F04D 13/022
A coupling allowing slip
Official title: {a coupling allowing slip, e.g. torque converter}
F04D13/022 (A coupling allowing slip) appears on 66 US grants and 77 published applications in this corpus.
Search patents in F04D- Granted patents
- 66
- Published applications
- 77
- Assignees
- 66
- Inventors
- 168
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 5 |
| 2006 | 2 | 2 |
| 2007 | 0 | 4 |
| 2008 | 1 | 6 |
| 2009 | 2 | 3 |
| 2010 | 3 | 4 |
| 2011 | 6 | 3 |
| 2012 | 3 | 2 |
| 2013 | 2 | 3 |
| 2014 | 2 | 3 |
| 2015 | 3 | 3 |
| 2016 | 1 | 6 |
| 2017 | 3 | 1 |
| 2018 | 6 | 3 |
| 2019 | 0 | 1 |
| 2020 | 2 | 8 |
| 2021 | 2 | 6 |
| 2022 | 3 | 1 |
| 2023 | 5 | 4 |
| 2024 | 1 | 1 |
| 2025 | 5 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Smooth-starting electrical submersible pumps4 Aug 2026US 12,698,775 B2Saudi Arabian Oil Company
- Device for changing a pump unit of a centrifugal pump and centrifugal pump2 Dec 2025US 12,486,848 B2Levitronix LLC
- Integrated bearing systems for dynamically supporting shafts in pump systems4 Nov 2025US 12,460,647 B2General Electric Company
- Pressure booster with integrated speed drive4 Nov 2025US 12,460,648 B2FSubsea AS
- One way clutch train for arresting backspin1 Jul 2025US 12,345,139 B2Baker Hughes Oilfield Operations LLC
- Smooth-starting electrical submersible pumps1 Jan 2026US 2026/0002428 A1Saudi Arabian Oil Company
- Device for changing a pump unit of a centrifugal pump and centrifugal pump5 Jun 2025US 2025/0180025 A1Levitronix LLC
- Device for changing a pump unit of a centrifugal pump and centrifugal pump5 Jun 2025US 2025/0180039 A1Levitronix LLC
- Vertically suspended centrifugal pump with integral speed reducer2 May 2024US 2024/0141900 A1CPC Pumps International
- One way clutch train for arresting backspin30 Nov 2023US 2023/0383632 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Controllable coolant pump for motor vehicles27US 6,007,303 A1999
- Omnirise hydromag “variable speed magnetic coupling system for subsea pumps”26US 9,964,113 B2Fuglesangs Subsea AS · 2018
- Pump apparatus, systems and methods24US 8,485,798 B2Schlumberger Technology Corporation · 2013
- Hydrodynamic pump units and regulators therefor20US 4,208,171 APumpex Production AB · 1980
- Drive member for a water pump of the cooling-water circuit of an internal combustion engine and frictional shift clutch19US 6,915,887 B2Linning Trucktec GmbH · 2005