E21C 29/14
By haulage cable or chain pulling the machine along the working face
Official title: by haulage cable or chain pulling the machine along the working face
E21C29/14 (By haulage cable or chain pulling the machine along the working face) appears on 43 US grants and 21 published applications in this corpus.
Search patents in E21C- Granted patents
- 43
- Published applications
- 21
- Assignees
- 17
- Inventors
- 72
- Latest grant
- 17 Dec 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 2 | 2 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 3 | 0 |
| 2014 | 1 | 3 |
| 2015 | 2 | 3 |
| 2016 | 2 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Plow guide assembly for plow guides17 Dec 2019US 10,508,540 B2Caterpillar Global Mining Europe GmbH
- Winch drum tension isolation system13 Jun 2017US 9,676,559 B2Joy MM Delaware, Inc.
- Drive connection with integrated chain tensioning apparatus for face conveyors22 Nov 2016US 9,499,347 B2Caterpillar Global Mining Europe GmbH
- Winch drum tension isolation system25 Oct 2016US 9,475,647 B2Joy MM Delaware, Inc.
- Plowing device15 Sep 2015US 9,133,710 B2Thiele GmbH & Co.KG
- Plow guide assembly for plow guides12 Oct 2017US 2017/0292378 A1Caterpillar Global Mining Europe GmbH
- Winch drum tension isolation system9 Feb 2017US 2017/0036862 A1Joy MM Delaware, Inc.
- Drive connection with integrated chain tensioning apparatus for face conveyors24 Mar 2016US 2016/0083191 A1Caterpillar Global Mining Europe GmbH
- Excavating deposits from an underground formation layer29 Oct 2015US 2015/0308267 A1
- Extraction installation for mineral extraction1 Oct 2015US 2015/0275664 A1Caterpillar Global Mining Europe GmbH
Most cited
By later US patents
- Method and a device for tensioning endless drive belts45US 5,641,058 AWestfalia Becorit Industrietechnik GmbH · 1997
- Chain drive or return arrangement and chain assembly and sprocket employed therein22US 8,038,558 B2DBT GmbH · 2011
- Extraction device, particularly for mining, and method for controlling the extraction device21US 8,550,236 B2Caterpillar Global Mining Europe GmbH · 2013
- Drive systems for mining apparatus20US 4,078,452 AGewerkschaft Eisenhutte Westfalia · 1978
- Fiber optic cable protection in a mining system17US 8,622,481 B2Joy MM Delaware, Inc. · 2014