F02M 23/02
Apparatus for adding secondary air to fuel-air mixture: with personal control, or
Official title: with personal control, or with secondary-air valve controlled by main combustion-air throttle
F02M23/02 (Apparatus for adding secondary air to fuel-air mixture: with personal control, or) appears on 62 US grants and 41 published applications in this corpus.
Search patents in F02M- Granted patents
- 62
- Published applications
- 41
- Assignees
- 28
- Inventors
- 94
- Latest grant
- 8 Dec 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 4 |
| 2002 | 7 | 3 |
| 2003 | 3 | 5 |
| 2004 | 5 | 8 |
| 2005 | 7 | 3 |
| 2006 | 3 | 5 |
| 2007 | 5 | 4 |
| 2008 | 4 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 3 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Internal combustion engine and method for its operation8 Dec 2020US 10,858,985 B2Andreas Stihl AG & CO.KG
- External idle air bypass for carbureted engines31 Mar 2020US 10,605,205 B1
- Carburetor for a hand-guided power tool and hand-guided power tool16 May 2017US 9,650,950 B2Andreas Stihl AG & CO.KG
- Carburetor assembly30 Aug 2016US 9,429,109 B2Husqvarna AB
- Fresh gas supply device for an internal combustion engine2 Dec 2014US 8,899,041 B2KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Internal Combustion Engine and Method for Its Operation24 Oct 2019US 2019/0323418 A1Andreas Stihl AG & CO.KG
- A carburetor assembly23 Jun 2016US 2016/0177877 A1Husqvqrna AB
- Carburetor for a hand-guided power tool and hand-guided power tool7 Aug 2014US 2014/0216402 A1Andreas Stihl AG & CO.KG
- Fresh Gas Supply Device for an Internal Combustion Engine2 May 2013US 2013/0104541 A1KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Air valve sealing plug14 Mar 2013US 2013/0062547 A1Walbro Engine Management, L. L.C.
Most cited
By later US patents
- Bi-fuel control system and retrofit assembly for diesel engines231US 6,543,395 B2Gas Technologies LLC · 2003
- Bi-fuel control system and assembly for reciprocating diesel engine powered electric generators58US 6,250,260 B12001
- Internal combustion engine28US 6,418,891 B2Walbro Japan, Inc. · 2002
- Two-stroke cycle engine24US 6,257,179 B1Mitsubishi Heavy Industries, Ltd. · 2001
- Intake-negative-pressure-increasing apparatus for engine22US 7,174,883 B2Toyota Jidosha Kabushiki Kaisha · 2007