F02M 61/20
Closing valves mechanically
Official title: Closing valves mechanically, e.g. arrangements of springs or weights {or permanent magnets; Damping of valve lift}
F02M61/20 (Closing valves mechanically) appears on 494 US grants and 329 published applications in this corpus.
Search patents in F02M- Granted patents
- 494
- Published applications
- 329
- Assignees
- 159
- Inventors
- 814
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 10 | 0 |
| 1984 | 10 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 9 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 13 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 8 | 0 |
| 1997 | 13 | 0 |
| 1998 | 14 | 0 |
| 1999 | 19 | 0 |
| 2000 | 11 | 0 |
| 2001 | 15 | 5 |
| 2002 | 13 | 16 |
| 2003 | 23 | 32 |
| 2004 | 23 | 30 |
| 2005 | 19 | 17 |
| 2006 | 18 | 23 |
| 2007 | 16 | 21 |
| 2008 | 8 | 11 |
| 2009 | 10 | 11 |
| 2010 | 8 | 14 |
| 2011 | 9 | 6 |
| 2012 | 8 | 5 |
| 2013 | 5 | 10 |
| 2014 | 4 | 8 |
| 2015 | 7 | 16 |
| 2016 | 14 | 12 |
| 2017 | 14 | 24 |
| 2018 | 13 | 10 |
| 2019 | 16 | 14 |
| 2020 | 10 | 10 |
| 2021 | 4 | 8 |
| 2022 | 10 | 4 |
| 2023 | 7 | 3 |
| 2024 | 1 | 5 |
| 2025 | 5 | 7 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electromagnetic fuel injector1 Sep 2026US 12,723,563 B2Marelli Europe S.P.A.
- Fuel injector and valve assembly for the same30 Jun 2026US 12,669,104 B2Cummins Inc.
- Solenoid device and electromagnetic valve for fuel injection system18 Nov 2025US 12,473,880 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Force modification of passive valve spools for control of nozzles28 Oct 2025US 12,454,915 B2Hamilton Sundstrand Corporation
- Injection control valve in fuel injector configured for pressure relief17 Jun 2025US 12,331,708 B2Caterpillar Inc.
- Variable orifice fuel injection nozzle10 Sep 2026US 2026/0266251 A1
- Fuel injector for direct injection of gaseous fuel23 Jul 2026US 2026/0210318 A1Phinia Delphi Luxembourg Sarl
- Electromagnetic actuator and fuel injection device23 Jul 2026US 2026/0210319 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Fuel injector9 Jul 2026US 2026/0194034 A1
- Electromagnetic fuel injection valve30 Apr 2026US 2026/0117732 A1Hitachi Astemo, Ltd.
Most cited
By later US patents
- Electromaagnetic high-pressure injection valve75US 5,127,585 ASiemens Aktiengesellschaft · 1992
- Accumulator fuel injection system70US 5,241,935 AServojet Electronic Systems, Ltd. · 1993
- Electromagnetically operated injection valve with a fuel filter that sets a spring force68US 5,340,032 ARobert Bosch GmbH · 1994
- Fluid control valves65US 4,183,467 ALucas Industries Limited · 1980
- Measuring valve for dosing liquids or gases64US 4,725,002 ARobert Bosch GmbH · 1988