Roof bolt anchor with camming element
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United States of America Patent
Stats
-
Oct 9, 2012
Grant Date -
Oct 13, 2011
app pub date -
Jun 22, 2011
filing date -
Mar 2, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bolt anchor is comprised of a camming element and sleeve. The camming element is generally cylindrical, but with a larger midsection and reduced diameters at each end. The camming element includes a threaded bore along its axis and at least one stop near one end. The sleeve has a round collar with leaves extending from the collar parallel to the axis of the collar and each other. The stop maintains the assembly of the camming element and sleeve. Prongs on the sleeve prevent the retraction or turning of the bolt anchor when a bolt is installed in a hole. Reduced material thickness associated with the leaves produces hinges which allow the leaves to be more easily deformed outwardly. Inserting a bolt and anchor assembly into the hole and turning the bolt pulls the camming element into the sleeve and creates a wedging effect in the hole.
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Family
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Cited Art Landscape
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