Patent ID: 7645106
Filing Date: 2010-01-12
Classification: B25B,F16B,Y10T

Abstract:
1. A self-contained thrust screw for applying force against an object, the screw comprising: a housing having a first spherical cavity opening outwardly at a first end of the housing; a ball positioned in the first spherical cavity and shaped to provide a narrowed neck portion projecting outwardly of the spherical cavity and having a flat planar surface disposed outwardly beyond the first end of the housing for applying force against the object; said narrowed neck portion arranged to abut said housing at said first end thereof to limit pivotal movement of the ball in the spherical cavity; wherein the ball is interferingly retained in the first spherical cavity with a retention element positioned in a groove therein so that the ball is movable; wherein the flat planar surface is a cone-head having a diameter larger than a diameter of the ball; wherein the ball is rotatable within the housing; wherein the ball is pivotable within the housing; wherein the first spherical cavity includes a lubricated spherical seat for accommodating the rotation of the ball; wherein the housing includes a second cavity opening outwardly at a second end of the housing for receiving a device for turning the housing; and wherein the second cavity is a hexagonal broach for receiving the device for turning the housing.