GB1112940A - Hydraulic prop - Google Patents
Hydraulic propInfo
- Publication number
- GB1112940A GB1112940A GB5061765A GB5061765A GB1112940A GB 1112940 A GB1112940 A GB 1112940A GB 5061765 A GB5061765 A GB 5061765A GB 5061765 A GB5061765 A GB 5061765A GB 1112940 A GB1112940 A GB 1112940A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- valve
- release valve
- nov
- props
- 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
- 230000007246 mechanism Effects 0.000 abstract 2
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 abstract 1
- 108700017836 Prophet of Pit-1 Proteins 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 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
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
-
- 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
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
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)
- Sealing Devices (AREA)
- Safety Valves (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
1,112,940. Hydraulic pit props. GLOWNY INSTITUT GORNICTWA. 29 Nov., 1965 [27 Nov., 1964], No. 50617/65. Heading E1E. A hydraulic pit prop 1, 2 is provided with a release valve A in the piston head 7 which valve includes an axially slidable element 8 co-operating with another element 5 fixed on the piston head to release fluid from the compression chamber 4 into a reservoir 3, ring- seals 10 of circular cross-section being disposed around one of the elements and compressed between the two said elements to provide a seal between communicable passages formed in the elements. The release valve is actuated by a crank mechanism acting on a pull-rod 13, see also Fig. 5 (not shown). For various modification of release valve incorporated in props additionally provided with relief valve and pump mechanisms. Figs. 2, 3 and 4 (not shown) should be referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL10640764 | 1964-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1112940A true GB1112940A (en) | 1968-05-08 |
Family
ID=19943917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5061765A Expired GB1112940A (en) | 1964-11-27 | 1965-11-29 | Hydraulic prop |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE672908A (en) |
| DE (1) | DE1458691A1 (en) |
| GB (1) | GB1112940A (en) |
| NL (1) | NL6515403A (en) |
-
1965
- 1965-11-26 NL NL6515403A patent/NL6515403A/xx unknown
- 1965-11-26 DE DE19651458691 patent/DE1458691A1/en active Pending
- 1965-11-26 BE BE672908D patent/BE672908A/xx unknown
- 1965-11-29 GB GB5061765A patent/GB1112940A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE672908A (en) | 1966-03-16 |
| NL6515403A (en) | 1966-05-31 |
| DE1458691A1 (en) | 1969-09-18 |
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