Tubular mining bolt
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 7, 1995
Grant Date -
N/A
app pub date -
Mar 26, 1993
filing date -
Mar 26, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention is a system for supporting rock within a mine having a bore hole. The system comprises a mining bolt having a round metal tube which has a completely hollow interior and all cross sectional dimensions less than that of the bore hole. The metal tube has a first end and a second end which are swaged closed to permanently close off the completely hollow interior so the bolt can crush and deform during movement of the rock when in place therein. The swaged second end has a square cross section to allow a tool to turn the mining bolt in the bore hole from the second end. The mining bolt has a metal washer flange fixedly attached to the metal tube adjacent to the swaged second end. The system also comprises a bearing plate disposed between the rock and the flange and a resin cartridge for bonding the mining bolt to the rock within the bore hole. The metal tube has spiral ribbing disposed on the outer surface to mix resin from the resin cartridge as the mining bolt is turned in the bore hole from the swaged second end.
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