F01L 13/0031
By modification of tappet or pushrod length
Official title: {by modification of tappet or pushrod length}
F01L13/0031 (By modification of tappet or pushrod length) appears on 228 US grants and 168 published applications in this corpus.
Search patents in F01L- Granted patents
- 228
- Published applications
- 168
- Assignees
- 80
- Inventors
- 404
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 6 | 8 |
| 2003 | 13 | 9 |
| 2004 | 9 | 5 |
| 2005 | 5 | 16 |
| 2006 | 12 | 14 |
| 2007 | 11 | 19 |
| 2008 | 14 | 11 |
| 2009 | 8 | 12 |
| 2010 | 11 | 5 |
| 2011 | 5 | 7 |
| 2012 | 9 | 6 |
| 2013 | 7 | 4 |
| 2014 | 5 | 8 |
| 2015 | 8 | 6 |
| 2016 | 7 | 6 |
| 2017 | 3 | 3 |
| 2018 | 2 | 7 |
| 2019 | 3 | 2 |
| 2020 | 6 | 4 |
| 2021 | 1 | 1 |
| 2022 | 4 | 1 |
| 2023 | 3 | 4 |
| 2024 | 1 | 2 |
| 2025 | 3 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rocker arm for brake with integrated hydraulic capsule7 Apr 2026US 12,595,755 B2Eaton Intelligent Power Limited
- Internal combustion engine with optimized intake system24 Feb 2026US 12,560,108 B2Dumarey Automotive Italia S.p.A.
- Hydraulic capsules for valvetrain assembly8 Apr 2025US 12,270,323 B2Eaton Intelligent Power Limited
- Tappet assembly for valve lift profile modification25 Feb 2025US 12,234,753 B2Cummins Inc.
- Valve-actuating device having a switching device7 Jan 2025US 12,188,381 B2AVL List GmbH
- Valve lift conversion control mechanism and valve system of engine9 Jul 2026US 2026/0193997 A1Weichai Power Co., Ltd.
- Internal combustion engine with optimized intake system4 Dec 2025US 2025/0369374 A1Dumarey Automotive Italia S.p.A.
- Engine Brake Capsule with Plunger Pad9 Oct 2025US 2025/0314209 A1Eaton Intelligent Power Limited
- Advanced Valve Train Assembly for Engine Brake and Cylinder Deactivation2 Oct 2025US 2025/0305428 A1Eaton Intelligent Power Limited
- Rocker Arm for Brake with Integrated Hydraulic Capsule27 Mar 2025US 2025/0101891 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Device for varying a valve timing and lift for an internal combustion engine58US 4,696,265 AToyota Jidosha Kabushiki Kaisha · 1987
- Electro-rheological valve control mechanism55US 5,103,779 A1992
- Low mass two-step valve lifter52US 5,431,133 AGeneral Motors Corporation · 1995
- Deactivation hydraulic valve lifter48US 6,513,470 B1Delphi Technologies, Inc. · 2003
- Valve control arrangement46US 4,671,221 ARobert Bosch GmbH · 1987