F16N 27/00
Proportioning devices
Official title: Proportioning devices (liquid meters G01F)
F16N27/00 (Proportioning devices) appears on 167 US grants and 79 published applications in this corpus.
Search patents in F16N- Granted patents
- 167
- Published applications
- 79
- Assignees
- 119
- Inventors
- 275
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 10 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 11 | 0 |
| 1997 | 6 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 3 |
| 2004 | 2 | 6 |
| 2005 | 2 | 1 |
| 2006 | 5 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 4 |
| 2009 | 0 | 3 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 5 |
| 2013 | 6 | 6 |
| 2014 | 6 | 1 |
| 2015 | 2 | 6 |
| 2016 | 7 | 3 |
| 2017 | 1 | 4 |
| 2018 | 1 | 6 |
| 2019 | 0 | 7 |
| 2020 | 8 | 1 |
| 2021 | 8 | 3 |
| 2022 | 0 | 3 |
| 2023 | 3 | 2 |
| 2024 | 7 | 3 |
| 2025 | 3 | 4 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid flow metering device for aircraft shaft(s)27 Jan 2026US 12,535,183 B2Pratt & Whitney Canada Corp.
- Shovel12 Aug 2025US 12,385,219 B2Sumitomo Construction Machinery Co., Ltd.
- Lubricant metering device13 May 2025US 12,297,958 B2DROPSA S.p.A.
- Multi-adjustable valve for a lubrication system1 Apr 2025US 12,264,626 B2Pratt & Whitney Canada Corp.
- Insertion amount grasping device3 Dec 2024US 12,158,237 B2Toyota Jidosha Kabushiki Kaisha
- Electric-powered lubricator2 Jul 2026US 2026/0185656 A1Makita Corporation
- Electric-powered lubricant dispenser, and method for dispensing lubricant from electric-powered lubricant dispenser2 Jul 2026US 2026/0185657 A1Makita Corporation
- Valve system7 May 2026US 2026/0126125 A1Volvo Truck Corporation
- Fluid flow metering device for aircraft shaft(s)24 Jul 2025US 2025/0237349 A1Pratt & Whitney Canada Corp.
- Multi-adjustable valve for a lubrication system10 Jul 2025US 2025/0223922 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Electrical lubricating apparatus73US 4,274,509 AMadison-Kipp Corporation · 1981
- Lubricant applications to a hole61US 5,565,242 AThe Boeing Company · 1996
- Self compensating flow control lubrication system44US 5,067,454 AAvco Corporation · 1991
- Apparatus for recycling engine lubricating oil37US 4,128,140 AThe Post Office · 1978
- Method and apparatus for deploying ram air turbine and lubricating gear drive therefrom36US 5,174,719 ASundstrand Corporation · 1992