Recess drive bone screw and cooperable driving tool
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 25, 2000
Issued Date -
N/A
app pub date -
Dec 21, 1998
filing date -
Feb 28, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fastener with a recessed drive socket and a driving tool with a cooperable driving head. The socket having a cylindrical interior wall interrupted by a plurality of driving corners. The driver having a tapered driving head including a plurality of sharpened driving edges adapted to engage the driving corners. The tapered driving end may be axially forced into the driving socket such that the plurality of driving edges frictionally engage the driving corners to hold the fastener on the driver and to enhance torque transmission. The cylindrical walls of the socket and the walls of the driver bit between the driving edges cooperate to define a fluid channel for passage of fluid around the driving head during positioning within the socket.
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