F02F 1/4228
Helically-shaped channels
Official title: {Helically-shaped channels (imparting a rotation to the charge in the cylinder F02B31/00)}
F02F1/4228 (Helically-shaped channels) appears on 64 US grants and 12 published applications in this corpus.
Search patents in F02F- Granted patents
- 64
- Published applications
- 12
- Assignees
- 24
- Inventors
- 99
- Latest grant
- 16 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 16 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas inlet duct generating an aerodynamic movement of gas within a cylinder16 Aug 2022US 11,415,042 B2Ifp Energies Nouvelles
- Gas inlet device with intersection of the inlet duct and the valve calibration inclined with respect to the fire face12 Oct 2021US 11,143,094 B2Ifp Energies Nouvelles
- Compression ignited combustion engine5 Oct 2021US 11,136,914 B2Scania CV AB
- Cylinder head of engine19 May 2020US 10,655,531 B2Mazda Motor Corporation
- Internal combustion engine and method for manufacturing the same10 Sep 2019US 10,408,174 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Gas inlet duct generating an aerodynamic movement of gas within a cylinder24 Mar 2022US 2022/0090535 A1Ifp Energies Nouvelles
- Gas inlet device with intersection of the inlet duct and the valve calibration inclined with respect to the fire face5 Aug 2021US 2021/0239035 A1Ifp Energies Nouvelles
- Compression ignited combustion engine5 Dec 2019US 2019/0368412 A1Scania CV AB
- Cylinder head of engine25 Jul 2019US 2019/0226388 A1Mazda Motor Corporation
- Internal combustion engine and method for manufacturing the same29 Dec 2016US 2016/0377036 A1Mitsubishi Heavy Industies, Ltd.
Most cited
By later US patents
- Internal combustion diesel engine53US 4,256,062 AVolkswagenwerk Aktiengesellschaft · 1981
- Internal combustion engine cylinder head variable swirl siamese type intake port structure, with auxiliary straight passage, pointing at spark plug, leading from mixture intake to downstream end of straight intake port33US 4,669,434 AToyota Jidosha Kabushiki Kaisha · 1987
- Helically-shaped intake port of an internal combustion engine27US 4,312,309 AToyota Jidosha Kogyo Kabushiki Kaisha · 1982
- Intake spiral device and/or turbulence device for combustion engines22US 4,760,821 AMotoren-Werke Mannheim AG vorm. Benz Abt. stat. Motorenbau. · 1988
- Intake system for an internal combustion engine22US 5,765,525 AFord Global Technologies, LLC · 1998