Patent ID: 7588386

Claim:
An adjustable support for supporting a member with respect to a base and allowing to adjust and semi-permanently lock a spatial relationship between the base and the member, comprising: A. a round driving washer with a through hole, a counterbore, a slit in a wall of the counterbore, and two prongs opposite the slit; the prongs each comprise a bottom comprising a ramp surface; B. an externally threaded jacking sleeve provided with a slot and having a convex, spherical end opposite an end with the slot, said slot comprising a pair of parallel walls wherein one of the walls is shorter than the other one of the walls; the jacking sleeve further comprising a ramp surface at each diametrical side of the slot and connecting with the shorter wall of the slot and engageable with the ramp surfaces of the prongs when the prongs disengage from the slot in a clockwise rotation, said prongs engageable with the slot in a counter clockwise direction; C. a self-adjusting round insert having a concave, cone-shaped nest on one side to accept the convex, spherical end of the threaded jacking sleeve, a through hole, and a flat round surface on the other side of the insert; D. a locking screw going through the through-hole of the driving washer, the jacking sleeve, the cone-shaped nest and the through hole of the self-adjusting round insert; and E. a captive nut engageable with the locking screw.