F04B 1/303
By turning the valve plate
Official title: by turning the valve plate
F04B1/303 (By turning the valve plate) appears on 30 US grants and 28 published applications in this corpus.
Search patents in F04B- Granted patents
- 30
- Published applications
- 28
- Assignees
- 19
- Inventors
- 62
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 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 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 7 |
| 2017 | 4 | 4 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 2 | 2 |
| 2021 | 3 | 2 |
| 2022 | 1 | 3 |
| 2023 | 1 | 0 |
| 2024 | 2 | 4 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control plate of a hydraulic machine and hydraulic machine3 Feb 2026US 12,540,604 B2Danfoss A/S
- Valve plate with notch arrangement for fluid pump29 Jul 2025US 12,372,075 B2Danfoss Power Solutions II Technology A/S
- Hydraulic pump motor1 Oct 2024US 12,104,569 B2Komatsu Ltd.
- Adjustable distribution plate for an axial piston assembly17 Sep 2024US 12,092,070 B1Dana Motion Systems Italia S.R.L.
- Hydrostatic axial piston machine4 Apr 2023US 11,619,203 B2Robert Bosch GmbH
- Control System of Work Machine19 Mar 2026US 2026/0078567 A1Hitachi Construction Machinery Co., Ltd.
- Adjustable distribution plate for an axial piston assembly10 Oct 2024US 2024/0337236 A1Dana Motion Systems Italia S.R.L.
- Axial piston hydraulic machine having a self-adjusting swash plate3 Oct 2024US 2024/0328404 A1Dana Motion Systems Italia S.R.L.
- Control plate of a hydraulic machine and hydraulic machine30 May 2024US 2024/0175429 A1Danfoss A/S
- Sealing assembly and hydraulic piston pump / motor18 Apr 2024US 2024/0125310 A1Dana Motion Systems Italia S.R.L.
Most cited
By later US patents
- Pressure transformer23US 6,116,138 AInnas Free Piston B.V. · 2000
- Hydraulic installations14US 6,575,076 B1Innas Free Piston B.V. · 2003
- Displacement control for a variable displacement axial piston pump10US 5,564,905 ACaterpillar Inc. · 1996
- Apparatus for executing activities assisted by hydromotors and a hydraulic transformer for use in such an apparatus8US 7,028,470 B1Innas Free Piston B.V. · 2006
- Controlled porting for a pressure transformer7US 5,878,649 ACaterpillar Inc. · 1999