F01D 3/00
Machines or engines with axial-thrust balancing effected by working-fluid
F01D3/00 (Machines or engines with axial-thrust balancing effected by working-fluid) appears on 225 US grants and 166 published applications in this corpus.
Search patents in F01D- Granted patents
- 225
- Published applications
- 166
- Assignees
- 104
- Inventors
- 551
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 2 |
| 2003 | 4 | 2 |
| 2004 | 4 | 4 |
| 2005 | 3 | 4 |
| 2006 | 1 | 5 |
| 2007 | 5 | 5 |
| 2008 | 4 | 7 |
| 2009 | 2 | 7 |
| 2010 | 4 | 12 |
| 2011 | 3 | 18 |
| 2012 | 14 | 8 |
| 2013 | 13 | 10 |
| 2014 | 13 | 9 |
| 2015 | 1 | 9 |
| 2016 | 9 | 7 |
| 2017 | 3 | 9 |
| 2018 | 6 | 7 |
| 2019 | 9 | 14 |
| 2020 | 17 | 4 |
| 2021 | 8 | 9 |
| 2022 | 8 | 2 |
| 2023 | 7 | 3 |
| 2024 | 5 | 3 |
| 2025 | 6 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pressure control in a turboexpander23 Dec 2025US 12,503,955 B2Sapphire Technologies, Inc.
- Spiral grooved thrust generator on turbine wheel back plate7 Oct 2025US 12,435,646 B1Garrett Transportation I Inc.
- Turbine engine including a water system16 Sep 2025US 12,416,259 B1General Electric Company
- Control device, control method, and system22 Jul 2025US 12,366,174 B2Mitsubishi Heavy Industries, Ltd.
- Gas turbine engines and methods for reducing spool thrust in a turbine section thereof1 Jul 2025US 12,345,173 B2Honeywell International Inc.
- Thrust bearings to support axial thrust in pumps2 Jul 2026US 2026/0185463 A1General Electric Company
- Online rotor thrust adjustment system18 Dec 2025US 2025/0382895 A1Nuovo Pignone Tecnologie Srl
- Turbine engine including a water system18 Sep 2025US 2025/0290446 A1General Electric Company
- Pressure control in a turboexpander5 Jun 2025US 2025/0179929 A1Sapphire Technologies, Inc.
- Gas turbine engines and methods for reducing spool thrust in a turbine section thereof29 May 2025US 2025/0172069 A1Honeywell International Inc.
Most cited
By later US patents
- Labyrinth seal system73US 3,989,410 AGeneral Electric Company · 1976
- Anti-contamination thrust balancing system for gas turbine engines70US 5,402,636 AUnited Technologies Corporation · 1995
- Thrust controlled rotary apparatus66US 4,170,435 A1979
- Rotary fluid handling machine having reduced fluid leakage62US 4,472,107 AUnion Carbide Corporation · 1984
- Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system57US 10,570,777 B2Echogen Power Systems, LLC · 2020