FR2220006B1 - - Google Patents
Info
- Publication number
- FR2220006B1 FR2220006B1 FR7406307A FR7406307A FR2220006B1 FR 2220006 B1 FR2220006 B1 FR 2220006B1 FR 7406307 A FR7406307 A FR 7406307A FR 7406307 A FR7406307 A FR 7406307A FR 2220006 B1 FR2220006 B1 FR 2220006B1
- Authority
- FR
- France
- 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
- 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
- E21D11/20—Special cross- sections, e.g. corrugated
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)
- Foundations (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2310660A DE2310660C2 (en) | 1973-03-03 | 1973-03-03 | Frame-shaped expansion for routes of underground operations, tunnels or the like |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2220006A1 FR2220006A1 (en) | 1974-09-27 |
FR2220006B1 true FR2220006B1 (en) | 1982-04-23 |
Family
ID=5873713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7406307A Expired FR2220006B1 (en) | 1973-03-03 | 1974-02-25 |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE811698A (en) |
CA (1) | CA992335A (en) |
DE (1) | DE2310660C2 (en) |
FR (1) | FR2220006B1 (en) |
GB (1) | GB1453688A (en) |
ZA (1) | ZA741355B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2726471C2 (en) * | 1977-06-11 | 1979-08-09 | Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum | Channel profile, especially for the expansion of mine sections |
-
1973
- 1973-03-03 DE DE2310660A patent/DE2310660C2/en not_active Expired
-
1974
- 1974-02-25 FR FR7406307A patent/FR2220006B1/fr not_active Expired
- 1974-02-25 GB GB836574A patent/GB1453688A/en not_active Expired
- 1974-02-26 CA CA193,497A patent/CA992335A/en not_active Expired
- 1974-02-28 BE BE141494A patent/BE811698A/en unknown
- 1974-03-01 ZA ZA00741355A patent/ZA741355B/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2310660C2 (en) | 1974-06-27 |
DE2310660A1 (en) | 1973-11-22 |
ZA741355B (en) | 1975-04-30 |
DE2310660B1 (en) | 1973-11-22 |
FR2220006A1 (en) | 1974-09-27 |
CA992335A (en) | 1976-07-06 |
BE811698A (en) | 1974-06-17 |
GB1453688A (en) | 1976-10-27 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |