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US 2014/0265522 A1Published application
Mining methods and equipment
AssigneeSeneca Industries Inc.
InventorsTim Myers, Michael Cline, John Dickinson
Life of this patent
Estimating the term…
Abstract
Methods and equipment have been developed that combine the use of continuous miners, flexible conveyor trains, and longwall mining techniques to provide flexible and efficient removal of resources from subterranean formations.
Claims8
1-21. (canceled)
A powered roof support comprising:
- a canopy configured to directly contacts a roof of a mine;
- a base configured to rest on a floor of the mine, the base comprising a spill plate and a push cylinder with a maximum stroke greater than 11 feet;
- and
- a pair of hydraulic legs 84 attaching the canopy to the base.
1 more element
Dependencies are inferred from the claim text.