F04B 9/1176
The movement of each piston in one direction being obtained by a
Official title: {the movement of each piston in one direction being obtained by a single-acting piston liquid motor}
F04B9/1176 (The movement of each piston in one direction being obtained by a) appears on 89 US grants and 55 published applications in this corpus.
Search patents in F04B- Granted patents
- 89
- Published applications
- 55
- Assignees
- 62
- Inventors
- 179
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 0 |
| 2003 | 3 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 3 |
| 2006 | 0 | 3 |
| 2007 | 3 | 4 |
| 2008 | 1 | 1 |
| 2009 | 4 | 3 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 1 | 8 |
| 2016 | 2 | 2 |
| 2017 | 5 | 3 |
| 2018 | 4 | 3 |
| 2019 | 2 | 3 |
| 2020 | 3 | 3 |
| 2021 | 1 | 3 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 3 | 1 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Drive system for a positive displacement pump18 Mar 2025US 12,253,071 B2Graco Minnesota Inc.
- Compressor device and compression method24 Sep 2024US 12,098,711 B2Sera Corporation Inc.
- Mobile thick matter pump26 Mar 2024US 11,939,967 B2Schwing GmbH
- Drive system for a positive displacement pump9 Jan 2024US 11,867,165 B2Graco Minnesota Inc.
- Pump system for handling a slurry medium18 Apr 2023US 11,629,707 B2Weir Minerals Netherlands B.V.
- Pressure medium powered device generating reciprocating motion3 Jul 2025US 2025/0215850 A1Dynaset Oy
- Drive system for a positive displacement pump26 Jun 2025US 2025/0207575 A1Graco Minnesota Inc.
- Drive system for a positive displacement pump18 Apr 2024US 2024/0125313 A1Graco Minnesota Inc.
- Method for Operating a High-Density Solids Pump and High-Density Solids Pump26 Jan 2023US 2023/0026231 A1Putzmeister Engineering GmbH
- Energy efficiency increasing system for hydraulic devices30 Jun 2022US 2022/0205462 A1
Most cited
By later US patents
- Quadraplex fluid pump268US 4,470,771 ATowler Hydraulics, Inc. · 1984
- Variable-volume storage and dispensing apparatus for compressed natural gas129US 5,454,408 AThermo Power Corporation · 1995
- Method and apparatus for pressurizing fluids106US 5,879,137 AJetec Company · 1999
- Method and apparatus for compressing gases with a liquid system96US 5,169,295 ATren Fuels, Inc. · 1992
- Method and apparatus for compressing gases with a liquid system70US 5,387,089 ATren Fuels, Inc. · 1995