F04C 28/22
By changing the eccentricity between cooperating members
Official title: by changing the eccentricity between cooperating members
F04C28/22 (By changing the eccentricity between cooperating members) appears on 56 US grants and 37 published applications in this corpus.
Search patents in F04C- Granted patents
- 56
- Published applications
- 37
- Assignees
- 26
- Inventors
- 79
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 3 |
| 2002 | 7 | 2 |
| 2003 | 2 | 3 |
| 2004 | 2 | 1 |
| 2005 | 2 | 10 |
| 2006 | 6 | 1 |
| 2007 | 2 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 2 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Scroll compressor19 May 2026US 12,631,181 B2Kabushiki Kaisha Toyota Jidoshokki
- Radial compliance mechanism to urge orbiting member to any desired direction and star scroll compressor29 Aug 2023US 11,739,753 B1
- Vane pump with improved seal assembly for control chamber23 Aug 2022US 11,421,685 B2Stackpole International Engineered Products, Ltd.
- Gaseous fluid compression device11 May 2021US 11,002,272 B2Hanon Systems
- Fluid machinery, heat exchange equipment, and operating method for fluid machinery9 Mar 2021US 10,941,771 B2Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
- Scroll compressor21 Aug 2025US 2025/0264101 A1Kabushiki Kaisha Toyota Jidoshokki
- Vane pump with improved seal assembly for control chamber29 Oct 2020US 2020/0340478 A1Stackpole International Engineered Products, Ltd.
- Active clearance management in screw compressor2 Jan 2020US 2020/0003214 A1Trane International Inc.
- Gaseous fluid compression device19 Sep 2019US 2019/0285066 A1Hanon Systems
- Fluid machinery, heat exchange equipment, and operating method for fluid machinery30 Aug 2018US 2018/0245591 A1Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
Most cited
By later US patents
- Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor194US 6,047,557 ACopeland Corporation · 2000
- Capacity modulated scroll machine162US 5,613,841 ACopeland Corporation · 1997
- Capacity modulated scroll machine156US 5,741,120 ACopeland Corporation · 1998
- Capacity modulated scroll machine119US 5,611,674 ACopeland Corporation · 1997
- Diagnostic system and method for a cooling system104US 6,679,072 B2Copeland Corporation · 2004