Friction stabilizers and roof bolt head markings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 24, 2010
Grant Date -
Feb 11, 2010
app pub date -
Aug 6, 2008
filing date -
Aug 6, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A roof stabilizer for use in securing surfaces in tunneling and mining is disclosed and claimed. The stabilizer has a tube with a slot and a ring attached to the bottom end of the tube. The ring can have indicia on a bottom surface of the ring or a side surface of the ring or both. The location of the indicia can provide better indication of the properties of the stabilizer to the installer. The indicia is easier to read than that of the background art both before and after installation. The location of the indicia can also provide easer and quicker visual inspection of already installed stabilizers to verify that the proper roof stabilizers were installed. The location of the indicia lessens the likelihood that corrosion will remove the indicia making it unidentifiable. The stabilizer disclosed and claimed also allows the use of grout or an adhesive in the interior of the tube which does not cover up or conceal the indicia on the ring as opposed to indicia in the background art stabilizers. Also disclosed are various locations and methods for placing indicia on the heads of roof bolts. Such indicia locations and methods for placement also aid in the pre and post installation and inspection of roof bolts to provide easier verification that devices with the correct properties were installed.
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Cited Art Landscape
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