F01B 11/001
In which the movement in the two directions is obtained by one
Official title: {in which the movement in the two directions is obtained by one double acting piston motor}
F01B11/001 (In which the movement in the two directions is obtained by one) appears on 91 US grants and 68 published applications in this corpus.
Search patents in F01B- Granted patents
- 91
- Published applications
- 68
- Assignees
- 39
- Inventors
- 123
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 7 |
| 2013 | 3 | 2 |
| 2014 | 4 | 3 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 7 | 12 |
| 2018 | 6 | 3 |
| 2019 | 5 | 3 |
| 2020 | 3 | 12 |
| 2021 | 3 | 3 |
| 2022 | 8 | 9 |
| 2023 | 6 | 3 |
| 2024 | 7 | 3 |
| 2025 | 2 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High-power core system25 Aug 2026US 12,719,334 B2Mainspring Energy, Inc.
- Integrated linear generator system17 Feb 2026US 12,556,063 B2Mainspring Energy, Inc.
- High-efficiency linear generator23 Sep 2025US 12,421,890 B2Mainspring Energy, Inc.
- Linear electrical machine1 Jul 2025US 12,348,115 B2Libertine FPE Ltd
- Compressed air driven motor10 Sep 2024US 12,084,974 B2Graco Minnesota Inc.
- Linear electrical machine16 Oct 2025US 2025/0323553 A1Libertine FPE Ltd
- Integrated linear generator system22 May 2025US 2025/0167632 A1Mainspring Energy, Inc.
- Integrated linear generator system23 Jan 2025US 2025/0030317 A1Mainspring Energy, Inc.
- High-power core system5 Sep 2024US 2024/0297553 A1Mainspring Energy, Inc.
- High-efficiency linear generator29 Aug 2024US 2024/0287930 A1Mainspring Energy, Inc.
Most cited
By later US patents
- Dual pressure gas motor, and method of operation29US 4,286,929 A1981
- Hydrodynamic spiral-grooved journal bearing for electromagnetically rotated and reciprocated compressor piston29US 4,799,421 AU. S. Philips Corporation · 1989
- Pneumatic cylinder apparatus17US 5,241,896 APHD, Inc. · 1993
- High-efficiency linear combustion engine16US 8,402,931 B2EtaGen, Inc. · 2013
- Method and an arrangement for controlling a linear motor13US 5,173,036 ASpeeder, A.S. · 1992