F16H 15/32
In which the member b has a curved friction surface formed as
Official title: in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
F16H15/32 (In which the member b has a curved friction surface formed as) appears on 585 US grants and 343 published applications in this corpus.
Search patents in F16H- Granted patents
- 585
- Published applications
- 343
- Assignees
- 111
- Inventors
- 523
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 11 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 12 | 0 |
| 1991 | 13 | 0 |
| 1992 | 10 | 0 |
| 1993 | 17 | 0 |
| 1994 | 12 | 0 |
| 1995 | 11 | 0 |
| 1996 | 14 | 0 |
| 1997 | 11 | 0 |
| 1998 | 17 | 0 |
| 1999 | 21 | 0 |
| 2000 | 31 | 0 |
| 2001 | 34 | 17 |
| 2002 | 40 | 44 |
| 2003 | 43 | 48 |
| 2004 | 26 | 34 |
| 2005 | 28 | 16 |
| 2006 | 19 | 14 |
| 2007 | 12 | 9 |
| 2008 | 4 | 9 |
| 2009 | 13 | 7 |
| 2010 | 2 | 8 |
| 2011 | 5 | 10 |
| 2012 | 7 | 3 |
| 2013 | 6 | 19 |
| 2014 | 9 | 15 |
| 2015 | 6 | 12 |
| 2016 | 7 | 13 |
| 2017 | 8 | 13 |
| 2018 | 10 | 10 |
| 2019 | 19 | 13 |
| 2020 | 14 | 8 |
| 2021 | 12 | 4 |
| 2022 | 10 | 7 |
| 2023 | 3 | 5 |
| 2024 | 8 | 2 |
| 2025 | 3 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Drone propulsion system3 Jun 2025US 12,319,449 B2
- Toroidal continuously variable transmission18 Mar 2025US 12,253,142 B2Kawasaki Jukogyo Kabushiki Kaisha
- Toroidal continuously variable transmission25 Feb 2025US 12,234,891 B2Kawasaki Jukogyo Kabushiki Kaisha
- Toroidal continuously variable transmission10 Sep 2024US 12,085,150 B2Kawasaki Jukogyo Kabushiki Kaisha
- Synchronic drive10 Sep 2024US 12,085,151 B2Argent Automation Inc.
- Continuously variable transmission20 Aug 2026US 2026/0243337 A1Univance Corporation
- Synchronic drive16 Jul 2026US 2026/0201941 A1Argent Automation Inc.
- Toroidal continuously variable transmission9 Jul 2026US 2026/0194126 A1Kawasaki Jukogyo Kabushiki Kaisha
- Drone propulsion system29 Aug 2024US 2024/0286775 A1
- Synchronic drive20 Jun 2024US 2024/0200639 A1Argent Automation Inc.
Most cited
By later US patents
- Continuously-variable ratio transmission for an automobile vehicle270US 4,756,211 A1988
- Racing bicycle having a continuously variable traction drive249US 4,735,430 A1988
- Infinitely variable traction roller transmission244US 5,020,384 AExcelermatic Inc. · 1991
- Position servo systems234US 6,066,067 ATorotrak Limited · 2000
- Centrifugally controlled toroidal transmission232US 3,996,807 ACam Gears Limited · 1976