F01C 1/3446
The inner and outer member being in contact along more than one
Official title: {the inner and outer member being in contact along more than one line or surface}
F01C1/3446 (The inner and outer member being in contact along more than one) appears on 112 US grants and 73 published applications in this corpus.
Search patents in F01C- Granted patents
- 112
- Published applications
- 73
- Assignees
- 50
- Inventors
- 162
- Latest grant
- 6 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 0 |
| 2003 | 5 | 4 |
| 2004 | 8 | 13 |
| 2005 | 7 | 12 |
| 2006 | 6 | 3 |
| 2007 | 1 | 1 |
| 2008 | 2 | 3 |
| 2009 | 4 | 1 |
| 2010 | 3 | 2 |
| 2011 | 2 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 5 |
| 2014 | 5 | 5 |
| 2015 | 1 | 3 |
| 2016 | 4 | 1 |
| 2017 | 4 | 1 |
| 2018 | 0 | 4 |
| 2019 | 2 | 2 |
| 2020 | 3 | 2 |
| 2021 | 3 | 5 |
| 2022 | 3 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Moving wall positive displacement turbine system6 Feb 2024US 11,891,948 B1
- Vane drive rotary combustion engine21 Feb 2023US 11,585,221 B1The United States of America as represented by the Secretary of the Navy
- Rotary sliding vane machine with hydrostatic slide bearings for the vanes31 May 2022US 11,346,222 B2Tocircle Industries AS
- Six-stroke rotary-vane internal combustion engine with hermetically sealed working space31 May 2022US 11,346,278 B2
- Displacement expanding apparatus and engine including the same10 May 2022US 11,326,453 B2
- Apparatus and Method Utilizing Energy Recovery Devices, Including in Fluid Separation Processes23 Oct 2025US 2025/0327435 A1Amorphic Tech Ltd
- Rotary combustion engine and associated combustion method7 Nov 2024US 2024/0369013 A1
- Rotary-vane mechanism for engines and compressors23 Dec 2021US 2021/0396231 A1
- Displacement expanding apparatus and engine including the same23 Sep 2021US 2021/0293146 A1
- Arc Turbine9 Sep 2021US 2021/0277780 A1
Most cited
By later US patents
- Sliding vane engine42US 5,524,587 AMallen Research Limited Partnership · 1996
- Rotary type fluid machine, vane type fluid machine, and waste heat recovering device for internal combustion engine40US 6,675,765 B2Honda Giken Kogyo Kabushiki Kaisha · 2004
- Multiple vane rotary internal combustion engine35US 5,277,158 APangman Propulsion Company · 1994
- Elliptical rotary engine34US 6,776,136 B12004
- Sliding vane type of compressor-expander having differential eccentricity feature31US 4,088,426 AThe Rovac Corporation · 1978