F04C 2/106
Spool type distribution valves
Official title: {Spool type distribution valves}
F04C2/106 (Spool type distribution valves) appears on 22 US grants and 9 published applications in this corpus.
Search patents in F04C- Granted patents
- 22
- Published applications
- 9
- Assignees
- 10
- Inventors
- 28
- Latest grant
- 6 Dec 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Torque-generating steering device6 Dec 2016US 9,512,838 B2Eaton Corporation
- Gerotor motor and brake assembly22 May 2012US 8,182,250 B2White Drive Products, Inc.
- Gerotor motor and brake assembly13 Apr 2010US 7,695,258 B2White Drive Products, Inc.
- Vented high pressure shaft seal24 Oct 2006US 7,125,020 B2Eaton Corporation
- Functionalties of axially movable spool valve21 Dec 2004US 6,832,903 B2Sauer-Danfoss ApS
- Gerotor-type fluid motor4 Jun 2026US 2026/0153084 A1
- Torque-generating steering device18 Sep 2014US 2014/0271309 A1Eaton Corporation
- Gerotor motor and brake assembly15 Jul 2010US 2010/0178188 A1White Drive Products, Inc.
- Gerotor motor and brake assembly8 Nov 2007US 2007/0258840 A1White Drive Products, Inc.
- Vented high pressure shaft seal19 Aug 2004US 2004/0160013 A1Eaton Corporation
Most cited
By later US patents
- Rotary fluid pressure device11US 4,285,643 A1981
- Fluid pressure operated wheel drive10US 4,253,807 AEaton Corporation · 1981
- Distributing valve on a hydraulic rotary piston engine8US 4,106,883 ADanfoss A/S · 1978
- Hydraulic motor having multiple speed ratio capability8US 6,544,018 B2Eaton Corporation · 2003
- Gerotor motor and improved spool valve therefor7US 6,033,195 AEaton Corporation · 2000