F04B 1/113
With actuating or actuated elements at the inner ends of the cylinders
Official title: with actuating or actuated elements at the inner ends of the cylinders
F04B1/113 (With actuating or actuated elements at the inner ends of the cylinders) appears on 34 US grants and 14 published applications in this corpus.
Search patents in F04B- Granted patents
- 34
- Published applications
- 14
- Assignees
- 27
- Inventors
- 38
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Radial piston pumps3 Mar 2026US 12,565,878 B2Domin Fluid Power Limited
- Oil pump for gas turbine engine and associated method of pumping oil1 Apr 2025US 12,264,658 B2Pratt & Whitney Canada Corp.
- System for a bent axis motor13 Feb 2024US 11,898,582 B1Dana Motion Systems Italia S.R.L.
- Hydraulic apparatus having an additional thrust section7 Jan 2020US 10,527,022 B2Poclain Hydraulics Industrie
- Spin pump with spun-epicyclic geometry having piston bores capped with caps including ducts or valves within the rotor5 Nov 2019US 10,465,669 B2Chart Inc.
- Oil pump for gas turbine engine and associated method of pumping oil24 Oct 2024US 2024/0352890 A1Pratt & Whitney Canada Corp.
- Radial piston rotary machine15 Aug 2024US 2024/0271624 A1Up-Steel, S.R.O.
- Radial piston pumps27 Jun 2024US 2024/0209854 A1Domin Fluid Power Limited
- Radial rotary piston machine21 Sep 2023US 2023/0296088 A1Up-Steel, S.R.O.
- Spin pump with spun-epicyclic geometry15 Mar 2018US 2018/0073493 A1Chart Inc.
Most cited
By later US patents
- Radial piston machine21US 3,945,766 ARheinische Chamotte - und Dinas Werke · 1976
- Positive displacement pumps18US 5,228,840 AImpact MST Incorporated · 1993
- Two rotor sliding vane compressor16US 5,567,139 A1996
- Rotary piston machines with a wear-resistant driving mechanism15US 5,249,506 A1993
- Two rotor sliding vane compressor15US 5,681,153 ACarrier Corporation · 1997