Hex Wrench Having Greater Strength
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United States of America Patent
Stats
-
N/A
Issued Date -
Jun 30, 2011
app pub date -
Dec 29, 2009
filing date -
Dec 29, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A hex wrench includes a handle (21) and a head (22) connected with the handle. The handle has a surface provided with a first twist portion (212) which has an axis that is not parallel with the axis of the handle, and the head has a surface provided with a second twist portion (222) which has an axis that is not parallel with the axis of the head. Preferably, each of the first twist portion and the second twist portion has a helical profile to conform to the torsional shear stress applied by the hex hole screw during operation of the hex wrench so that the hex wrench has greater strength and stiffness without reducing its malleability so as to prevent the hex wrench from being cracked or broken due to an excessive applying force.
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