Abstract: A glide bearing for guiding axial movement between inner and outer telescoping columns may include first and second spaced apart contact surfaces, and a resilient wall extending therebetween and having an outer convex surface defining an apex. A span between the apex and a plane defined between the first and second contact surfaces is greater than a width of a space between the outer surface of the inner column and the inner surface of the outer column. The glide bearing is configured to be disposed within the space with the first and second contact surfaces contacting the outer surface of the inner column, with the apex contacting the inner surface of the outer column and with the resilient wall deflecting inwardly toward the plane to accommodate the space in response to a force of the inner surface of the outer column acting against the apex.

Abstract: A glide bearing for guiding axial movement between inner and outer telescoping columns may include first and second spaced apart contact surfaces, and a resilient wall extending therebetween and having an outer convex surface defining an apex. A span between the apex and a plane defined between the first and second contact surfaces is greater than a width of a space between the outer surface of the inner column and the inner surface of the outer column. The glide bearing is configured to be disposed within the space with the first and second contact surfaces contacting the outer surface of the inner column, with the apex contacting the inner surface of the outer column and with the resilient wall deflecting inwardly toward the plane to accommodate the space in response to a force of the inner surface of the outer column acting against the apex.

Abstract: The present invention is directed to a threaded insert having an internal threaded surface and an external threaded surface. The threaded surfaces have threads that are threaded in opposite directions. Thus, if the internal threaded surface is a right handed thread, then the external threaded surface will be a left handed thread. Through the use of the opposite direction threads the insert counteracts torque applied to a threaded fastener as it is inserted or removed. This results in a threaded insert that both resists over tightening of the fastener, and assists in the removal of the fastener from the insert.