Research Center Oy
- Work machine6 Aug 2026US 2026/0226927 A1Komatsu Ltd.
- Medium pressure accumulator with fast fill supply valve and brake system using same21 May 2026US 2026/0138577 A1ZF Active Safety US Inc.
- Linear actuator with energy recuperation capability27 Nov 2025US 2025/0361888 A1Purdue Research Foundation
- Energy recovery apparatus20 Nov 2025US 2025/0354351 A1Readi Robust Machine Co., Ltd.
Most cited
By later US patents
- 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
- Hydraulic system, manifold and volumetric compensator73US 6,519,939 B1M-Mac Actuators, Inc. · 2003
- Hydraulic energy storage systems66US 7,107,767 B2Shep Limited · 2006
- System for recovering energy in hydraulic circuit65US 6,789,387 B2Caterpillar Inc. · 2004