F16D 37/008
The particles being carried by a fluid, to vary viscosity when subjected
Official title: {the particles being carried by a fluid, to vary viscosity when subjected to electric change, i.e. electro-rheological or smart fluids (composition of such fluids C10M171/001)}
F16D37/008 (The particles being carried by a fluid, to vary viscosity when subjected) appears on 81 US grants and 63 published applications in this corpus.
Search patents in F16D- Granted patents
- 81
- Published applications
- 63
- Assignees
- 63
- Inventors
- 164
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 3 |
| 2003 | 3 | 2 |
| 2004 | 1 | 1 |
| 2005 | 2 | 4 |
| 2006 | 1 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 2 |
| 2010 | 0 | 1 |
| 2011 | 2 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 4 |
| 2014 | 0 | 1 |
| 2015 | 3 | 7 |
| 2016 | 2 | 3 |
| 2017 | 4 | 0 |
| 2018 | 3 | 7 |
| 2019 | 4 | 4 |
| 2020 | 8 | 7 |
| 2021 | 5 | 4 |
| 2022 | 7 | 2 |
| 2023 | 2 | 2 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetorheological (MR) clutches for hybrid drivetrain power distribution21 Oct 2025US 12,448,143 B2Textron Innovations Inc.
- Clutch system with phase changing materials9 Apr 2024US 11,953,061 B2The Johns Hopkins University
- Human-hybrid powertrain for a vehicle or moving equipment using magnetorheological fluid clutch apparatus23 Jan 2024US 11,878,767 B2Exonetik Inc.
- High-stability and large-torque magnetorheological fluid clutch23 Jan 2024US 11,879,507 B2Zhejiang Normal University
- Combined isolation and torsional vibration damping device22 Aug 2023US 11,732,774 B2Litens Automotive Partnership
- Proprioceptive actuator using magnetorheological fluid clutch apparatus14 May 2026US 2026/0131454 A1Exonetik Inc.
- Magnetorheological (mr) clutches for hybrid drivetrain power distribution12 Feb 2026US 2026/0042545 A1Textron Innovations Inc.
- Tapered adapter for rotatable assembly and associated method19 Jun 2025US 2025/0198465 A1Horton, Inc.
- Magnetorheological (MR) Clutches for Hybrid Drivetrain Power Distribution14 Nov 2024US 2024/0375783 A1Textron Innovations Inc.
- High-stability and large-torque magnetorheological fluid clutch24 Aug 2023US 2023/0265898 A1Zhejiang Normal University
Most cited
By later US patents
- Pump drivetrain damper system and control systems and methods for same206US 10,316,832 B2S,P.M. Flow Control, Inc. · 2019
- Electrorheological fluid force transmission and conversion device122US 4,896,754 ALord Corporation · 1990
- Electroactive fluid torque transmission apparatus with ferrofluid seal73US 5,007,513 ALord Corporation · 1991
- Magneto-rheological fluid coupling58US 5,967,273 AEaton Corporation · 1999
- Viscous shear clutch48US 4,444,298 AThe Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland · 1984