F01L 1/14
Tappets
Official title: Tappets {(hydraulic tappets for automatically adjusting or compensating clearance F01L1/24)}; Push rods
F01L1/14 (Tappets) appears on 1,412 US grants and 1,081 published applications in this corpus.
Search patents in F01L- Granted patents
- 1,412
- Published applications
- 1,081
- Assignees
- 355
- Inventors
- 2,132
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 12 | 0 |
| 1988 | 12 | 0 |
| 1989 | 28 | 0 |
| 1990 | 16 | 0 |
| 1991 | 21 | 0 |
| 1992 | 23 | 0 |
| 1993 | 34 | 0 |
| 1994 | 30 | 0 |
| 1995 | 20 | 0 |
| 1996 | 23 | 0 |
| 1997 | 33 | 0 |
| 1998 | 41 | 0 |
| 1999 | 39 | 0 |
| 2000 | 24 | 0 |
| 2001 | 43 | 8 |
| 2002 | 34 | 39 |
| 2003 | 45 | 41 |
| 2004 | 39 | 48 |
| 2005 | 49 | 90 |
| 2006 | 64 | 81 |
| 2007 | 62 | 73 |
| 2008 | 56 | 54 |
| 2009 | 31 | 74 |
| 2010 | 41 | 46 |
| 2011 | 49 | 38 |
| 2012 | 41 | 41 |
| 2013 | 38 | 35 |
| 2014 | 39 | 29 |
| 2015 | 29 | 45 |
| 2016 | 25 | 67 |
| 2017 | 53 | 52 |
| 2018 | 44 | 33 |
| 2019 | 45 | 42 |
| 2020 | 52 | 41 |
| 2021 | 37 | 34 |
| 2022 | 28 | 23 |
| 2023 | 18 | 17 |
| 2024 | 12 | 12 |
| 2025 | 19 | 10 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Variable displacement valvetrain systems with rocker shaft porting and insert sleeves for engine cylinder deactivation22 Sep 2026US 12,742,403 B2GM Global Technology Operations LLC
- Variable duration valve train9 Jun 2026US 12,650,087 B1
- Pump actuator with improved fatigue life17 Mar 2026US 12,577,928 B2Eaton Intelligent Power Limited
- Internal combustion engine with optimized intake system24 Feb 2026US 12,560,108 B2Dumarey Automotive Italia S.p.A.
- Integrated rocker for engine braking with hydraulic lash adjuster24 Feb 2026US 12,560,111 B2Eaton Intelligent Power Limited
- Roller hydraulic valve lifter bearing10 Sep 2026US 2026/0266204 A1Roller Bearing Company of America, Inc.
- Engine13 Aug 2026US 2026/0235053 A1Ishikawa Energy Research Co., Ltd.
- Cylinder head structure for internal combustion engine25 Jun 2026US 2026/0176988 A1
- Overhead Valve Internal Combustion Engine28 May 2026US 2026/0146547 A1
- Valvetrain component component comprising an overload feature16 Apr 2026US 2026/0104000 A1Jacobs Vehicle Systems, Inc.
Most cited
By later US patents
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Powertrain component with adherent film having a graded composition132US 5,249,554 AFord Motor Company · 1993
- Electromagnetic valve actuator103US 4,794,890 AMagnavox Government and Industrial Electronics Company · 1989
- Marine hulls and drives97US 7,984,684 B22011
- Powertrain component with adherent amorphous or nanocrystalline ceramic coating system88US 5,309,874 AFord Motor Company · 1994