F16D 57/00
Liquid-resistance brakes
Official title: Liquid-resistance brakes; {Brakes using the internal friction of fluids or fluid-like media, e.g. powders (for braking drums, barrels or ropes of cranes, lift hoists or winches B66D5/026)}
F16D57/00 (Liquid-resistance brakes) appears on 427 US grants and 353 published applications in this corpus.
Search patents in F16D- Granted patents
- 427
- Published applications
- 353
- Assignees
- 222
- Inventors
- 754
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 8 | 0 |
| 1978 | 11 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 13 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 3 |
| 2002 | 3 | 10 |
| 2003 | 7 | 13 |
| 2004 | 8 | 10 |
| 2005 | 9 | 7 |
| 2006 | 2 | 5 |
| 2007 | 5 | 11 |
| 2008 | 3 | 6 |
| 2009 | 3 | 4 |
| 2010 | 3 | 10 |
| 2011 | 4 | 7 |
| 2012 | 6 | 5 |
| 2013 | 8 | 14 |
| 2014 | 8 | 14 |
| 2015 | 11 | 21 |
| 2016 | 13 | 28 |
| 2017 | 13 | 13 |
| 2018 | 14 | 16 |
| 2019 | 15 | 19 |
| 2020 | 23 | 30 |
| 2021 | 21 | 22 |
| 2022 | 15 | 15 |
| 2023 | 15 | 28 |
| 2024 | 15 | 17 |
| 2025 | 17 | 13 |
| 2026 | 11 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16D 57/002Comprising a medium with electrically or magnetically controlled internal friction135
- F16D 57/04Liquid-resistance brakes: with blades causing a directed flow135
- F16D 57/06Comprising a pump circulating fluid, braking being effected by throttling of the75
- F16D 57/02Liquid-resistance brakes: with blades or like members braked by the fluid43
- F16D 57/005Details of blades28
- F16D 57/007Liquid-resistance brakes: with variable brake geometry11
Recent patents
- Technologies for variable retarder control11 Aug 2026US 12,704,136 B2Allison Transmission, Inc.
- Sealing system11 Aug 2026US 12,704,181 B2Driventic GmbH
- Implement braking system4 Aug 2026US 12,698,786 B2Doosan Bobcat North America, Inc.
- Training device and training system21 Jul 2026US 12,685,901 B2Kabushiki Kaisha Atsumitec
- Brake system with application in the automotive sector which does not generate polluting waste7 Jul 2026US 12,674,495 B2
- Tape measure reatraction decelerator27 Aug 2026US 2026/0251431 A1Stanley Black & Decker MEA FZE
- Measuring tape for protecting end hook27 Aug 2026US 2026/0251432 A1Komelon Corporation
- Grinding belt unit for double-sided sheet metal processing6 Aug 2026US 2026/0225203 A1ARKU Maschinenbau GmbH
- Vehicle driving simulator30 Jul 2026US 2026/0221049 A1
- Braking system for a vehicle and a wheel brake device16 Jul 2026US 2026/0200444 A1Mercedes-Benz Group AG
Most cited
By later US patents
- Variable resistance exercise device236US 6,027,429 ANordicTrack, Inc. · 2000
- Pump drivetrain damper system and control systems and methods for same206US 10,316,832 B2S,P.M. Flow Control, Inc. · 2019
- Variable resistance exercise device180US 5,409,435 A1995
- Variable resistance exercise device137US 5,762,584 ANordicTrack, Inc. · 1998
- Electrorheological fluid force transmission and conversion device122US 4,896,754 ALord Corporation · 1990