ZA838848B - - Google Patents
Info
- Publication number
- ZA838848B ZA838848B ZA838848A ZA838848A ZA838848B ZA 838848 B ZA838848 B ZA 838848B ZA 838848 A ZA838848 A ZA 838848A ZA 838848 A ZA838848 A ZA 838848A ZA 838848 B ZA838848 B ZA 838848B
- Authority
- ZA
- South Africa
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
- E21D15/02—Non-telescopic props
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA826225 | 1982-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA838848B true ZA838848B (xx) | 1984-08-29 |
Family
ID=25576240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA838848A ZA838848B (xx) | 1982-08-26 | 1983-11-28 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0160133A1 (xx) |
| AU (1) | AU575047B2 (xx) |
| CA (1) | CA1216434A (xx) |
| ZA (1) | ZA838848B (xx) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1231843A (en) * | 1983-10-14 | 1988-01-26 | Dirk C.S. Venter | Elongate mine support |
| US6910834B2 (en) | 2003-05-27 | 2005-06-28 | Burrell Mining Products, Inc. | Mine prop |
| US8851805B2 (en) | 2012-08-30 | 2014-10-07 | Burrell Mining Products, Inc. | Telescopic mine roof support |
| US9611738B2 (en) | 2014-08-27 | 2017-04-04 | Burrell Mining Products, Inc. | Ventilated mine roof support |
| US9903203B2 (en) | 2014-08-27 | 2018-02-27 | Burrell Mining Products, Inc. | Ventilated mine roof support |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB118969A (en) * | 1918-01-05 | 1918-09-19 | Mark Fryar | Improvements in Pit Props. |
| GB2081340B (en) * | 1980-07-22 | 1984-07-25 | Brown Allan Henry George | Deformable mine prop |
| GB2080364A (en) * | 1980-07-22 | 1982-02-03 | Hunt Leuchars & Hepburn Ltd | Mine support prop |
| GB2149440A (en) * | 1983-08-25 | 1985-06-12 | Botha Raymond Berkley | Mine prop |
-
1983
- 1983-11-28 ZA ZA838848A patent/ZA838848B/xx unknown
-
1984
- 1984-04-24 AU AU27204/84A patent/AU575047B2/en not_active Ceased
- 1984-04-24 CA CA000452624A patent/CA1216434A/en not_active Expired
- 1984-04-25 EP EP84302769A patent/EP0160133A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| AU575047B2 (en) | 1988-07-21 |
| AU2720484A (en) | 1985-10-31 |
| CA1216434A (en) | 1987-01-13 |
| EP0160133A1 (en) | 1985-11-06 |