E21F 17/08
Distributing hydraulic power
Official title: Distributing hydraulic power; Pipe networks for hydraulic liquid (pipe-line systems in general F17D)
E21F17/08 (Distributing hydraulic power) appears on 12 US grants and 2 published applications in this corpus.
Search patents in E21F- Granted patents
- 12
- Published applications
- 2
- Assignees
- 7
- Inventors
- 26
- Latest grant
- 4 Mar 2008
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Arrangement for passage control of mine vehicles4 Mar 2008US 7,337,865 B2Sandvik Mining and Construction Oy
- Method and hydraulic system for controlling supply of fluid to combine for extracting minerals10 Mar 1987US 4,648,659 AGosudarstvenny Proektno-Konstruktorsky I Experimentalny Institut Ugolnogo Mashinostroenia "Giprouglemash"
- Arrangement for supplying of consumers with pressure fluids6 May 1986US 4,586,530 ABochumer Eisenhutte Heintzmann GmbH & Co. KG
- Supply of liquid media for a hydraulic-mechanically operating mine working machine with sword26 Nov 1985US 4,555,142 AM. A. N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
- Mineral mining installation20 Apr 1982US 4,325,659 AGewerkschaft Eisenhutte Westfalia
Most cited
By later US patents
- Multi-core hydraulic duct27US 4,149,567 AGewerkschaft Eisenhutte Westfalia · 1979
- Hydraulic coupling device21US 4,319,772 AGewerkschaft Eisenhutte Westfalia · 1982
- Hydraulic coupling device13US 4,247,135 AGewerkschaft Eisenhutte Westfalia · 1981
- Arrangement for passage control of mine vehicles7US 7,337,865 B2Sandvik Mining and Construction Oy · 2008
- Hydraulic conduit systems for mine installations4US 4,247,226 AGewerkschaft Eisenhutte Westfalia · 1981