F16D 2048/029
Hydraulic circuits combining clutch actuation with clutch lubrication or cooling
Official title: {Hydraulic circuits combining clutch actuation with clutch lubrication or cooling}
F16D2048/029 (Hydraulic circuits combining clutch actuation with clutch lubrication or cooling) appears on 49 US grants and 51 published applications in this corpus.
Search patents in F16D- Granted patents
- 49
- Published applications
- 51
- Assignees
- 38
- Inventors
- 125
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 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 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 5 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 0 |
| 2006 | 3 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 2 | 2 |
| 2012 | 1 | 6 |
| 2013 | 2 | 6 |
| 2014 | 7 | 8 |
| 2015 | 5 | 1 |
| 2016 | 2 | 2 |
| 2017 | 2 | 2 |
| 2018 | 2 | 3 |
| 2019 | 3 | 2 |
| 2020 | 3 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 3 | 4 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for detecting a safe state of a valve of a hydraulic system17 Feb 2026US 12,552,340 B2Schaeffler Technologies AG & Co. KG
- In-shaft selective lube implementation for a wet clutch17 Jun 2025US 12,331,792 B1Dana Belgium N.V.
- Clutch assembly28 May 2024US 11,994,174 B1GKN Automotive AG
- Actuation method for a hydraulic system having a pump and valves for supplying multiple consumers and a cooling and/or lubricating device, and hydraulic system5 Mar 2024US 11,920,645 B2Schaeffler Technologies AG & Co. KG
- System for operating and lubricating clutch of work vehicle23 Jan 2024US 11,879,509 B2Daedong Corporation
- Hydraulic system, hybrid transmission, and vehicle10 Sep 2026US 2026/0266342 A1Chery Automobile Co., Ltd.
- High-pressure hydraulic clutch cooling system for work vehicles30 Jul 2026US 2026/0218761 A1Deere & Company
- Method for detecting a safe state of a valve of a hydraulic system30 Oct 2025US 2025/0333014 A1Schaeffler Technologies AG & Co. KG
- Hydraulic assembly, friction clutch and method for operating a friction clutch24 Oct 2024US 2024/0352981 A1Schaeffler Technologies AG & Co. KG
- Duct valve for clutch assembly in off-road vehicles12 Sep 2024US 2024/0301924 A1Arctic Cat Inc.
Most cited
By later US patents
- Multiple-clutch device45US 6,523,657 B1Mannesmann Sachs AG · 2003
- Multiple-clutch device37US 6,464,059 B1Mannesmann Sachs AG · 2002
- Multiple-clutch device26US 6,454,074 B1Mannesmann Sachs AG · 2002
- Multiple-clutch device20US 6,491,149 B1Mannesmann Sachs AG · 2002
- Multiple-clutch device16US 6,499,578 B1Mannesmann Sachs AG · 2002