F04B 9/1253
One side of the double-acting piston fluid motor being always under the
Official title: {one side of the double-acting piston fluid motor being always under the influence of the fluid under pressure}
F04B9/1253 (One side of the double-acting piston fluid motor being always under the) appears on 23 US grants and 9 published applications in this corpus.
Search patents in F04B- Granted patents
- 23
- Published applications
- 9
- Assignees
- 16
- Inventors
- 25
- Latest grant
- 5 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- Hydraulic unit with combined pneumatic/servomotor action and related use23 Dec 2021US 2021/0396249 A1Drausuisse Brasil Comercio E Locacao De Unidades Hidraulicas Inteligentes S.A.
- Drive mechanism, pump assembly and lubrication system22 Dec 2016US 2016/0369786 A1Osakeyhtiö SKF Aktiebolag
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Most cited
By later US patents
- Dispensing system for low stability fluids36US 4,116,364 ABinks Manufacturing Company · 1978
- Pumped fluid metering device for the precise feeding of a fluid36US 5,876,189 ALube Devices, Inc. · 1999
- Heat pump system30US 5,129,236 A1992
- Heat pump system22US 5,275,014 A1994
- Valve control system for air powered vacuum pump10US 4,102,609 AWood's Powr-Grip Co., Inc. · 1978