F02M 3/00
Idling devices for carburettors
Official title: Idling devices for carburettors (with means for facilitating engine's idling below operational temperatures F02M1/00)
F02M3/00 (Idling devices for carburettors) appears on 731 US grants and 107 published applications in this corpus.
Search patents in F02M- Granted patents
- 731
- Published applications
- 107
- Assignees
- 177
- Inventors
- 1,072
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 20 | 0 |
| 1978 | 41 | 0 |
| 1979 | 22 | 0 |
| 1980 | 36 | 0 |
| 1981 | 43 | 0 |
| 1982 | 52 | 0 |
| 1983 | 57 | 0 |
| 1984 | 50 | 0 |
| 1985 | 47 | 0 |
| 1986 | 18 | 0 |
| 1987 | 21 | 0 |
| 1988 | 19 | 0 |
| 1989 | 18 | 0 |
| 1990 | 23 | 0 |
| 1991 | 24 | 0 |
| 1992 | 10 | 0 |
| 1993 | 18 | 0 |
| 1994 | 10 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 13 | 0 |
| 1998 | 14 | 0 |
| 1999 | 10 | 0 |
| 2000 | 10 | 0 |
| 2001 | 6 | 6 |
| 2002 | 10 | 9 |
| 2003 | 12 | 3 |
| 2004 | 7 | 6 |
| 2005 | 3 | 8 |
| 2006 | 12 | 4 |
| 2007 | 6 | 6 |
| 2008 | 7 | 5 |
| 2009 | 2 | 6 |
| 2010 | 3 | 3 |
| 2011 | 0 | 3 |
| 2012 | 1 | 4 |
| 2013 | 5 | 5 |
| 2014 | 2 | 7 |
| 2015 | 10 | 9 |
| 2016 | 5 | 4 |
| 2017 | 5 | 5 |
| 2018 | 4 | 4 |
| 2019 | 3 | 1 |
| 2020 | 5 | 3 |
| 2021 | 4 | 1 |
| 2022 | 5 | 3 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Fuel regulator25 Nov 2025US 12,480,461 B2Yamabiko Corporation
- Carburettor assembly30 Sep 2025US 12,429,016 B2Husqvarna AB
- Charge forming device with tamper resistant adjustable valve19 Sep 2023US 11,761,403 B2Walbro Corporation
- Limiting cap8 Aug 2023US 11,719,195 B2Yamabiko Corporation
- Fuel bowl27 Sep 2022US 11,454,196 B1
- Fuel regulator25 Jan 2024US 2024/0026841 A1Yamabiko Corporation
- Carburettor assembly29 Jun 2023US 2023/0204005 A1Husqvarna AB
- Carburetor with adjusting tool for garden machinery engine with anti-flow tampering function31 Mar 2022US 2022/0099048 A1
- Carburetor and two-stroke engine with a carburetor27 Jan 2022US 2022/0025837 A1Andreas Stihl AG & CO.KG
- Charge forming device with tamper resistant adjustable valve27 Jan 2022US 2022/0025838 A1Walbro Corporation
Most cited
By later US patents
- Thread securing device using adhesive77US 4,904,136 AMitsubishi Denki Kabushiki Kaisha · 1990
- Air/fuel ratio control for an internal combustion engine using an exhaust gas sensor70US 4,252,098 AChrysler Corporation · 1981
- Carburetor needle valve and limiter cap installation and adjustment apparatus61US 5,984,281 AWalbro Corporation · 1999
- Carburetor and method and apparatus for controlling air/fuel ratio of same57US 5,611,312 AWalbro Corporation · 1997
- Adapter means for creating an open loop manually adjustable apparatus and system for selectively controlling the air-fuel ratio supplied to a combustion engine54US 4,556,032 AColt Industries Operating Corp. · 1985