Nail with spreadable legs
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United States of America Patent
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-
Dec 23, 1997
Grant Date -
N/A
app pub date -
Aug 1, 1996
filing date -
Sep 8, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nail with spreadable legs has legs that can be spread apart by a constant angle irrespective of the hardness of the ALC material into which the nail is driven. The nail has two leg members bound together by a washer with their flat sides abutting each other. One of the leg members has a protrusion on its respective flat surface near its tip. A projection and a recess are formed on the flat surfaces of the respective leg members. With the leg members bound by the washer, the projection engages in the recess near the washer. When the nail is driven in to a predetermined depth, the projection disengages from the recess, so that the legs begin to spread apart. It is thus possible to control the spread angle of the leg members.
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