F01C 19/00
Sealing arrangements in rotary-piston machines or engines
Official title: Sealing arrangements in rotary-piston machines or engines (sealings in general F16J)
F01C19/00 (Sealing arrangements in rotary-piston machines or engines) appears on 603 US grants and 412 published applications in this corpus.
Search patents in F01C- Granted patents
- 603
- Published applications
- 412
- Assignees
- 290
- Inventors
- 981
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 63 | 0 |
| 1977 | 36 | 0 |
| 1978 | 17 | 0 |
| 1979 | 9 | 0 |
| 1980 | 11 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 10 | 0 |
| 1985 | 9 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 12 | 0 |
| 1989 | 11 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 0 |
| 2003 | 0 | 8 |
| 2004 | 3 | 4 |
| 2005 | 5 | 12 |
| 2006 | 9 | 10 |
| 2007 | 9 | 15 |
| 2008 | 4 | 13 |
| 2009 | 7 | 18 |
| 2010 | 6 | 18 |
| 2011 | 9 | 16 |
| 2012 | 14 | 25 |
| 2013 | 14 | 27 |
| 2014 | 20 | 32 |
| 2015 | 19 | 30 |
| 2016 | 20 | 19 |
| 2017 | 24 | 21 |
| 2018 | 19 | 22 |
| 2019 | 22 | 20 |
| 2020 | 15 | 23 |
| 2021 | 22 | 18 |
| 2022 | 21 | 13 |
| 2023 | 15 | 19 |
| 2024 | 26 | 10 |
| 2025 | 14 | 14 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01C 19/005Structure and composition of sealing elements such as sealing strips, sealing rings185
- F01C 19/08Axially-movable sealings for working fluids185
- F01C 19/02Radially-movable sealings for working fluids176
- F01C 19/12Sealing arrangements in rotary-piston machines or engines: for other than working fluid69
- F01C 19/10Sealings for working fluids between radially and axially movable parts45
Recent patents
- Scroll device with tip seals and backup seals25 Aug 2026US 12,716,415 B2Air Squared, Inc.
- Sealing gasket25 Aug 2026US 12,716,493 B2Edwards Limited
- Fretting resistant rotary engine housings18 Aug 2026US 12,709,983 B2Pratt & Whitney Canada Corp.
- Self-cooled rotary engine and pump12 May 2026US 12,624,656 B1
- Rotary piston machine3 Feb 2026US 12,540,572 B2
- Scroll fluid machine with elastic member27 Aug 2026US 2026/0251140 A1Anest Iwata Corporation
- Rotary Engine Housing16 Jul 2026US 2026/0201831 A1Pratt & Whitney Canada Corp.
- Housing assembly for rotary engine and method of manufacturing thereof19 Mar 2026US 2026/0078695 A1Pratt & Whitney Canada Corp.
- Scroll pump15 Jan 2026US 2026/0016007 A1Edwards Limited
- Seal assembly for progressive cavity pump4 Dec 2025US 2025/0369442 A1National Oilwell Varco, L. P.
Most cited
By later US patents
- Scroll-type machine with axially compliant mounting226US 4,877,382 ACopeland Corporation · 1989
- Scroll-type machine with axially compliant mounting122US 4,767,293 ACopeland Corporation · 1988
- Non-orbiting scroll mounting arrangements for a scroll machine115US 5,102,316 ACopeland Corporation · 1992
- Axial compliance means with radial sealing for scroll-type apparatus80US 3,994,636 AArthur D. Little, Inc. · 1976
- Scroll compressor having a partition defining a discharge chamber67US 5,427,511 ACopeland Corporation · 1995