E21C 31/10
Driving means incorporated in machines for slitting or completely freeing the mineral
Official title: for slewing parts of the machines
E21C31/10 (Driving means incorporated in machines for slitting or completely freeing the mineral) appears on 27 US grants and 7 published applications in this corpus.
Search patents in E21C- Granted patents
- 27
- Published applications
- 7
- Assignees
- 21
- Inventors
- 59
- Latest grant
- 19 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Cutting assembly for longwall mining system19 Sep 2023US 11,761,333 B2Joy Global Underground Mining LLC
- Mining machine with articulating boom and independent material handling system19 Jul 2022US 11,391,149 B2Joy Global Underground Mining LLC
- Mining machine with articulating boom and independent material handling system29 Dec 2020US 10,876,400 B2Joy Global Underground Mining LLC
- Vertical lifting type drum coal-mining machine without rocker arm18 Aug 2020US 10,746,020 B2
- Underground mining machine1 Apr 2008US 7,350,875 B2DBT GmbH
- Mining machine and method for controlling movement of a movable element of a mining machine4 Apr 2024US 2024/0110477 A1Sandvik Mining and Construction Oy
- Cutting assembly for longwall mining system19 May 2022US 2022/0154576 A1Joy Global Underground Mining LLC
- Mining machine with articulating boom and independent material handling system8 Apr 2021US 2021/0102463 A1Joy Global Underground Mining LLC
- Vertical lifting type comprehensive drum coal-mining machine without rocker arm9 Jan 2020US 2020/0011174 A1
- Mining machine with articulating boom and independent material handling system22 Feb 2018US 2018/0051562 A1Joy MM Delaware, Inc.
Most cited
By later US patents
- Cutting machine22US 4,589,701 AGewerkschaft Eisenhutte Westfalia · 1986
- Mining boom linkage for separate sump and swing cutting18US 3,966,258 AJoy Manufacturing Company · 1976
- Mining machine with detachable articulated cutting assembly16US 6,224,164 B1Joy MM Delaware, Inc. · 2001
- Low profile mining machine11US 4,133,582 A1979
- Swivelling arrangements10US 4,361,219 ACoal Industry (Patents) Limited · 1982