F16H 3/721
The secondary drive being an energy dissipating device
Official title: {the secondary drive being an energy dissipating device, e.g. regulating brake, in order to vary speed continuously}
F16H3/721 (The secondary drive being an energy dissipating device) appears on 139 US grants and 89 published applications in this corpus.
Search patents in F16H- Granted patents
- 139
- Published applications
- 89
- Assignees
- 66
- Inventors
- 226
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 6 | 4 |
| 2004 | 4 | 1 |
| 2005 | 0 | 3 |
| 2006 | 0 | 3 |
| 2007 | 1 | 3 |
| 2008 | 3 | 5 |
| 2009 | 2 | 3 |
| 2010 | 4 | 2 |
| 2011 | 0 | 1 |
| 2012 | 4 | 11 |
| 2013 | 2 | 5 |
| 2014 | 5 | 4 |
| 2015 | 10 | 8 |
| 2016 | 2 | 4 |
| 2017 | 0 | 3 |
| 2018 | 6 | 8 |
| 2019 | 3 | 4 |
| 2020 | 7 | 4 |
| 2021 | 3 | 3 |
| 2022 | 4 | 3 |
| 2023 | 5 | 1 |
| 2024 | 2 | 4 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Drive train assembly for driving a working unit with a fluctuating load18 Nov 2025US 12,471,536 B2Liebherr-Components Biberach GmbH
- Vehicle braking4 Mar 2025US 12,240,423 B2Zimeno Inc.
- Multi-mode aircraft power-split transmission system21 Jan 2025US 12,202,620 B2Textron Innovations Inc.
- Continuously variable transmission for electric vehicles12 Nov 2024US 12,140,210 B2The Royal Institute for the Advancement of Learning/McGill University
- Multi-mode aircraft power-split transmission system12 Mar 2024US 11,926,430 B1Textron Innovations Inc.
- Continuously variable transmission for electric vehicles8 Aug 2024US 2024/0263687 A1The Royal Institution for the Advancement of Learning/Mcgill University
- Multi-mode aircraft power-split transmission system13 Jun 2024US 2024/0190578 A1Textron Innovations Inc.
- Vehicle braking18 Apr 2024US 2024/0123951 A1Zimeno Inc.
- Drive train assembly for driving a working unit with a fluctuating load21 Mar 2024US 2024/0090382 A1Liebherr-Components Biberach GmbH
- Gearbox23 Feb 2023US 2023/0057520 A1
Most cited
By later US patents
- Power generating system73US 5,140,170 A1992
- Electrically biased starting reaction device for a power transmission38US 5,258,651 AGeneral Motors Corporation · 1993
- Automatic transmission for vehicles33US 6,537,169 B12003
- Control apparatus for a rotary body for cooling an engine32US 5,224,446 AMazda Motor Corporation · 1993
- Planetary gear system for controlling torque transfer in a vehicle driveline30US 6,663,527 B2Visteon Global Technologies, Inc. · 2003