Patent ID: 8784024

Claim:
A pull-up bolt assembly adapted to be used for frictionally supporting a high-weight structure to a hinge component using an opening or recess in the high-weight structure, the bolt assembly comprising: a pull-up bolt member having a threaded shaft with a first shaft end and a second shaft end, and an abutting member with a tapered surface formed at the first shaft end, the abutting member being wider than and tapering toward the threaded shaft; a nut component with an external torque-applying surface threadably connected to the threaded shaft; a tapered member with a tapered end portion, a flange formed between the external torque-applying surface of the nut component and the tapered end portion and a cylindrically-shaped portion between the tapered end portion and the flange wherein the tapered end portion faces toward the tapered surface of the abutting member; and an expandable friction member disposed around the threaded shaft between the abutting member and the tapered member whereby the expandable friction member expands when the nut component is threadably moved toward the abutting member of the pull-up bolt member.