Patent ID: 6572315
Filing Date: 2003-06-03
Classification: F16B

Abstract:
A fastener, comprising, in combination:a shaft having a first end including means to rotate said shaft, said shaft having a thread projecting from an outer periphery of said shaft and spiraling along its length, said thread defined by an upper flank, a lower flank, a root adjacent said shaft and a crest remote from said shaft, said thread defining a dovetail when viewed in section such that said upper and lower flank of one dove tail section diverge outwardly from each other away from said root, said fastener received within a bore having a general contour complemental to said fastener, said lower flank of said thread having a pitch which varies along said thread, said upper flank of said thread having a pitch which does not vary along said thread whereby non-uniform loading occurs on at least one said flank.