US Patent 9267375 Device for roof support of underground mine/tunnel
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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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US Patent 09267375 Device for roof support of underground mine/tunnel US Patent 9267375 Device for roof support of underground mine/tunnel
Infobox
Patent Number
0926737500
Patent Number
926737500
Edits on 4 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
092673750
Date of Patent
February 23, 2016
0Patent Application Number
135796310
Date Filed
January 31, 2011
0Official Website
Patent Primary Examiner
Edits on 27 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
092673750
Date of Patent
February 23, 2016
0Patent Application Number
135796310
Date Filed
January 31, 2011
0Official Website
Patent Primary Examiner
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US Patent 09267375 Device for roof support of underground mine/tunnel
Infobox
Is a
Patent jurisdiction
Patent number
09267375
Date of patent
February 23, 2016
Patent application number
13579631
Date Filed
January 31, 2011
Patent primary examiner
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