BE539300A - - Google Patents
Info
- Publication number
- BE539300A BE539300A BE539300DA BE539300A BE 539300 A BE539300 A BE 539300A BE 539300D A BE539300D A BE 539300DA BE 539300 A BE539300 A BE 539300A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- strut
- pressure
- chamber
- piston
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 2
- 108700017836 Prophet of Pit-1 Proteins 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 241001237728 Precis Species 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- ZMRUPTIKESYGQW-UHFFFAOYSA-N propranolol hydrochloride Chemical compound [H+].[Cl-].C1=CC=C2C(OCC(O)CNC(C)C)=CC=CC2=C1 ZMRUPTIKESYGQW-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
- E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
- E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
- E21D15/587—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded by means of power accumulators to be pre-charged by rock pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Damping Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE539300A true BE539300A (da) |
Family
ID=169048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE539300D BE539300A (da) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE539300A (da) |
-
0
- BE BE539300D patent/BE539300A/fr unknown
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