CA1138214A - Dispositif d'insertion de tirants, en voute de galeries de mine, sur machine d'extraction miniere - Google Patents
Dispositif d'insertion de tirants, en voute de galeries de mine, sur machine d'extraction miniereInfo
- Publication number
- CA1138214A CA1138214A CA000391791A CA391791A CA1138214A CA 1138214 A CA1138214 A CA 1138214A CA 000391791 A CA000391791 A CA 000391791A CA 391791 A CA391791 A CA 391791A CA 1138214 A CA1138214 A CA 1138214A
- Authority
- CA
- Canada
- Prior art keywords
- canopy
- mining machine
- section
- mast
- roof
- 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
- 238000005065 mining Methods 0.000 title claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 6
- 239000004519 grease Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- STECJAGHUSJQJN-USLFZFAMSA-N LSM-4015 Chemical compound C1([C@@H](CO)C(=O)OC2C[C@@H]3N([C@H](C2)[C@@H]2[C@H]3O2)C)=CC=CC=C1 STECJAGHUSJQJN-USLFZFAMSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000391791A CA1138214A (fr) | 1978-12-26 | 1981-12-08 | Dispositif d'insertion de tirants, en voute de galeries de mine, sur machine d'extraction miniere |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/972,759 US4297057A (en) | 1978-12-26 | 1978-12-26 | Pivotal roof bolter and extendable rotatable protective canopy for mining machine |
| US972,759 | 1978-12-26 | ||
| CA000340255A CA1158448A (fr) | 1978-12-26 | 1979-11-20 | Dispositif d'ancrage au plafond et ecran protecteur deployable pour machine d'abattage du charbon |
| CA000391791A CA1138214A (fr) | 1978-12-26 | 1981-12-08 | Dispositif d'insertion de tirants, en voute de galeries de mine, sur machine d'extraction miniere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1138214A true CA1138214A (fr) | 1982-12-28 |
Family
ID=27166497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000391791A Expired CA1138214A (fr) | 1978-12-26 | 1981-12-08 | Dispositif d'insertion de tirants, en voute de galeries de mine, sur machine d'extraction miniere |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1138214A (fr) |
-
1981
- 1981-12-08 CA CA000391791A patent/CA1138214A/fr not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |