Threaded fastener assembly

Abstract

The fastener assembly comprises a torquing member and a clamping pressure member assembled together on a common access. The torquing member has annual threads formed around the axis. An annular bearing surface extends around the axis on one end of the member. The clamping pressure member has an annular bearing surface formed around the axis on one end and an annular clamping surface extending around the axis on an opposite end. The annular bearing surface of the torquing member includes a first series of helically inclined surface segments having substantially the same pitch axis as the threads and a second series of helically inclined surface segments having the same pitch axis as the threads but a pitch equal to or greater than that of the threads, with an opposite incline. The annual bearing surface on the clamping pressure member includes a first series of helically inclined surface segments having substantially the same pitch axis as the threads, and a second series of helically inclined surface segments having substantially the same pitch and direction as said equal or greater pitch. Helically inclined bearing surfaces on the torquing member and the clamping pressure member engage each other in locking relationship.

Dependencies are inferred from the claim text.