F16H 61/04
Smoothing ratio shift
F16H61/04 (Smoothing ratio shift) appears on 3,698 US grants and 2,429 published applications in this corpus.
Search patents in F16H- Granted patents
- 3,698
- Published applications
- 2,429
- Assignees
- 487
- Inventors
- 4,613
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 15 | 0 |
| 1978 | 14 | 0 |
| 1979 | 6 | 0 |
| 1980 | 16 | 0 |
| 1981 | 13 | 0 |
| 1982 | 23 | 0 |
| 1983 | 14 | 0 |
| 1984 | 19 | 0 |
| 1985 | 21 | 0 |
| 1986 | 30 | 0 |
| 1987 | 45 | 0 |
| 1988 | 36 | 0 |
| 1989 | 61 | 0 |
| 1990 | 58 | 0 |
| 1991 | 109 | 0 |
| 1992 | 113 | 0 |
| 1993 | 60 | 0 |
| 1994 | 66 | 0 |
| 1995 | 96 | 0 |
| 1996 | 81 | 0 |
| 1997 | 90 | 0 |
| 1998 | 106 | 0 |
| 1999 | 123 | 0 |
| 2000 | 104 | 0 |
| 2001 | 74 | 27 |
| 2002 | 79 | 116 |
| 2003 | 111 | 83 |
| 2004 | 85 | 113 |
| 2005 | 79 | 95 |
| 2006 | 85 | 70 |
| 2007 | 57 | 93 |
| 2008 | 67 | 115 |
| 2009 | 66 | 116 |
| 2010 | 84 | 117 |
| 2011 | 75 | 101 |
| 2012 | 122 | 89 |
| 2013 | 117 | 97 |
| 2014 | 144 | 126 |
| 2015 | 140 | 132 |
| 2016 | 106 | 114 |
| 2017 | 99 | 99 |
| 2018 | 85 | 146 |
| 2019 | 135 | 100 |
| 2020 | 121 | 116 |
| 2021 | 100 | 75 |
| 2022 | 84 | 75 |
| 2023 | 83 | 73 |
| 2024 | 76 | 61 |
| 2025 | 62 | 44 |
| 2026 | 33 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16H 61/06By controlling rate of change of fluid pressure1,559
- F16H 61/0403Synchronisation before shifting866
- F16H 61/0437By using electrical signals713
- F16H 61/08Timing control537
- F16H 2061/0444During fast shifting over two gearstepsIndexing code229
- F16H 2061/0425Bridging torque interruptionIndexing code225
- F16H 2061/0488During range shift from neutral to driveIndexing code203
- F16H 2061/047By preventing or solving a tooth butt situation upon engagement failure dueIndexing code168
All 20 subgroupsShow fewer
- F16H 2061/0474By smoothing engagement or release of positive clutchesIndexing code159
- F16H 2061/0485During range shift from neutral to reverseIndexing code116
- F16H 2061/0477By suppression of excessive engine flare or turbine racing during shift transitionIndexing code102
- F16H 2061/0451During swap-shifts, i.e. gear shifts between different planetary unitsIndexing code98
- F16H 2061/0496For low engine torqueIndexing code84
- F16H 2061/044When a freewheel device is disengaged or bridgedIndexing code81
- F16H 2061/0462By controlling slip rate during gear shift transitionIndexing code66
- F16H 2061/0466Smoothing shift shock by apply or release of band brake servosIndexing code55
- F16H 2061/0481During range shift from drive or reverse to neutralIndexing code54
- F16H 2061/0492For high engine torqueIndexing code47
- F16H 2061/0455During shifts involving three or more shift membersIndexing code44
- F16H 2061/0459Using map for shift parametersIndexing code29
Recent patents
- Methods and system for wheel torque control coordination for electric vehicle6 Oct 2026US 12,752,638 B1Ford Global Technologies, LLC
- Method for operating drive assembly, drive assembly, and work machine6 Oct 2026US 12,753,834 B2Deere & Company
- Driving device with a parking lock arrangement and drivable vehicle axle with a driving device29 Sep 2026US 12,747,786 B2ZF Friedrichshafen AG
- Electric machine shift and engine start coordination8 Sep 2026US 12,728,834 B2Fca US LLC
- Method and device for actuating a dog clutch of a gearbox of an electrically driveable vehicle8 Sep 2026US 12,729,765 B2ZF CV Systems Global GmbH
- Vehicle comprising a transmission8 Oct 2026US 2026/0309225 A1
- Agricultural work vehicle17 Sep 2026US 2026/0276080 A1Ls Mtron Ltd.
- System and method for shifting two speed transmission17 Sep 2026US 2026/0276082 A1Dana Italia S.R.L.
- Motorcycle3 Sep 2026US 2026/0257745 A1Bayerische Motoren Werke Aktiengesellschaft
- Two-speed transmission, method for learning µ-v characteristic of two-speed transmission, and transmission control for two-speed transmission3 Sep 2026US 2026/0258860 A1Nsk Ltd.
Most cited
By later US patents
- Mechanical automatic transmission284US 4,361,060 A1982
- Vehicle transmission system with variable speed drive235US 5,508,574 A1996
- Electronically-controlled, adaptive automatic transmission system166US 4,875,391 AChrysler Motors Corporation · 1989
- Double-clutch transmission134US 6,634,247 B2LuK Lamellen und Kupplungsbau Beteiligungs KG · 2003
- Continuously variable transmission apparatus123US 6,932,739 B2Nsk Ltd. · 2005