GB709241A - Improvements relating to cap shoes for mine roof supports - Google Patents
Improvements relating to cap shoes for mine roof supportsInfo
- Publication number
- GB709241A GB709241A GB5535/52A GB553552A GB709241A GB 709241 A GB709241 A GB 709241A GB 5535/52 A GB5535/52 A GB 5535/52A GB 553552 A GB553552 A GB 553552A GB 709241 A GB709241 A GB 709241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bar
- mine roof
- shoe
- improvements relating
- screw
- 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
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
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)
- Bridges Or Land Bridges (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL709240X | 1951-03-07 | ||
| NL760654X | 1953-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB709241A true GB709241A (en) | 1954-05-19 |
Family
ID=31980708
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5535/52A Expired GB709241A (en) | 1951-03-07 | 1952-03-03 | Improvements relating to cap shoes for mine roof supports |
| GB5534/52A Expired GB709240A (en) | 1951-03-07 | 1952-03-03 | Improvements relating to roof supporting structures, as used in mines |
| GB30683/54A Expired GB760654A (en) | 1951-03-07 | 1954-10-25 | Improvements in and relating to mine roof supporting structures |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5534/52A Expired GB709240A (en) | 1951-03-07 | 1952-03-03 | Improvements relating to roof supporting structures, as used in mines |
| GB30683/54A Expired GB760654A (en) | 1951-03-07 | 1954-10-25 | Improvements in and relating to mine roof supporting structures |
Country Status (4)
-
0
- BE BE532795D patent/BE532795A/xx unknown
- NL NL159679D patent/NL159679A/xx unknown
- NL NLAANVRAGE7206200,A patent/NL182433B/xx unknown
- NL NL6811291.A patent/NL159680B/xx unknown
- BE BE509662D patent/BE509662A/xx unknown
- BE BE509661D patent/BE509661A/xx unknown
- NL NL89595D patent/NL89595C/xx active
-
1952
- 1952-02-23 FR FR1051786D patent/FR1051786A/fr not_active Expired
- 1952-02-28 FR FR1051869D patent/FR1051869A/fr not_active Expired
- 1952-03-03 GB GB5535/52A patent/GB709241A/en not_active Expired
- 1952-03-03 GB GB5534/52A patent/GB709240A/en not_active Expired
-
1954
- 1954-10-25 GB GB30683/54A patent/GB760654A/en not_active Expired
- 1954-10-26 FR FR67282D patent/FR67282E/fr active Active
Also Published As
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