E21C 29/16
Winches or other means for pulling cable or chain
Official title: Winches or other means for pulling cable or chain (winches in general B66D)
E21C29/16 (Winches or other means for pulling cable or chain) appears on 13 US grants and 7 published applications in this corpus.
Search patents in E21C- Granted patents
- 13
- Published applications
- 7
- Assignees
- 6
- Inventors
- 31
- Latest grant
- 13 Jun 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Winch drum tension isolation system13 Jun 2017US 9,676,559 B2Joy MM Delaware, Inc.
- Winch drum tension isolation system25 Oct 2016US 9,475,647 B2Joy MM Delaware, Inc.
- Method for the mining of coal and coal planer installation13 Oct 2009US 7,600,822 B2DBT GmbH
- Driving device for sprocket wheels of chain drives16 Oct 2007US 7,282,826 B2DBT GmbH
- Method for threading wire through a wall or partition20 Nov 2001US 6,318,704 B1
- Winch drum tension isolation system9 Feb 2017US 2017/0036862 A1Joy MM Delaware, Inc.
- Drive unit for chain drives in mining10 Sep 2015US 2015/0256049 A1Caterpillar Global Mining Europe GmbH
- Winch drum tension isolation system18 Sep 2014US 2014/0262693 A1Joy MM Delaware, Inc.
- Method for the mining of coal and coal planer installation8 Feb 2007US 2007/0029864 A1DBT GmbH
- Apparatus and method for installing lines in conduits21 Dec 2006US 2006/0284149 A1
Most cited
By later US patents
- Method for threading wire through a wall or partition11US 6,318,704 B12001
- Method for the mining of coal and coal planer installation9US 7,600,822 B2DBT GmbH · 2009
- Control method for winch of mining machinery6US 4,370,856 AKabushiki Kaisha Mitsui Miike Seisakusho · 1983
- Drive frame and assembly for mining apparatus3US 4,159,851 AGewerkschaft Eisenhutte Westfalia · 1979
- Longwall mining installation having stable-hole plough3US 4,279,445 AGewerkschaft Eisenhutte Westfalia · 1981