F04C 27/005
Axial sealings for working fluid
Official title: {Axial sealings for working fluid}
F04C27/005 (Axial sealings for working fluid) appears on 670 US grants and 549 published applications in this corpus.
Search patents in F04C- Granted patents
- 670
- Published applications
- 549
- Assignees
- 177
- Inventors
- 1,152
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 15 | 0 |
| 1996 | 15 | 0 |
| 1997 | 14 | 0 |
| 1998 | 18 | 0 |
| 1999 | 8 | 0 |
| 2000 | 30 | 0 |
| 2001 | 20 | 6 |
| 2002 | 18 | 20 |
| 2003 | 19 | 21 |
| 2004 | 21 | 18 |
| 2005 | 13 | 13 |
| 2006 | 13 | 19 |
| 2007 | 9 | 20 |
| 2008 | 15 | 18 |
| 2009 | 10 | 18 |
| 2010 | 12 | 20 |
| 2011 | 15 | 20 |
| 2012 | 14 | 17 |
| 2013 | 12 | 15 |
| 2014 | 13 | 32 |
| 2015 | 20 | 31 |
| 2016 | 22 | 21 |
| 2017 | 26 | 26 |
| 2018 | 25 | 16 |
| 2019 | 20 | 39 |
| 2020 | 18 | 33 |
| 2021 | 41 | 16 |
| 2022 | 15 | 26 |
| 2023 | 23 | 22 |
| 2024 | 36 | 21 |
| 2025 | 25 | 24 |
| 2026 | 15 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pressure control valve6 Oct 2026US 12,753,762 B2Eagle Industry Co., Ltd.
- Scroll compressor15 Sep 2026US 12,736,052 B2Kabushiki Kaisha Toyota Jidoshokki
- Scroll device with tip seals and backup seals25 Aug 2026US 12,716,415 B2Air Squared, Inc.
- Electric compressor with integrated vapor injection circuit28 Jul 2026US 12,692,865 B1Mahle International GmbH
- Sealing gasket with one or more positioning protrusions7 Jul 2026US 12,674,457 B2Edwards Limited
- Scroll compressor with a sealing ring for a fixed disk check valve8 Oct 2026US 2026/0309151 A1Hitachi-Johnson Controls Air Conditioning, Inc.
- Scroll fluid machine with elastic member27 Aug 2026US 2026/0251140 A1Anest Iwata Corporation
- Scroll compressor13 Aug 2026US 2026/0235122 A1Hanon Systems
- Compressor including end cap having internal features and methods of assembling the same13 Aug 2026US 2026/0235124 A1
- Electric compressor with integrated vapor injection circuit30 Jul 2026US 2026/0218703 A1Mahle International GmbH
Most cited
By later US patents
- Scroll-type machine with axially compliant mounting226US 4,877,382 ACopeland Corporation · 1989
- Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor194US 6,047,557 ACopeland Corporation · 2000
- Compressor pulse width modulation172US 6,213,731 B1Copeland Corporation · 2001
- Capacity modulated scroll machine162US 5,613,841 ACopeland Corporation · 1997
- Capacity modulated scroll machine156US 5,741,120 ACopeland Corporation · 1998