BE630020A - - Google Patents
Info
- Publication number
- BE630020A BE630020A BE630020DA BE630020A BE 630020 A BE630020 A BE 630020A BE 630020D A BE630020D A BE 630020DA BE 630020 A BE630020 A BE 630020A
- Authority
- BE
- Belgium
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR929116A FR1351922A (fr) | 1963-03-25 | 1963-03-25 | étançon de mine extensible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE630020A true BE630020A (pt) |
Family
ID=8800008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE630020D BE630020A (pt) | 1963-03-25 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE630020A (pt) |
| FR (1) | FR1351922A (pt) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1227409B (de) * | 1964-12-31 | 1966-10-27 | Karl Gerlach | Hydraulisch ausfahrbarer und reibungsschluessig verspannbarer Teleskopgrubenstempel |
| HU171077B (hu) * | 1975-01-15 | 1977-11-28 | Banyaszati Kutato Intezet | Gidravlicheskaja shakhtnaja stojka |
| US4037811A (en) * | 1975-12-24 | 1977-07-26 | Oconnor Chadwell | Vertical control for instrument support structure |
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0
- BE BE630020D patent/BE630020A/xx unknown
-
1963
- 1963-03-25 FR FR929116A patent/FR1351922A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1351922A (fr) | 1964-02-07 |