F02G 2270/00
Constructional features
F02G2270/00 (Constructional features) appears on 354 US grants and 191 published applications in this corpus.
Search patents in F02G- Granted patents
- 354
- Published applications
- 191
- Assignees
- 134
- Inventors
- 515
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 12 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 9 | 0 |
| 1984 | 14 | 0 |
| 1985 | 8 | 0 |
| 1986 | 12 | 0 |
| 1987 | 15 | 0 |
| 1988 | 12 | 0 |
| 1989 | 16 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 4 |
| 2003 | 4 | 4 |
| 2004 | 4 | 5 |
| 2005 | 3 | 6 |
| 2006 | 6 | 6 |
| 2007 | 1 | 5 |
| 2008 | 2 | 9 |
| 2009 | 5 | 3 |
| 2010 | 5 | 19 |
| 2011 | 1 | 11 |
| 2012 | 3 | 5 |
| 2013 | 12 | 5 |
| 2014 | 5 | 9 |
| 2015 | 8 | 10 |
| 2016 | 1 | 4 |
| 2017 | 14 | 12 |
| 2018 | 11 | 15 |
| 2019 | 9 | 7 |
| 2020 | 7 | 19 |
| 2021 | 14 | 6 |
| 2022 | 9 | 10 |
| 2023 | 4 | 6 |
| 2024 | 9 | 4 |
| 2025 | 6 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02G 2270/50Crosshead guiding pistonsIndexing code90
- F02G 2270/85CrankshaftsIndexing code73
- F02G 2270/40Piston assembliesIndexing code58
- F02G 2270/45Piston rodsIndexing code38
- F02G 2270/80Engines without crankshaftsIndexing code37
- F02G 2270/20Plural piston swash platesIndexing code34
- F02G 2270/70Liquid pistonsIndexing code28
- F02G 2270/42Displacer drivesIndexing code27
All 18 subgroupsShow fewer
- F02G 2270/10Rotary pistonsIndexing code22
- F02G 2270/30Displacer assembliesIndexing code22
- F02G 2270/90ValvesIndexing code20
- F02G 2270/55CylindersIndexing code18
- F02G 2270/02Pistons for reciprocating and rotatingIndexing code12
- F02G 2270/005ShellsIndexing code6
- F02G 2270/95Pressurised crankcasesIndexing code4
- F02G 2270/60Counterweights for pistonsIndexing code2
- F02G 2270/15Rotating cylindersIndexing code1
- F02G 2270/04Roller assemblies connecting opposed pistonsIndexing code0
Recent patents
- Maximum delivery adiabatic hot-air engine9 Jun 2026US 12,650,097 B1
- Single cylinder internally heated stirling engine24 Mar 2026US 12,584,454 B2
- Thermo-magnetic motor10 Mar 2026US 12,571,357 B1
- Engine displacer with regenerator channels4 Nov 2025US 12,460,600 B2Ekstera Inc.
- Alternative heat source for an engine19 Aug 2025US 12,392,279 B1
- Volumetric heat engine with piston-pendulum30 Jul 2026US 2026/0218647 A1
- Hot-gas free-piston stirling engine with efficient hot air inlet2 Apr 2026US 2026/0092576 A1Exowatt, Inc.
- Engine displacer with regenerator channels2 Oct 2025US 2025/0305468 A1Ekstera Inc.
- Single cylinder internally heated stirling engine4 Sep 2025US 2025/0277474 A1
- Stirling cycle machine27 Feb 2025US 2025/0067230 A1DEKA Products Limited Partnership
Most cited
By later US patents
- Apparatus and process for pressure swing adsorption separation100US 4,801,308 A1989
- Heat engine and heat pump94US 5,934,076 ANational Power PLC · 1999
- Ericsson cycle machine93US 4,984,432 A1991
- Method and apparatus for gas separation and synthesis77US 4,702,903 A1987
- High efficiency positive displacement thermodynamic system67US 8,424,284 B22013