F02G 2275/20
Controls: for preventing piston over stroke
Official title: for preventing piston over stroke
F02G2275/20 (Controls: for preventing piston over stroke) appears on 34 US grants and 34 published applications in this corpus.
Search patents in F02G- Granted patents
- 34
- Published applications
- 34
- Assignees
- 16
- Inventors
- 56
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 4 |
| 2009 | 1 | 0 |
| 2010 | 2 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 3 | 9 |
| 2021 | 6 | 3 |
| 2022 | 3 | 4 |
| 2023 | 3 | 2 |
| 2024 | 3 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Free-piston Stirling engine7 Oct 2025US 12,435,911 B2Twinbird Corporation
- Engine apparatus and method for operation29 Oct 2024US 12,129,812 B2Hyliion Holdings Corp.
- Constant density heat exchanger and system for energy conversion7 May 2024US 11,976,610 B2Hyliion Holdings Corp.
- Monolithic heat-exchanger bodies30 Jan 2024US 11,885,279 B2Hyliion Holdings Corp.
- Energy conversion apparatus29 Aug 2023US 11,739,711 B2Hyliion Holdings Corp.
- Free-piston stirling engine14 Nov 2024US 2024/0376850 A1Twinbird Corporation
- Monolithic heat-exchanger bodies16 May 2024US 2024/0159201 A1Hyliion Holdings Corp.
- Constant density heat exchanger and system for energy conversion20 Jul 2023US 2023/0228229 A1General Electric Company
- Energy conversion apparatus19 Jan 2023US 2023/0019495 A1General Electric Company
- Monolithic heat-exchanger bodies15 Sep 2022US 2022/0290630 A1General Electric Company
Most cited
By later US patents
- Double acting thermodynamically resonant free-piston multicylinder stirling system and method78US 7,134,279 B2Infinia Corporation · 2006
- Stirling cycle generator control system and method for regulating displacement amplitude of moving members48US 6,050,092 AStirling Technology Company · 2000
- Control system and method for preventing destructive collisions in free piston machines36US 6,536,326 B2SunPower Corporation · 2003
- Free piston end position limiter30US 5,537,820 ASunPower Corporation · 1996
- Self-starting, free piston Stirling engine20US 4,036,018 A1977