F01D 1/32
Non-positive-displacement machines or engines: with pressure velocity transformation exclusively in rotor
Official title: with pressure velocity transformation exclusively in rotor, e.g. the rotor rotating under the influence of jets issuing from the rotor, {e.g. Heron turbines (the working fluid being a combustion products F02C3/165; jet propulsion plants per se F02K)}
F01D1/32 (Non-positive-displacement machines or engines: with pressure velocity transformation exclusively in rotor) appears on 151 US grants and 124 published applications in this corpus.
Search patents in F01D- Granted patents
- 151
- Published applications
- 124
- Assignees
- 63
- Inventors
- 211
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 0 |
| 2003 | 3 | 4 |
| 2004 | 3 | 7 |
| 2005 | 2 | 6 |
| 2006 | 4 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 1 |
| 2009 | 3 | 7 |
| 2010 | 4 | 4 |
| 2011 | 1 | 9 |
| 2012 | 6 | 5 |
| 2013 | 4 | 9 |
| 2014 | 6 | 6 |
| 2015 | 5 | 8 |
| 2016 | 1 | 3 |
| 2017 | 4 | 8 |
| 2018 | 7 | 8 |
| 2019 | 6 | 5 |
| 2020 | 4 | 7 |
| 2021 | 1 | 4 |
| 2022 | 4 | 5 |
| 2023 | 4 | 4 |
| 2024 | 5 | 4 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid propellant gasifier and pressurizer2 Sep 2025US 12,404,822 B2
- Fluid turbine assembly and method of actuation of a fluid turbine12 Aug 2025US 12,385,398 B2
- Water-injected steam engine25 Feb 2025US 12,234,752 B2Enexsys Research Inc.
- Rotor having a plurality of spiral pathways to pass liquid or gas therethrough to increase power thereof29 Oct 2024US 12,129,856 B2
- Rotary manifold for a cohesion-type drive23 Jul 2024US 12,044,129 B2McGuire Aero Propulsion Solutions Inc.
- Turbine engine system7 May 2026US 2026/0125981 A1Heleng Inc.
- Liquid propellant gasifier and pressurizer19 Jun 2025US 2025/0198367 A1
- Water-injected steam engine10 Oct 2024US 2024/0337204 A1Enexsys Research Inc.
- Fluid turbine assembly and method of actuation of a fluid turbine1 Aug 2024US 2024/0254956 A1Gaia Turbine SA
- Hydrogen recirculation turbocharger9 May 2024US 2024/0154139 A1Joby Aero, Inc.
Most cited
By later US patents
- Jet assisted counter rotating wind turbine98US 6,127,739 A2000
- Jet assisted hybrid wind turbine system91US 6,492,743 B12002
- Turbine cooling for gas turbine engine81US 4,820,116 AUnited Technologies Corporation · 1989
- Fresh water production from power plant waste heat64US 4,391,102 ABiphase Energy Systems · 1983
- Heat exchanger54US 4,044,824 A1977