FR821029A - Joint cover for metal support in mines - Google Patents
Joint cover for metal support in minesInfo
- Publication number
- FR821029A FR821029A FR821029DA FR821029A FR 821029 A FR821029 A FR 821029A FR 821029D A FR821029D A FR 821029DA FR 821029 A FR821029 A FR 821029A
- Authority
- FR
- France
- Prior art keywords
- mines
- metal support
- joint cover
- joint
- cover
- 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
- 239000002184 metal Substances 0.000 title 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM132715D DE646473C (en) | 1935-11-23 | 1935-11-23 | Connection for the extension parts of flexible, arched or ring-shaped pit support frames |
DEM134439D DE647482C (en) | 1935-11-23 | 1936-05-09 | Connection for the extension parts of flexible, arched or ring-shaped pit support frames |
DEM134545D DE649479C (en) | 1935-11-23 | 1936-05-18 | Connection for the extension parts of flexible arched or ring-shaped pit support frame |
Publications (1)
Publication Number | Publication Date |
---|---|
FR821029A true FR821029A (en) | 1937-11-25 |
Family
ID=6738946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR821029D Expired FR821029A (en) | 1935-11-23 | 1936-11-09 | Joint cover for metal support in mines |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE418280A (en) |
FR (1) | FR821029A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3448955A (en) * | 1965-12-16 | 1969-06-10 | Guest Keen & Nettlefolds Ltd | Splice joint for cable trays |
-
1936
- 1936-11-06 BE BE418280D patent/BE418280A/en unknown
- 1936-11-09 FR FR821029D patent/FR821029A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3448955A (en) * | 1965-12-16 | 1969-06-10 | Guest Keen & Nettlefolds Ltd | Splice joint for cable trays |
Also Published As
Publication number | Publication date |
---|---|
BE418280A (en) | 1936-12-31 |
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