F16D 57/04
Liquid-resistance brakes: with blades causing a directed flow
Official title: with blades causing a directed flow, e.g. Föttinger type
F16D57/04 (Liquid-resistance brakes: with blades causing a directed flow) appears on 135 US grants and 101 published applications in this corpus.
Search patents in F16D- Granted patents
- 135
- Published applications
- 101
- Assignees
- 55
- Inventors
- 255
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 6 |
| 2004 | 2 | 2 |
| 2005 | 3 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 5 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 3 | 6 |
| 2011 | 0 | 3 |
| 2012 | 1 | 3 |
| 2013 | 3 | 4 |
| 2014 | 4 | 9 |
| 2015 | 1 | 6 |
| 2016 | 5 | 14 |
| 2017 | 5 | 3 |
| 2018 | 6 | 1 |
| 2019 | 1 | 3 |
| 2020 | 4 | 6 |
| 2021 | 1 | 8 |
| 2022 | 3 | 3 |
| 2023 | 6 | 3 |
| 2024 | 4 | 5 |
| 2025 | 3 | 5 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Mechanical liquid vaporizing waterbrake73US 5,279,262 A1994
- Hydrodynamic working circuit with device for reducing air circulation losses26US 4,773,513 AJ. M. Voith GmbH · 1988
- Mechanically adjustable dual pocket hydromatic brake24US 4,043,434 AParmac, Inc. · 1977
- Engine overspeed control of retarder23US 3,931,870 AGeneral Motors Corporation · 1976
- Hydrodynamic brake system23US 3,989,127 AJ. M. Voith GmbH · 1976