F16D 31/04
Fluid couplings or clutches with pumping sets of the volumetric type, i.e.
Official title: using gear-pumps
F16D31/04 (Fluid couplings or clutches with pumping sets of the volumetric type, i.e.) appears on 50 US grants and 24 published applications in this corpus.
Search patents in F16D- Granted patents
- 50
- Published applications
- 24
- Assignees
- 30
- Inventors
- 69
- Latest grant
- 18 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 2 | 0 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 4 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Positive displacement pump including an unloading device18 Oct 2022US 11,473,574 B2Deere & Company
- Positive displacement pump including an unloading device28 Sep 2021US 11,131,303 B2Deere & Company
- Power transfer system and method using a variable speed ratio regulating device4 Aug 2020US 10,731,735 B1Mainstream Engineering Corporation
- Downhole tool comprising a rotating part with a torque limiting coupling25 Feb 2020US 10,570,673 B2Qinterra Technologies AS
- Positive displacement pump including an unloading device4 Jun 2019US 10,309,396 B2Deere & Company
- Positive displacement pump including an unloading device26 Aug 2021US 2021/0262464 A1Deere & Company
- Positive displacement pump including an unloading device19 Sep 2019US 2019/0285068 A1Deere & Company
- Downhole Tool Comprising A Rotating Part With A Torque Limiting Coupling26 Jul 2018US 2018/0209491 A1Qinterra Technologies AS
- A hydrostatic transmission and method of operation19 Apr 2018US 2018/0106352 A1Concept Design
- Positive displacement pump including an unloading device2 Nov 2017US 2017/0314553 A1Deere & Company
Most cited
By later US patents
- Temperature and pressure compensated geared traction unit25US 5,358,454 ANew Venture Gear, Inc. · 1994
- Fluid clutch17US 5,575,368 AUsui Kokusai Sangyo Kaisha Limited · 1996
- Rotational output control system14US 6,000,513 A1999
- Geared traction unit13US 5,456,642 ANew Venture Gear, Inc. · 1995
- Pump assembly13US 7,347,047 B1Hydro-Gear Limited Partnership · 2008