Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 23, 2016
Patent Application Number
13579631
Date Filed
January 31, 2011
Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention provides a device useful for supporting underground mine/tunnels. The device continuously monitors the roof load coming over the canopy and correspondingly yielding/convergence indicated by the pointer on graduate scale. The roof load coming on the canopy (9) is transmitted to the prop via a set of steel disc springs (5) to increase the yielding and longevity of the present device. The present invention has mechanism for preloading upto the desired load. It is a simple, easily transportable and user friendly device having quick release mechanism from a safe distance.
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