Hole roughening device and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 4, 2002
Grant Date -
N/A
app pub date -
Sep 8, 2000
filing date -
Sep 8, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention comprises a drilling tool for attachment to conventional drilling means, which roughens the internal surface of a pre-drilled hole to enhance attachment of an anchoring device and adhesive placed therein. The roughening device has a shaft for attaching to a conventional drilling device at one end and a tubular side wall bearing cutters/abraders at the other. There is a void between the shaft and the side wall which is filled by an elastomeric material which cushions the action of the cutters/abraders.
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