BE507997A - - Google Patents
Info
- Publication number
- BE507997A BE507997A BE507997DA BE507997A BE 507997 A BE507997 A BE 507997A BE 507997D A BE507997D A BE 507997DA BE 507997 A BE507997 A BE 507997A
- Authority
- BE
- Belgium
Links
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
- E21D15/515—Particular fluids not covered by any chemical subdivision
-
- 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
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/30—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber
- E21D15/306—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber by means of a liquid
-
- 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)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE747251X | 1951-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE507997A true BE507997A (US07321065-20080122-C00160.png) |
Family
ID=6648590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE507997D BE507997A (US07321065-20080122-C00160.png) | 1951-01-09 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE507997A (US07321065-20080122-C00160.png) |
| FR (1) | FR1060827A (US07321065-20080122-C00160.png) |
| GB (1) | GB747251A (US07321065-20080122-C00160.png) |
| NL (1) | NL166402B (US07321065-20080122-C00160.png) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928643A (en) * | 1953-02-21 | 1960-03-15 | Bellmann Eugen | Prop-type supporting device |
| US2938699A (en) * | 1953-01-15 | 1960-05-31 | Bellmann Emma Elfriede | Prop-type supporting devices |
-
0
- BE BE507997D patent/BE507997A/xx unknown
- NL NL7016353.A patent/NL166402B/xx unknown
-
1951
- 1951-12-31 GB GB30476/51A patent/GB747251A/en not_active Expired
-
1952
- 1952-01-09 FR FR1060827D patent/FR1060827A/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2938699A (en) * | 1953-01-15 | 1960-05-31 | Bellmann Emma Elfriede | Prop-type supporting devices |
| US2928643A (en) * | 1953-02-21 | 1960-03-15 | Bellmann Eugen | Prop-type supporting device |
Also Published As
| Publication number | Publication date |
|---|---|
| NL166402B (nl) | |
| GB747251A (en) | 1956-03-28 |
| FR1060827A (fr) | 1954-04-06 |
