Versatile roof bolt assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 3, 1987
Grant Date -
N/A
app pub date -
Feb 3, 1986
filing date -
Feb 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The anchor bolt assembly is of the type used in mine roofs and the like in which the anchor bolt assembly is positioned in a bore hole of a rock formation. The bolt assembly includes an elongated shaft having a frustoconical shaped plug at the upper end of the shaft and a head on the lower end of the shaft. A quick-setting resin cartridge is positioned in the bore hole above the plug of the bolt shaft and the bolt assembly is secured to the rock formation by at least the resin. The anchor assembly includes a helical coil external of, surrounding and connected to the bolt shaft for mixing the resin and urging it upward toward the plug end while the bolt shaft is rotated in one continuous direction. The helical coil is disposed below the conical plug and extends a substantial length along the bolt shaft to achieve the mixing.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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