F16D 2048/0227
Source of pressure producing the clutch engagement or disengagement action within a
Official title: {Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices}
F16D2048/0227 (Source of pressure producing the clutch engagement or disengagement action within a) appears on 226 US grants and 207 published applications in this corpus.
Search patents in F16D- Granted patents
- 226
- Published applications
- 207
- Assignees
- 117
- Inventors
- 468
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 2 |
| 2002 | 10 | 5 |
| 2003 | 7 | 2 |
| 2004 | 2 | 3 |
| 2005 | 2 | 2 |
| 2006 | 2 | 6 |
| 2007 | 2 | 4 |
| 2008 | 3 | 10 |
| 2009 | 4 | 12 |
| 2010 | 4 | 4 |
| 2011 | 3 | 9 |
| 2012 | 5 | 8 |
| 2013 | 13 | 21 |
| 2014 | 15 | 10 |
| 2015 | 12 | 6 |
| 2016 | 9 | 21 |
| 2017 | 15 | 16 |
| 2018 | 16 | 16 |
| 2019 | 12 | 5 |
| 2020 | 11 | 9 |
| 2021 | 8 | 9 |
| 2022 | 9 | 4 |
| 2023 | 3 | 10 |
| 2024 | 8 | 8 |
| 2025 | 6 | 2 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for controlling a hydraulic control device21 Oct 2025US 12,449,007 B2Schaeffler Technologies AG & Co. KG
- Propulsion and braking system using clutch5 Aug 2025US 12,379,005 B2Stxengine Co., Ltd
- Method for actuating a hydraulic device17 Jun 2025US 12,331,830 B2Schaeffler Technologies AG & Co. KG
- Control device13 May 2025US 12,297,877 B2Honda Motor Co., Ltd.
- Shared clutch control for manual transmission with a hybrid drive4 Feb 2025US 12,214,668 B2Toyota Research Institute, Inc.
- 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
- Arrangement and method for requirement-based distribution of cooling/lubricating oil flows in electric traction drives23 Jul 2026US 2026/0213619 A1MAGNA Powertrain AG & Co KG
- Adaptive platform for hydraulic clutches12 Jun 2025US 2025/0188998 A1Pt Tech, LLC
- Movable pedal box5 Jun 2025US 2025/0178573 A1
Most cited
By later US patents
- Multiple-clutch device45US 6,523,657 B1Mannesmann Sachs AG · 2003
- Power transmission system for working vehicle40US 7,673,712 B2Kanzaki Kokyukoki Mfg.Co., Ltd. · 2010
- Multiple-clutch device37US 6,464,059 B1Mannesmann Sachs AG · 2002
- Clutch system37US 6,789,658 B2ZF Sachs AG · 2004
- Modular prefilled hydraulic control apparatus36US 5,018,352 AAutomotive Products plc · 1991