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The simply screw has been around forever. Sure, there are lots of drawbacks: “Concrete cracks when it is punctured by a screw. Plastic creeps away from the pressure, sliding down the threads so that even a tightened screw loosens almost instantly.” But Kenneth LeVey, a product development director at Illinois Tool Works, has come up with a new twist on the 2,000-year-old screw.

Posted by edelfenbein at September 15, 2005 1:44 PM