Abstract: A drive apparatus includes a rotatable threaded shaft disposed between a first member movably mounted with respect to a stationary second member. A housing having a freely movable leg is fixedly mounted to the second member, with the free leg movably extending into an aperture in the second member. A plastic drive block threadingly engaged with the threaded shaft is mounted within the housing. A cushion member is coupled to the drive nut and resiliently supports the drive nut in the housing. Axial forces exerted on the threaded shaft cause deformation of the side leg of the housing into direct contact with the lead screw to form a metal to metal path between the lead screw and the second member through the housing.

Abstract: An adjustable expansion pivot rivet for connecting a movable member to a fixed member having a cylindrical exterior surface, a hollow interior portion with a terminating portion and a solid interior portion such that the hollow interior portion extends through the fixed member and the terminating portion and solid interior portion extends into the movable member, the hollow interior portion expanding in the hole of the fixed member to fill therein, and the termination portion and solid interior portion defining a gap forming a reservoir for lubricant in the movable member.