F01C 19/125
Shaft sealings specially adapted for rotary or oscillating-piston machines or engines
Official title: {Shaft sealings specially adapted for rotary or oscillating-piston machines or engines}
F01C19/125 (Shaft sealings specially adapted for rotary or oscillating-piston machines or engines) appears on 26 US grants and 23 published applications in this corpus.
Search patents in F01C- Granted patents
- 26
- Published applications
- 23
- Assignees
- 28
- Inventors
- 61
- Latest grant
- 26 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 3 | 4 |
| 2013 | 3 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 3 |
| 2022 | 3 | 1 |
| 2023 | 2 | 0 |
| 2024 | 2 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- High pressure gas sealing26 Nov 2024US 12,152,598 B2Dover Pumps & Process Solutions Segment, Inc.
- Seal assembly for high pressure single screw compressor9 Jan 2024US 11,867,180 B2Copeland Industrial LP
- High pressure gas sealing17 Oct 2023US 11,788,541 B2Dover Pumps & Process Solutions Segment, Inc.
- Expander system26 Sep 2023US 11,767,784 B2Volvo Car Corporation
- Rotary piston and cylinder with the rotor including a formation and bearing arrangement27 Dec 2022US 11,536,139 B2Lontra Limited
- High pressure gas sealing13 Mar 2025US 2025/0084863 A1Dover Pumps & Process Solutions Segment, Inc.
- High pressure gas sealing7 Mar 2024US 2024/0077083 A1Dover Pumps & Process Solutions Segment, Inc.
- Expander system7 Jul 2022US 2022/0213828 A1Volvo Car Corporation
- High pressure gas sealing18 Nov 2021US 2021/0355954 A1Dover Pumps & Process Solutions Segment, Inc.
- Scroll type expander19 Aug 2021US 2021/0254466 A1Sanden Automotive Components Corporation
Most cited
By later US patents
- Shaft seal and bearing members for a rotary screw compressor23US 5,009,583 ASvenska Rotor Maskiner AB · 1991
- Joint seal on the rotor drive of an eccentric screw machine12US 4,305,596 ANetzsch-Mohnopumpen GmbH · 1981
- Rotary fluid pressure device11US 4,285,643 A1981
- Rotating positive displacement scroll apparatus with lubricating pump11US 4,549,861 ASundstrand Corporation · 1985
- Floating ring labyrinth-type dynamic shaft seal and process for using same10US 5,046,718 AThe Dow Chemical Company · 1991