F02B 39/04
Mechanical drives
Official title: Mechanical drives; Variable-gear-ratio drives (non-mechanical pump drives having variable gear ratio F02B39/08)
F02B39/04 (Mechanical drives) appears on 378 US grants and 384 published applications in this corpus.
Search patents in F02B- Granted patents
- 378
- Published applications
- 384
- Assignees
- 163
- Inventors
- 675
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 8 |
| 2002 | 9 | 6 |
| 2003 | 15 | 7 |
| 2004 | 5 | 7 |
| 2005 | 1 | 5 |
| 2006 | 7 | 10 |
| 2007 | 3 | 8 |
| 2008 | 2 | 9 |
| 2009 | 6 | 11 |
| 2010 | 6 | 21 |
| 2011 | 0 | 16 |
| 2012 | 12 | 16 |
| 2013 | 22 | 14 |
| 2014 | 14 | 20 |
| 2015 | 16 | 36 |
| 2016 | 11 | 44 |
| 2017 | 27 | 28 |
| 2018 | 42 | 27 |
| 2019 | 18 | 12 |
| 2020 | 24 | 28 |
| 2021 | 23 | 14 |
| 2022 | 12 | 8 |
| 2023 | 9 | 8 |
| 2024 | 13 | 10 |
| 2025 | 8 | 6 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Supercharged internal combustion engine with intake port timing shutters controlling the air mass flowing into the supercharger31 Mar 2026US 12,590,584 B2
- Cartridge style front cover and coupling cavity sleeve for automotive supercharger31 Mar 2026US 12,590,585 B2Eaton Intelligent Power Limited
- Fluidic turbo heater system10 Feb 2026US 12,546,273 B2Jetoptera, Inc.
- Propulsion assembly for a motor vehicle2 Dec 2025US 12,486,794 B2Ferrari S.P. A.
- Motorcycle-engine supercharger2 Sep 2025US 12,404,800 B1Gilby's Street Dept
- Turbocharger for road vehicles6 Aug 2026US 2026/0226912 A1Ferrari S.P. A.
- Air compressor for tire filling system4 Jun 2026US 2026/0153137 A1Deere & Company
- Fluidic turbo heater system21 May 2026US 2026/0139639 A1Jetoptera, Inc.
- All-Terrain Vehicle7 May 2026US 2026/0125132 A1Zhejiang CFMOTO Power Co., Ltd.
- All-Terrain Vehicle7 May 2026US 2026/0126024 A1Zhejiang CFMOTO Power Co., Ltd.
Most cited
By later US patents
- Multiple stage supercharging system131US 5,586,540 A1996
- Energy recovery system for large motor vehicles97US 5,121,607 A1992
- Differential driving supercharger and method for controlling the same60US 5,890,468 AKomatsu Ltd. · 1999
- Supercharger pulley isolator49US 5,893,355 AEaton Corporation · 1999
- Hybrid supercharged engine44US 6,343,473 B12002