F16D 31/02
Fluid couplings or clutches with pumping sets of the volumetric type, i.e.
Official title: using pumps with pistons or plungers working in cylinders
F16D31/02 (Fluid couplings or clutches with pumping sets of the volumetric type, i.e.) appears on 252 US grants and 162 published applications in this corpus.
Search patents in F16D- Granted patents
- 252
- Published applications
- 162
- Assignees
- 82
- Inventors
- 309
- Latest grant
- 29 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 17 | 1 |
| 2002 | 18 | 11 |
| 2003 | 13 | 10 |
| 2004 | 9 | 16 |
| 2005 | 13 | 13 |
| 2006 | 23 | 21 |
| 2007 | 15 | 19 |
| 2008 | 20 | 14 |
| 2009 | 11 | 10 |
| 2010 | 9 | 6 |
| 2011 | 12 | 10 |
| 2012 | 7 | 4 |
| 2013 | 10 | 5 |
| 2014 | 9 | 3 |
| 2015 | 9 | 3 |
| 2016 | 6 | 2 |
| 2017 | 1 | 2 |
| 2018 | 3 | 0 |
| 2019 | 3 | 3 |
| 2020 | 4 | 4 |
| 2021 | 4 | 2 |
| 2022 | 3 | 3 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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Most cited
By later US patents
- Pump unit77US 6,425,244 B1Kanzaki Kokyukoki Mfg.Co., Ltd. · 2002
- Axle driving apparatus74US 6,125,630 ATuff Torq Corporation · 2000
- Cylinder block brake for a hydrostatic drive apparatus64US 7,134,276 B1Hydro-Gear Limited Partnership · 2006
- Multi-actuator pressure-based flow control system49US 7,260,931 B2Caterpillar Inc. · 2007
- Axle driving apparatus46US 6,619,038 B2Kanzaki Kokyukoki Mfg.Co., Ltd. · 2003