Patent ID: 7637706

Claim:
A fastener to secure a threaded tie rod to a machine part, said fastener including the combination of: a circular ring being half divided along a plane intersecting a central longitudinal axis uniformly spaced from an internal thread between oppositely directed end walls, one of said end walls having a truncated conical load bearing surface defined with a projected apex intersecting said central longitudinal axis; said circular ring comprising half divided components; bolts for clamping the half divided components of said circular ring along axes extending tangential to said central longitudinal axis; a shim clamped by said bolts between opposing face surfaces formed by said half divided components of said circular ring; and a hollow cylinder having a central longitudinal axis in alignment with said central longitudinal axis of said circular ring and having an end wall containing a truncated conical thrust surface arranged to present a conjugate pair of truncated conical surfaces with said truncated conical load bearing surface of said circular ring, said truncated conical thrust surface of said hollow cylinder being outwardly surrounded by a cylindrical stress generator body section containing a stress generator operative to generate a pre-stressing force extending parallel with said central longitudinal axis of said hollow cylinder whereby said conjugate pair of truncated conical surfaces resolve the force parallel to said central longitudinal axis generated by said stress generator toward a machine part to provide a first component force directed radial inward toward said central longitudinal axis for urging said internal thread of said circular ring toward a mating thread on a tie rod when in said circular ring and provide a second component force directed parallel to said central longitudinal axis to apply tension to said tie rod.