F02B 39/12
Drives characterised by use of couplings or clutches therein
Official title: Drives characterised by use of couplings or clutches therein (using fluid slip couplings for varying gear ratio F02B39/08)
F02B39/12 (Drives characterised by use of couplings or clutches therein) appears on 209 US grants and 181 published applications in this corpus.
Search patents in F02B- Granted patents
- 209
- Published applications
- 181
- Assignees
- 105
- Inventors
- 419
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 3 |
| 2003 | 5 | 5 |
| 2004 | 4 | 3 |
| 2005 | 3 | 3 |
| 2006 | 1 | 4 |
| 2007 | 0 | 10 |
| 2008 | 2 | 8 |
| 2009 | 5 | 6 |
| 2010 | 7 | 7 |
| 2011 | 1 | 6 |
| 2012 | 3 | 12 |
| 2013 | 11 | 10 |
| 2014 | 6 | 13 |
| 2015 | 11 | 17 |
| 2016 | 4 | 22 |
| 2017 | 18 | 9 |
| 2018 | 19 | 9 |
| 2019 | 12 | 12 |
| 2020 | 8 | 8 |
| 2021 | 6 | 4 |
| 2022 | 3 | 3 |
| 2023 | 5 | 1 |
| 2024 | 2 | 3 |
| 2025 | 4 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Clutch-type air compressor system and control method and control apparatus thereof15 Jul 2025US 12,359,634 B2Zf Commercial Vehicle Systems (Qingdao) Co., Ltd.
- Vessel propulsion apparatus, vessel, auxiliary machine-equipped engine, and torque fluctuation absorber1 Jul 2025US 12,344,361 B2Yamaha Hatsudoki Kabushiki Kaisha
- Car provided with a supercharged internal combustion engine25 Feb 2025US 12,234,764 B2Ferrari S.P. A.
- Engine braking in hydrogen internal combustion engines28 Jan 2025US 12,209,544 B1Eaton Intelligent Power Limited
- Propulsion assembly for a motor vehicle31 Dec 2024US 12,180,882 B2Ferrari S.P. A.
- Operating Modes for Two-Cycle Uniflow-Scavenged Diesel Engine21 Aug 2025US 2025/0264068 A1
- Clutch-type air compressor system and control method and control apparatus thereof8 May 2025US 2025/0146448 A1Zf Commercial Vehicle Systems (Qingdao) Co., Ltd.
- Motorcycle having an internal combustion engine with an output means and with a charging device for the internal combustion engine24 Apr 2025US 2025/0129739 A1Ktm AG
- Propulsion assembly for a motor vehicle18 Jul 2024US 2024/0240585 A1Ferrari S.P. A.
- Control system for diesel engine, diesel engine, and control method for diesel engine30 May 2024US 2024/0175402 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Turbocharged compund cycle ducted fan engine system66US 4,815,282 ATeledyne Industries, Inc. · 1989
- Differential driving supercharger and method for controlling the same60US 5,890,468 AKomatsu Ltd. · 1999
- Engine with speed responsive multi-ratio turbocharger drive46US 4,445,337 AGeneral Motors Corporation · 1984
- Motor assisted turbocharger44US 6,305,169 B12001
- Hybrid supercharged engine44US 6,343,473 B12002