GB2320312B - Valves - Google Patents
ValvesInfo
- Publication number
- GB2320312B GB2320312B GB9725915A GB9725915A GB2320312B GB 2320312 B GB2320312 B GB 2320312B GB 9725915 A GB9725915 A GB 9725915A GB 9725915 A GB9725915 A GB 9725915A GB 2320312 B GB2320312 B GB 2320312B
- Authority
- GB
- United Kingdom
- Prior art keywords
- valves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/017,955 US5950673A (en) | 1997-12-09 | 1998-02-03 | Valves |
AU52956/98A AU739640B2 (en) | 1997-12-09 | 1998-02-05 | Valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9625635.9A GB9625635D0 (en) | 1996-12-10 | 1996-12-10 | Valves |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9725915D0 GB9725915D0 (en) | 1998-02-04 |
GB2320312A GB2320312A (en) | 1998-06-17 |
GB2320312B true GB2320312B (en) | 2000-08-02 |
Family
ID=10804230
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB9625635.9A Pending GB9625635D0 (en) | 1996-12-10 | 1996-12-10 | Valves |
GB9725915A Expired - Lifetime GB2320312B (en) | 1996-12-10 | 1997-12-09 | Valves |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB9625635.9A Pending GB9625635D0 (en) | 1996-12-10 | 1996-12-10 | Valves |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB9625635D0 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2329428A (en) * | 1997-09-20 | 1999-03-24 | Joy Mining Machinery Limited | Improvements in and relating to a hydraulic control system |
NO20024992D0 (en) * | 2002-10-17 | 2002-10-17 | Bakke Oil Tools As | Pressure compensated pilot controlled check valve |
NO324956B1 (en) * | 2006-06-15 | 2008-01-14 | Ziebel As | Device for controlled check valve |
DE102019218401B3 (en) * | 2019-11-27 | 2021-04-01 | Hawe Hydraulik Se | Load holding valve, load holding valve set and method for assembling a load holding valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5400816A (en) * | 1990-10-05 | 1995-03-28 | Dana Corporation | Pilot actuated override mechanism for holding valve |
-
1996
- 1996-12-10 GB GBGB9625635.9A patent/GB9625635D0/en active Pending
-
1997
- 1997-12-09 GB GB9725915A patent/GB2320312B/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5400816A (en) * | 1990-10-05 | 1995-03-28 | Dana Corporation | Pilot actuated override mechanism for holding valve |
Also Published As
Publication number | Publication date |
---|---|
GB2320312A (en) | 1998-06-17 |
GB9625635D0 (en) | 1997-01-29 |
GB9725915D0 (en) | 1998-02-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20171208 |