F04B 27/0804
Having rotary cylinder block
Official title: {having rotary cylinder block}
F04B27/0804 (Having rotary cylinder block) appears on 100 US grants and 116 published applications in this corpus.
Search patents in F04B- Granted patents
- 100
- Published applications
- 116
- Assignees
- 63
- Inventors
- 261
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 3 |
| 2003 | 4 | 4 |
| 2004 | 0 | 4 |
| 2005 | 2 | 7 |
| 2006 | 0 | 4 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 0 | 6 |
| 2010 | 3 | 2 |
| 2011 | 2 | 5 |
| 2012 | 2 | 4 |
| 2013 | 0 | 9 |
| 2014 | 2 | 10 |
| 2015 | 6 | 17 |
| 2016 | 9 | 6 |
| 2017 | 12 | 6 |
| 2018 | 7 | 5 |
| 2019 | 6 | 5 |
| 2020 | 8 | 3 |
| 2021 | 2 | 2 |
| 2022 | 1 | 4 |
| 2023 | 3 | 1 |
| 2024 | 5 | 0 |
| 2025 | 0 | 1 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Coulisse—eccentric motor21 Jul 2026US 12,687,157 B2
- Straight axis variable displacement piston pump with rotating swash plate14 Apr 2026US 12,601,333 B2Hamilton Sundstrand Corporation
- Method for producing a water-hydraulic machine24 Mar 2026US 12,584,470 B2Danfoss A/S
- Capacity control valve31 Dec 2024US 12,180,950 B2Eagle Industry Co., Ltd.
- Pump body assembly and fluid machine3 Dec 2024US 12,158,139 B2Gree Electric Appliances, Inc. of Zhuhai
- Piston pump with pistons, crank rods, and ball joints17 Sep 2026US 2026/0275975 A1Lear Corporation
- Compressor10 Sep 2026US 2026/0266277 A1Sanden Corporation
- Coulisse - eccentric motor2 Apr 2026US 2026/0092598 A1
- Straight axis variable displacement piston pump with rotating swash plate25 Dec 2025US 2025/0389259 A1Hamilton Sundstrand Corporation
- Pump body assembly and fluid machine25 May 2023US 2023/0160376 A1Gree Electric Appliances, Inc. of Zhuhai
Most cited
By later US patents
- Multiple axis rotary compressor48US 5,304,043 AAvMed Compressor Corporation · 1994
- Guiding mechanism for reciprocating piston of piston type compressor45US 5,382,139 AKabushiki Kaisha Toyoda Jodoshokki Seisakusho · 1995
- Variable displacement compressor23US 10,519,944 B2Sanden Holdings Corporation · 2019
- Axial multi-piston compressor having rotary valve for allowing residual part of compressed fluid to escape19US 5,501,579 AKabushiki Kaisha Toyoda Jidoshokki Seisakusho · 1996
- Hybrid nutating pump18US 7,451,687 B2Thomas Industries, Inc. · 2008