F01C 21/0818
Vane tracking
Official title: {Vane tracking; control therefor}
F01C21/0818 (Vane tracking) appears on 601 US grants and 510 published applications in this corpus.
Search patents in F01C- Granted patents
- 601
- Published applications
- 510
- Assignees
- 221
- Inventors
- 903
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 12 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 14 | 0 |
| 1992 | 9 | 0 |
| 1993 | 10 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 11 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 14 | 0 |
| 2001 | 7 | 4 |
| 2002 | 10 | 14 |
| 2003 | 14 | 18 |
| 2004 | 15 | 28 |
| 2005 | 15 | 36 |
| 2006 | 20 | 20 |
| 2007 | 10 | 14 |
| 2008 | 11 | 29 |
| 2009 | 30 | 28 |
| 2010 | 15 | 16 |
| 2011 | 12 | 29 |
| 2012 | 14 | 21 |
| 2013 | 16 | 19 |
| 2014 | 18 | 25 |
| 2015 | 28 | 24 |
| 2016 | 22 | 21 |
| 2017 | 22 | 29 |
| 2018 | 22 | 27 |
| 2019 | 16 | 13 |
| 2020 | 18 | 28 |
| 2021 | 15 | 22 |
| 2022 | 24 | 10 |
| 2023 | 15 | 17 |
| 2024 | 17 | 9 |
| 2025 | 9 | 6 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sliding vane pump or turbine having track followers11 Aug 2026US 12,704,069 B2Amorphic Tech Ltd
- Vane pump featuring fluid lubrication for an impeller17 Mar 2026US 12,577,949 B2Schwäbische Hüttenwerke Automotive GmbH
- Positive displacement rotary machine10 Feb 2026US 12,546,221 B2Tocircle Industries AS
- Bidirectional rotary hydraulic motor and pump13 Jan 2026US 12,523,153 B2
- Combined sealing piece, volumetric machine and wide fuel engine18 Nov 2025US 12,473,872 B2
- Rotary Vane Internal Combustion Engine17 Sep 2026US 2026/0275869 A1
- Vane pump with hydrostatic pressure plates12 Feb 2026US 2026/0043402 A1Eaton Intelligent Power Limited
- Rotary vane pump with angular position sensing capability12 Feb 2026US 2026/0043403 A1Schaeffler Technologies AG & Co. KG
- Positive displacement rotary machine18 Sep 2025US 2025/0290420 A1Tocircle Industries AS
- Mechanical seal device18 Sep 2025US 2025/0290566 A1Pillar Corporation
Most cited
By later US patents
- Sliding-blade rotary air-heat engine with isothermal compression of air99US 5,839,270 A1998
- Rotary hydraulic vane pump with undervane passages for priming53US 4,386,891 AGeneral Motors Corporation · 1983
- Vane type compressor having elliptical stator with doubly-offset rotor52US 4,410,305 AThe Rovac Corporation · 1983
- Rotary pump having a hydraulic intermediate capacity with first and second connections48US 6,817,847 B2LuK Fahrzeug-Hydraulik GmbH & Co.KG · 2004
- Reduced rotor assembly diameter vane pump47US 7,997,882 B2MAGNA Powertrain AG & Co KG · 2011