F01L 1/2422
By means or a hydraulic adjusting device located between the push rod
Official title: {by means or a hydraulic adjusting device located between the push rod and rocker arm}
F01L1/2422 (By means or a hydraulic adjusting device located between the push rod) appears on 73 US grants and 61 published applications in this corpus.
Search patents in F01L- Granted patents
- 73
- Published applications
- 61
- Assignees
- 29
- Inventors
- 127
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 5 |
| 2003 | 4 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 2 |
| 2007 | 1 | 1 |
| 2008 | 2 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 3 |
| 2012 | 0 | 2 |
| 2013 | 3 | 3 |
| 2014 | 5 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 7 |
| 2017 | 3 | 1 |
| 2018 | 3 | 8 |
| 2019 | 1 | 5 |
| 2020 | 9 | 5 |
| 2021 | 5 | 4 |
| 2022 | 5 | 3 |
| 2023 | 0 | 1 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Lost motion variable valve actuation systems and method13 May 2025US 12,297,757 B2Jacobs Vehicle Systems, Inc.
- Switching element for a valve train of an internal combustion engine18 Jun 2024US 12,012,874 B2Schaeffler Technologies AG & Co. KG
- Valve train assembly7 May 2024US 11,976,577 B2Eaton Intelligent Power Limited
- Selective resetting lost motion engine valve train components9 Apr 2024US 11,952,923 B2Jacobs Vehicle Systems, Inc.
- Valve actuation system comprising in-series lost motion components deployed in a pre-rocker arm valve train component and valve bridge6 Dec 2022US 11,519,307 B2Jacobs Vehicle Systems, Inc.
- Rocker system, camshaft, and valve train for use with an internal combustion engine13 Feb 2025US 2025/0052178 A1Cummins Inc.
- Discrete lost motion device18 Apr 2024US 2024/0125254 A1Jacobs Vehicle Systems, Inc.
- Switching element for a valve train of an internal combustion engine3 Aug 2023US 2023/0243280 A1Schaeffler Technologies AG & Co. KG
- Valve actuation system comprising in-series lost motion components deployed in a pre-rocker arm valve train component and valve bridge22 Sep 2022US 2022/0298935 A1Jacobs Vehicle Systems, Inc.
- Self-resetting single-valve hydraulic drive device and method based on primary and secondary pistons for push rod engine2 Jun 2022US 2022/0170391 A1Jiangsu Jointek Precision Machinery Co., Ltd.
Most cited
By later US patents
- Internal combustion engines with combined cam and electro-hydraulic engine valve control86US 5,680,841 ADiesel Engine Retarders, Inc. · 1997
- System and method for controlling the amount of lost motion between an engine valve and a valve actuation means83US 5,829,397 ADiesel Engine Retarders, Inc. · 1998
- Internal combustion engine with combined cam and electro-hydraulic engine valve control50US 6,244,257 B1Diesel Engine Retarders, Inc. · 2001
- Low mass roller valve lifter assembly45US 5,307,769 AGeneral Motors Corporation · 1994
- Internal combustion engines with combined cam and electro-hydraulic engine valve control44US 5,839,453 ADiesel Engine Retarders, Inc. · 1998