F04B 9/105
Reciprocating movement of the pumping member being obtained by a double-acting liquid
Official title: reciprocating movement of the pumping member being obtained by a double-acting liquid motor
F04B9/105 (Reciprocating movement of the pumping member being obtained by a double-acting liquid) appears on 165 US grants and 110 published applications in this corpus.
Search patents in F04B- Granted patents
- 165
- Published applications
- 110
- Assignees
- 108
- Inventors
- 262
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 4 |
| 2003 | 3 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 6 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 2 | 7 |
| 2009 | 2 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 5 | 5 |
| 2014 | 1 | 7 |
| 2015 | 5 | 7 |
| 2016 | 6 | 6 |
| 2017 | 2 | 7 |
| 2018 | 3 | 12 |
| 2019 | 10 | 4 |
| 2020 | 10 | 10 |
| 2021 | 7 | 6 |
| 2022 | 6 | 3 |
| 2023 | 5 | 2 |
| 2024 | 6 | 6 |
| 2025 | 4 | 5 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for reducing wear in a reciprocating piston pump11 Aug 2026US 12,704,135 B2Spotton Corp.
- Piston coupler for a reciprocating pump28 Apr 2026US 12,612,902 B2Wagner Spray Tech Corporation
- Proportional additive dosing pump with bidirectional rolling diaphragm17 Mar 2026US 12,577,946 B2Tefen Flow and Dosing Technologies LTD.
- Conveying device17 Feb 2026US 12,553,430 B2Hydac Technology GmbH
- Direct control variable displacement pump with dual-function high-pressure relief valve- pressure regulating valve26 Aug 2025US 12,398,682 B1Hamilton Sundstrand Corporation
- Proportional volumetric dosing device30 Jul 2026US 2026/0219086 A1Mixtron S.R.L.
- Direct control variable displacement pump with dual-function high-pressure relief valve-pressure regulating valve28 Aug 2025US 2025/0270961 A1Hamilton Sundstrand Corporation
- Proportional Additive Dosing Pump with Bidirectional Rolling Diaphragm24 Jul 2025US 2025/0237213 A1Tefen Flow and Dosing Technologies LTD.
- Systems and Methods for Reducing Wear in a Reciprocating Piston Pump12 Jun 2025US 2025/0188959 A1Spotton Corp.
- Piston limit sensing for fluid application27 Feb 2025US 2025/0067287 A1Wagner Spray Tech Corporation
Most cited
By later US patents
- Pump assembly228US 3,966,358 AMedac Gesellschaft FüR Klinische SpezialpräParate Mbh · 1976
- Multi-station semiconductor processor with volatilization138US 5,377,708 ASemitool, Inc. · 1995
- Semiconductor processor apparatus with dynamic wafer vapor treatment and particulate volatilization97US 5,235,995 ASemitool, Inc. · 1993
- Variable proportioner71US 4,572,229 ACrown Technology, Inc. · 1986
- Water-powered sump pump47US 6,527,518 B22003