F03D 3/0454
And only with concentrating action, i.e. only increasing the airflow speed into
Official title: {and only with concentrating action, i.e. only increasing the airflow speed into the rotor, e.g. divergent outlets (F03D3/0463 takes precedence)}
F03D3/0454 (And only with concentrating action, i.e. only increasing the airflow speed into) appears on 63 US grants and 82 published applications in this corpus.
Search patents in F03D- Granted patents
- 63
- Published applications
- 82
- Assignees
- 27
- Inventors
- 115
- Latest grant
- 28 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 9 |
| 2008 | 1 | 4 |
| 2009 | 0 | 5 |
| 2010 | 3 | 13 |
| 2011 | 3 | 4 |
| 2012 | 4 | 4 |
| 2013 | 3 | 6 |
| 2014 | 5 | 2 |
| 2015 | 1 | 3 |
| 2016 | 5 | 6 |
| 2017 | 3 | 2 |
| 2018 | 2 | 5 |
| 2019 | 2 | 1 |
| 2020 | 2 | 6 |
| 2021 | 4 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Venturi effect charging system for automobile batteries92US 5,280,827 A1994
- Wind motor rotor having substantially constant pressure and relative velocity for airflow therethrough90US 4,084,918 ATurbomachines, Inc. · 1978
- Vertical axis wind turbine53US 6,942,454 B22005
- Electrohydraulic vehicle drive system46US 4,753,078 A1988
- Vertical axis wind powered generator45US 5,038,049 A1991