GB2168409B - Hydraulic ram extension measuring device - Google Patents
Hydraulic ram extension measuring deviceInfo
- Publication number
- GB2168409B GB2168409B GB08431719A GB8431719A GB2168409B GB 2168409 B GB2168409 B GB 2168409B GB 08431719 A GB08431719 A GB 08431719A GB 8431719 A GB8431719 A GB 8431719A GB 2168409 B GB2168409 B GB 2168409B
- Authority
- GB
- United Kingdom
- Prior art keywords
- measuring device
- hydraulic ram
- extension measuring
- ram extension
- hydraulic
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/26—Hydraulic or pneumatic control
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08431719A GB2168409B (en) | 1984-12-15 | 1984-12-15 | Hydraulic ram extension measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08431719A GB2168409B (en) | 1984-12-15 | 1984-12-15 | Hydraulic ram extension measuring device |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8431719D0 GB8431719D0 (en) | 1985-01-30 |
GB2168409A GB2168409A (en) | 1986-06-18 |
GB2168409B true GB2168409B (en) | 1988-06-08 |
Family
ID=10571258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08431719A Expired GB2168409B (en) | 1984-12-15 | 1984-12-15 | Hydraulic ram extension measuring device |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2168409B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9105699D0 (en) * | 1991-03-18 | 1991-05-01 | British Gas Plc | Supplying fluid |
GB2581983B (en) * | 2019-03-06 | 2021-07-21 | Caterpillar Global Mining Gmbh | Method and device for monitoring operation of a mining machine unit |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1010872A (en) * | 1962-10-10 | 1965-11-24 | Dowty Mining Equipment Ltd | Roof support assembly suitable for use in mines |
GB1110831A (en) * | 1964-12-22 | 1968-04-24 | Coal Industry Patents Ltd | Flow meter monitoring of a system of mine roof supports |
SE408094B (en) * | 1977-09-26 | 1979-05-14 | Fluid Inventor Ab | A FLOWING MEDIUM METHODING DEVICE |
-
1984
- 1984-12-15 GB GB08431719A patent/GB2168409B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2168409A (en) | 1986-06-18 |
GB8431719D0 (en) | 1985-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |