F04B 1/1071
With rotary cylinder blocks
Official title: with rotary cylinder blocks
F04B1/1071 (With rotary cylinder blocks) appears on 118 US grants and 61 published applications in this corpus.
Search patents in F04B- Granted patents
- 118
- Published applications
- 61
- Assignees
- 62
- Inventors
- 191
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 5 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 2 | 1 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 1 |
| 2013 | 0 | 5 |
| 2014 | 0 | 0 |
| 2015 | 2 | 4 |
| 2016 | 4 | 4 |
| 2017 | 1 | 0 |
| 2018 | 2 | 5 |
| 2019 | 1 | 2 |
| 2020 | 3 | 0 |
| 2021 | 2 | 3 |
| 2022 | 3 | 7 |
| 2023 | 3 | 3 |
| 2024 | 2 | 4 |
| 2025 | 4 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrostatic radial piston unit26 May 2026US 12,638,057 B2Danfoss A/S
- Radial piston pumps3 Mar 2026US 12,565,878 B2Domin Fluid Power Limited
- Hydrostatic radial piston unit13 Jan 2026US 12,523,201 B2Danfoss A/S
- Pump unit with conical motor chamber25 Nov 2025US 12,480,484 B2Power Packer North America, Inc.
- Ball piston pump26 Aug 2025US 12,398,706 B2GHSP, Inc.
- Improved pressure adapter for hydraulic system8 Oct 2026US 2026/0309122 A1Poclain Hydraulics Industrie
- Improved multi-cylinder hydraulic machine8 Oct 2026US 2026/0309134 A1Poclain Hydraulics Industrie
- Hydraulic machine comprising a dog brake18 Dec 2025US 2025/0382939 A1
- Fabrication of nanotube bundles and reactors for the same27 Nov 2025US 2025/0361856 A1
- Hydraulic machine provided with a direction changing drawer23 Oct 2025US 2025/0327437 A1
Most cited
By later US patents
- Hydraulic pump driven by an electric motor56US 5,360,322 AAlfred Teves GmbH · 1994
- Rotary hydrostatic radial piston machines44US 4,686,829 AUnipat AG · 1987
- Motor driven hydraulic tool with variable displacement hydraulic pump27US 5,477,680 ABurndy Corporation · 1995
- Radial piston motor or pump22US 5,391,059 AH T C A/S · 1995
- Self-contained hydraulic actuator system20US 7,640,736 B2Ashradan Holdings Ltd. · 2010