F16D 13/38
With flat clutching surfaces
Official title: with flat clutching surfaces, e.g. discs
F16D13/38 (With flat clutching surfaces) appears on 1,349 US grants and 1,254 published applications in this corpus.
Search patents in F16D- Granted patents
- 1,349
- Published applications
- 1,254
- Assignees
- 362
- Inventors
- 2,297
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 11 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 9 | 0 |
| 1985 | 9 | 0 |
| 1986 | 16 | 0 |
| 1987 | 11 | 0 |
| 1988 | 7 | 0 |
| 1989 | 15 | 0 |
| 1990 | 13 | 0 |
| 1991 | 11 | 0 |
| 1992 | 19 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 7 | 0 |
| 1998 | 16 | 0 |
| 1999 | 21 | 0 |
| 2000 | 23 | 0 |
| 2001 | 8 | 4 |
| 2002 | 14 | 11 |
| 2003 | 9 | 15 |
| 2004 | 10 | 21 |
| 2005 | 11 | 12 |
| 2006 | 14 | 14 |
| 2007 | 9 | 27 |
| 2008 | 7 | 19 |
| 2009 | 5 | 26 |
| 2010 | 16 | 23 |
| 2011 | 17 | 22 |
| 2012 | 24 | 16 |
| 2013 | 29 | 38 |
| 2014 | 23 | 63 |
| 2015 | 62 | 67 |
| 2016 | 46 | 82 |
| 2017 | 72 | 195 |
| 2018 | 97 | 132 |
| 2019 | 139 | 95 |
| 2020 | 126 | 96 |
| 2021 | 95 | 77 |
| 2022 | 84 | 65 |
| 2023 | 69 | 53 |
| 2024 | 60 | 31 |
| 2025 | 22 | 24 |
| 2026 | 18 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16D 13/52Clutches with multiple lamellae923
- F16D 13/46In which two axially-movable members, of which one is attached to the171
- F16D 13/385Double clutches, i.e. comprising two friction disc mounted on one driven shaft170
- F16D 13/40In which the or each axially-movable member is pressed exclusively against an96
Recent patents
- Clutch apparatus and motorcycle22 Sep 2026US 12,742,480 B2Kabushiki Kaisha F.C.C.
- Clutch apparatus15 Sep 2026US 12,736,093 B2Kabushiki Kaisha F.C.C.
- Clutch device4 Aug 2026US 12,698,809 B2Kabushiki Kaisha F.C.C.
- Clutch apparatus28 Jul 2026US 12,692,908 B2Kabushiki Kaisha F.C.C.
- Clutch device28 Jul 2026US 12,692,909 B2Kabushiki Kaisha F.C.C.
- Double clutch arrangement, drive train and work machine24 Sep 2026US 2026/0287026 A1Deere & Company
- Clutch control device20 Aug 2026US 2026/0243315 A1Honda Motor Co., Ltd.
- Clutch apparatus and motorcycle30 Jul 2026US 2026/0218758 A1Kabushiki Kaisha F.C.C.
- Fastening structure of clutch actuator30 Jul 2026US 2026/0218759 A1Honda Motor Co., Ltd.
- Friction disc, multiplate clutch, transmission, and work machine23 Jul 2026US 2026/0210412 A1Komatsu Ltd.
Most cited
By later US patents
- Multi-speed transmission and backing plate85US 8,821,336 B2GM Global Technology Operations LLC · 2014
- Drive arrangement for a hybrid vehicle61US 5,755,302 AFichtel & Sachs AG · 1998
- Manual/automatic pressure control mechanism for centrifugal clutch53US 7,014,026 B2Drussel Wilfley Design, LLC · 2006
- Clutch assembly for use with an internal combustion engine45US 4,220,233 AAisin Seiki Kabushiki Kaisha · 1980
- Plate separator43US 4,548,306 AGeneral Motors Corporation · 1985