E21B 10/246
With pumping means for feeding lubricant
Official title: {with pumping means for feeding lubricant}
E21B10/246 (With pumping means for feeding lubricant) appears on 28 US grants and 7 published applications in this corpus.
Search patents in E21B- Granted patents
- 28
- Published applications
- 7
- Assignees
- 15
- Inventors
- 44
- Latest grant
- 22 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Grease system for high pressure plug valves22 Feb 2022US 11,255,446 B1BlueCore Completions, LLC
- Cutter for boring head27 Aug 2019US 10,392,865 B2Sandvik Intellectual Property AB
- Device for supplying lubricant to a lubrication point in a machine10 Apr 2018US 9,938,866 B2Skf Lubrication Systems Germany GmbH
- Hydrodynamic pump passages for rolling cone drill bit31 Oct 2006US 7,128,171 B2Baker Hughes Incorporated
- Directional borehole drilling system and method17 Feb 2004US 6,691,804 B2
- Cutter for boring head22 Feb 2018US 2018/0051519 A1Sandvik Intellectual Property AB
- Device for supplying lubricant to a lubrication point in a machine24 Aug 2017US 2017/0241307 A9Skf Lubrication Systems Germany GmbH
- Device for supplying lubricant to a lubrication point in a machine28 Aug 2014US 2014/0238742 A1Skf Lubrication Systems Germany GmbH
- Hydraulic brake for drilling-bit1 Aug 2013US 2013/0192898 A1Hydro Leduc
- Hydrodynamic pump passages for rolling cone drill bit25 Aug 2005US 2005/0183888 A1Baker Hughes Incorporated
Most cited
By later US patents
- Earth drilling knobby bit105US 4,096,917 A1978
- Drill bits with cone retention means52US 4,657,091 A1987
- Plunger lubricant compensator for an earth boring drill bit51US 4,386,667 AHughes Tool Company · 1983
- Hole opener for the top hole section of oil/gas wells48US 5,337,843 AKverneland Klepp AS · 1994
- Sealed lubricated and air cooled rock bit bearing38US 4,386,668 AHughes Tool Company · 1983