F04B 27/20
Of pumps with rotary cylinder block
Official title: of pumps with rotary cylinder block
F04B27/20 (Of pumps with rotary cylinder block) appears on 24 US grants and 25 published applications in this corpus.
Search patents in F04B- Granted patents
- 24
- Published applications
- 25
- Assignees
- 17
- Inventors
- 44
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 3 |
| 2015 | 1 | 2 |
| 2016 | 1 | 3 |
| 2017 | 5 | 0 |
| 2018 | 2 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 4 |
| 2021 | 1 | 0 |
| 2022 | 1 | 4 |
| 2023 | 4 | 2 |
| 2024 | 3 | 0 |
| 2025 | 0 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Straight axis variable displacement piston pump with rotating swash plate14 Apr 2026US 12,601,333 B2Hamilton Sundstrand Corporation
- Hydraulic pump with swash plate tilt control3 Feb 2026US 12,540,605 B2Nabtesco Corporation
- Capacity control valve31 Dec 2024US 12,180,950 B2Eagle Industry Co., Ltd.
- Swash plate-type compressor30 Jan 2024US 11,885,319 B2Hanon Systems
- Capacity control valve9 Jan 2024US 11,867,312 B2Eagle Industry Co., Ltd.
- Straight axis variable displacement piston pump with rotating swash plate25 Dec 2025US 2025/0389259 A1Hamilton Sundstrand Corporation
- Hydraulic pump22 Jun 2023US 2023/0193886 A1Nabtesco Corporation
- Method for controlling swash plate compressor and swash plate compressor2 Feb 2023US 2023/0035718 A1
- Capacity control valve7 Jul 2022US 2022/0213877 A1Eagle Industry Co., Ltd.
- Capacity control valve2 Jun 2022US 2022/0170564 A1Eagle Industry Co., Ltd.
Most cited
By later US patents
- Tiltable swash plate type compressor5US 5,517,900 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho · 1996
- Differential pressure control valve and variable displacement compressor having the differential pressure control valve5US 9,145,888 B2Kabushiki Kaisha Toyota Jidoshokki · 2015
- Capacity control valve having a throttle valve portion with a communication hole4US 11,603,832 B2Eagle Industry Co., Ltd. · 2023
- Variable displacement piston machine with a sensor3US 8,202,058 B2Sauer-Danfoss Inc. · 2012
- Hydraulic pump with swash plate tilt control2US 11,603,830 B2Nabtesco Corporation · 2023