Automatic roof bolting drill retention apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 3, 1982
Grant Date -
N/A
app pub date -
Feb 29, 1980
filing date -
Feb 29, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill steel support assembly for a mining roof bolting machine is presented. The assembly is utilized for retaining and guiding a drill steel on a roof bolting machine during the collaring of the drill steel in the mine roof. Once collared, the drill steel is released by the retaining assembly inasmuch as the latter is not necessary for support purposes after collaring has occurred. The release of the drill steel from the retaining assembly is accomplished when the vibrations from the drill steel are sufficient to open the support mechanism once the drill has been collared.
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Family
International Classification(s)
Cited Art Landscape
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