Roof support unit
Patent
·
OSTI ID:6505813
A roof support unit for use in a mineral mining working has a roof shield supported on a floor sill by means of at least two hydraulic props. A goaf shield is pivotally linked to both the roof shield and the floor sill. At least one of the hydraulic props is inclined towards the face-side of the unit and engages the roof shield. At least one of the hydraulic props is inclined towards the goaf-side of the unit and engages the roof shield.
- Assignee:
- Gewerkschaft Eisenhutte Westfalia (Germany, Federal Republic Of)
- Patent Number(s):
- US 4231685
- OSTI ID:
- 6505813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mine roof supports
Seals for mine roof supports
Mine roof support assemblies
Patent
·
Mon Dec 26 23:00:00 EST 1983
·
OSTI ID:6930723
Seals for mine roof supports
Patent
·
Tue Oct 06 00:00:00 EDT 1981
·
OSTI ID:5934296
Mine roof support assemblies
Patent
·
Mon Feb 13 23:00:00 EST 1978
·
OSTI ID:5103427