F01L 1/25
Between cam and valve stem
Official title: between cam and valve stem
F01L1/25 (Between cam and valve stem) appears on 193 US grants and 49 published applications in this corpus.
Search patents in F01L- Granted patents
- 193
- Published applications
- 49
- Assignees
- 62
- Inventors
- 251
- Latest grant
- 11 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 2 | 0 |
| 1986 | 9 | 0 |
| 1987 | 16 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 10 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 4 |
| 2007 | 2 | 7 |
| 2008 | 4 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 1 |
| 2011 | 3 | 4 |
| 2012 | 2 | 1 |
| 2013 | 2 | 4 |
| 2014 | 5 | 0 |
| 2015 | 1 | 3 |
| 2016 | 1 | 2 |
| 2017 | 2 | 4 |
| 2018 | 4 | 1 |
| 2019 | 3 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Multi-cylinder internal combustion engine, with cylinders equipped with intake valve variable actuation systems having hydraulic circuits which cross each other11 Mar 2025US 12,247,502 B2C. R. F. Societa Consortile per Azioni
- Internal combustion engine with fast combustion and method of control of such an engine4 Jul 2023US 11,692,465 B2C. R. F. Societa Consortile per Azioni
- Switching tappet or a roller finger follower for compression release braking5 Jul 2022US 11,377,985 B2Cummins Inc.
- Engine valve lifter having anti-rotation plug23 Jun 2020US 10,690,016 B2Eaton Intelligent Power Limited
- Determining sliding camshaft actuator pin position based on engine crankshaft angle9 Jul 2019US 10,344,734 B2GM Global Technology Operations LLC
- Multi-cylinder internal combustion engine, with cylinders equipped with intake valve variable actuation systems having hydraulic circuits which cross each other16 Jan 2025US 2025/0020072 A1C. R. F. Societa Consortile per Azioni
- Internal combustion engine with fast combustion and method of control of such an engine4 Aug 2022US 2022/0243621 A1C. R. F. Societa Consortile per Azioni
- Switching tappet or a roller finger follower for compression release braking2 Jul 2020US 2020/0208547 A1Cummins Inc.
- Determining sliding camshaft actuator pin position based on engine crankshaft angle3 Jan 2019US 2019/0003446 A1GM Global Technology Operations LLC
- Engine valve lifter having anti-rotation plug20 Dec 2018US 2018/0363513 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Arrangement for electromagnetically operated actuators68US 4,515,343 AFev Forschungsgesellschaft fur Energietechnik und ver Brennungsmotoren mbH · 1985
- Low mass two-step valve lifter52US 5,431,133 AGeneral Motors Corporation · 1995
- Valve control arrangement46US 4,671,221 ARobert Bosch GmbH · 1987
- Compact valve lifters45US 5,361,733 AGeneral Motors Corporation · 1994
- Compact valve lifters41US 5,398,648 AGeneral Motors Corporation · 1995