F04C 14/04
Control of, monitoring of, or safety arrangements for, machines, pumps or pumping
Official title: specially adapted for reversible machines or pumps
F04C14/04 (Control of, monitoring of, or safety arrangements for, machines, pumps or pumping) appears on 96 US grants and 85 published applications in this corpus.
Search patents in F04C- Granted patents
- 96
- Published applications
- 85
- Assignees
- 86
- Inventors
- 199
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 2 |
| 2003 | 5 | 1 |
| 2004 | 1 | 0 |
| 2005 | 2 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 2 | 1 |
| 2013 | 3 | 4 |
| 2014 | 2 | 3 |
| 2015 | 0 | 6 |
| 2016 | 3 | 3 |
| 2017 | 1 | 7 |
| 2018 | 5 | 6 |
| 2019 | 5 | 5 |
| 2020 | 4 | 3 |
| 2021 | 5 | 1 |
| 2022 | 2 | 10 |
| 2023 | 6 | 6 |
| 2024 | 7 | 7 |
| 2025 | 4 | 4 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Progressive cavity pump system having reverse mode8 Sep 2026US 12,729,682 B2Schlumberger Technology Corporation
- Fluid rotary machine with an encoder module23 Jun 2026US 12,662,985 B2Danfoss Power Solutions ApS
- Integrated pump device16 Jun 2026US 12,655,857 B2Denso Corporation
- Pre-pressurized system with reverse rotation of pump for valve actuation16 Dec 2025US 12,497,957 B2Johnson Electric Motion Technology Canada Ltd.
- Pump with variable suction/discharge amount and drive device composed of the pump and driving method thereof9 Sep 2025US 12,410,793 B2CH Creative Co., Ltd.
- Hig outer rotor shadow pockets21 May 2026US 2026/0139670 A1Hanon Systems EFP Canada Ltd.
- Two-Stage Pump27 Nov 2025US 2025/0361864 A1Truma Gerätetechnik GmbH & Co. KG
- Fluid rotary machine with an encoder module26 Jun 2025US 2025/0207583 A1Danfoss Power Solutions ApS
- Rotary Pump19 Jun 2025US 2025/0198405 A1ECO Holding 1 GmbH
- Pump with pressure disc5 Jun 2025US 2025/0180015 A1ITT Bornemann GmbH
Most cited
By later US patents
- Gerotor pump having an eccentric ring housing with an integral pressure chamber45US 6,648,611 B2Torque-Traction Technologies, Inc. · 2003
- Bi-rotational pump/hydraulic actuator44US 6,979,185 B22005
- Reversible flow vane pump with improved porting28US 4,578,948 ASundstrand Corporation · 1986
- Reversible variable displacement hydraulic pump and motor23US 6,537,047 B22003
- Pump drive head pump assembly with a hydraulic pump circuit for preventing back-spin when the drive head has been shut off22US 6,113,355 AWeatherford Holding U.S., Inc. · 2000