F04B 9/1376
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 fluid motor}
F04B9/1376 (The movement of each piston in one direction being obtained by a) appears on 15 US grants and 13 published applications in this corpus.
Search patents in F04B- Granted patents
- 15
- Published applications
- 13
- Assignees
- 10
- Inventors
- 20
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 4 |
| 2016 | 0 | 1 |
| 2017 | 4 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
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.
- Drive system for a positive displacement pump9 Jan 2024US 11,867,165 B2Graco Minnesota Inc.
- Mechanical drive system for a pulseless positive displacement pump25 Dec 2018US 10,161,393 B2Graco Minnesota Inc.
- Method of pulselessly displacing fluid11 Sep 2018US 10,072,650 B2Graco Minnesota Inc.
- Electric drive system for a pulseless positive displacement pump10 Oct 2017US 9,784,265 B2Graco Minnesota Inc.
- 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.
- Pressure boost system16 Jun 2022US 2022/0186679 A1Eaton Intelligent Power Limited
- Drive system for a positive displacement pump7 Oct 2021US 2021/0310475 A1Graco Minnesota Inc.
- Drive system for a positive displacement pump28 Mar 2019US 2019/0093651 A1Graco Minnesota Inc.
Most cited
By later US patents
- Reciprocating infusion pump and directional adapter set for use therewith80US 4,065,230 AHart Associates, Inc. · 1977
- Pulseless positive displacement pump and method of pulselessly displacing fluid14US 9,638,185 B2Graco Minnesota Inc. · 2017
- Pump unit with adjustable piston stroke length11US 5,024,584 ATetra Dev-Co · 1991
- Mechanical drive system for a pulseless positive displacement pump10US 10,161,393 B2Graco Minnesota Inc. · 2018
- Fluid pressure actuated motor with pneumatically-coupled pistons10US 4,552,101 AOutboard Marine Corporation · 1985