F04B 9/107
Rectilinear movement of the pumping member in the working direction being obtained
Official title: rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
F04B9/107 (Rectilinear movement of the pumping member in the working direction being obtained) appears on 127 US grants and 88 published applications in this corpus.
Search patents in F04B- Granted patents
- 127
- Published applications
- 88
- Assignees
- 80
- Inventors
- 208
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 2 |
| 2004 | 3 | 5 |
| 2005 | 0 | 5 |
| 2006 | 0 | 0 |
| 2007 | 2 | 5 |
| 2008 | 2 | 4 |
| 2009 | 1 | 5 |
| 2010 | 3 | 5 |
| 2011 | 7 | 2 |
| 2012 | 4 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 4 |
| 2015 | 1 | 5 |
| 2016 | 1 | 3 |
| 2017 | 3 | 12 |
| 2018 | 8 | 4 |
| 2019 | 1 | 7 |
| 2020 | 8 | 4 |
| 2021 | 7 | 2 |
| 2022 | 1 | 2 |
| 2023 | 4 | 2 |
| 2024 | 1 | 2 |
| 2025 | 3 | 3 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Fluid circuit7 Oct 2025US 12,435,738 B2Eagle Industry Co., Ltd.
- Hydraulic pumping system29 Jul 2025US 12,372,080 B2
- Apparatus and system for gas compression and the method for compression of a gas14 Jan 2025US 12,196,374 B2Gas Technologies LLC
- Self-powered downhole injection systems and methods for operating the same6 Aug 2024US 12,055,020 B2Saudi Arabian Oil Company
- Method for operating a piston compressor, and piston compressor28 Nov 2023US 11,828,281 B2Linde Aktiengesellschaft
- Cryogenic pump with designed leakby for hydrogen fueling station16 Oct 2025US 2025/0320855 A1Bosch Rexroth AG
- Hydraulic unit for mechanical pumping (hump) for oil lifting3 Jul 2025US 2025/0215771 A1
- Fluid circuit1 May 2025US 2025/0137468 A1Eagle Industry Co., Ltd.
- Hydraulic pumping system8 Feb 2024US 2024/0044326 A1
- Self-powered downhole injection systems and methods for operating the same4 Jan 2024US 2024/0003233 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Method and apparatus for compressing a gas to a high pressure48US 7,527,482 B2Westport Power Inc. · 2009
- Pressure intensifier47US 7,354,252 B2miniBOOSTER HYDRAULICS A/S · 2008
- High pressure gas compressor38US 5,807,083 A1998
- Pumping system using solar energy37US 3,937,599 AAgence Nationale de Valorisation de la Recherche (ANVAR) · 1976
- Fluid activated pump having variable discharge37US 4,309,156 AThe Perkin-Elmer Corporation · 1982