F03C 1/053
The pistons co-operating with an actuated element at the inner ends of
Official title: the pistons co-operating with an actuated element at the inner ends of the cylinders
F03C1/053 (The pistons co-operating with an actuated element at the inner ends of) appears on 34 US grants and 33 published applications in this corpus.
Search patents in F03C- Granted patents
- 34
- Published applications
- 33
- Assignees
- 25
- Inventors
- 76
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 4 |
| 2008 | 1 | 0 |
| 2009 | 3 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 3 |
| 2020 | 1 | 4 |
| 2021 | 3 | 2 |
| 2022 | 4 | 2 |
| 2023 | 3 | 4 |
| 2024 | 2 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid-pressure rotary actuator for clamping systems29 Sep 2026US 12,746,641 B2Rapid Design Solutions, LLC
- Electronically commutated hydraulic machine and operating method to reduce generation of resonance effects29 Jul 2025US 12,372,083 B2Artemis Intelligent Power Limited
- Radial piston hydraulic device distributing flow by pilot operated check valves and operating method thereof29 Oct 2024US 12,129,874 B2Huaqiao University
- Four-quadrant radial piston hydraulic device and working method thereof6 Aug 2024US 12,055,124 B1Huaqiao University
- Method and system for harnessing wind energy using a tethered airfoil21 Nov 2023US 11,821,500 B2New Leaf Management Ltd.
- Hydraulic machine6 Aug 2026US 2026/0226967 A1Danfoss Scotland Limited
- Free piston engine12 Feb 2026US 2026/0043344 A1
- Fluid-Pressure Rotary Actuator for Clamping Systems12 Jun 2025US 2025/0187146 A1Rapid Design Solutions, LLC
- Radial piston hydraulic device distributing flow by pilot operated check valves and operating method thereof27 Jul 2023US 2023/0235757 A1Huaqiao University
- Electronically commutated hydraulic machine and operating method to reduce generation of resonance effects20 Apr 2023US 2023/0118844 A1Artemis Intelligent Power Limited
Most cited
By later US patents
- Digital fluid stepping motor20US 4,503,751 AThe Boeing Company · 1985
- Radial piston and cylinder compressed gas motor18US 5,049,039 APneumotor, Inc. · 1991
- Hydraulic piston engine driven by a lubricant-free, water-based fluid16US 5,685,215 ADanfoss A/S · 1997
- Hydraulic circuit for supplying at least one hydraulic motor incorporating "disengageable" pistons15US 5,224,411 APoclain Hydraulics · 1993
- Hydraulic drive system13US 5,657,681 A1997