F04B 1/18
Having self-acting distribution members, i.e. actuated by working fluid
Official title: having self-acting distribution members, i.e. actuated by working fluid
F04B1/18 (Having self-acting distribution members, i.e. actuated by working fluid) appears on 71 US grants and 61 published applications in this corpus.
Search patents in F04B- Granted patents
- 71
- Published applications
- 61
- Assignees
- 49
- Inventors
- 138
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 4 |
| 2018 | 2 | 4 |
| 2019 | 5 | 8 |
| 2020 | 4 | 2 |
| 2021 | 2 | 4 |
| 2022 | 6 | 4 |
| 2023 | 3 | 7 |
| 2024 | 7 | 6 |
| 2025 | 7 | 6 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotary swash plate hydraulic pump15 Sep 2026US 12,736,037 B2Kawasaki Jukogyo Kabushiki Kaisha
- Axial pump with inclined plate16 Jun 2026US 12,655,842 B2Mixtron S.R.L.
- Rotary swash plate hydraulic pump19 May 2026US 12,631,165 B2Kawasaki Jukogyo Kabushiki Kaisha
- Rotary swash plate hydraulic pump24 Mar 2026US 12,584,467 B2Kawasaki Jukogyo Kabushiki Kaisha
- Piston pump having plastic material inlet valve insert part for a high pressure cleaning device3 Mar 2026US 12,565,888 B2Alfred Kärcher GmbH & Co. KG
- Active checked multiple displacer assembly1 Oct 2026US 2026/0298217 A1Graco Minnesota Inc.
- Piston pump of the type having at least three pumping chambers23 Jul 2026US 2026/0210343 A1Mixtron S.R.L.
- Control plate for a hydraulic machine29 Jan 2026US 2026/0028970 A1
- Rotary swash plate hydraulic pump1 Jan 2026US 2026/0002525 A1Kawasaki Jukogyo Kabushiki Kaisha
- Piston assembly for hydraulic pump13 Nov 2025US 2025/0347276 A1Goodrich Actuation Systems Limited
Most cited
By later US patents
- Fluid end assembly57US 10,962,001 B2Kerr Machine Co. · 2021
- Fluid end assembly46US 10,670,013 B2Kerr Machine Co. · 2020
- Control system for a multi-piston pump with solenoid valves for the production of constant outlet pressure flow29US 5,456,581 AThe United States of America as represented by the Secretary of the Navy · 1995
- High pressure pumps having a check valve keeper and associated systems and methods14US 10,808,688 B1OMAX Corporation · 2020
- Variable displacement piston pump14US 4,149,830 AThe Bendix Corporation · 1979