A blind moving device to hold work pieces that have an accessible surface and an unacceptable surface. (Machine-translation by Google Translate, not legally binding)

摘要

A blind fastener device for holding work pieces having an accessible surface and an inaccessible surface, with openings aligned therethrough, and ranging in total thickness from a predetermined minimum to a predetermined maximum, comprising: a tubular sleeve member; a traction pin disposed within said sleeve member; said pin having a head at one end intended to be applied to one end of said sleeve; said sleeve including an end provided with flange facing said end, intended to be applied to the accessible surface of the workpiece; said sleeve further including a tubular body portion of a predetermined length extending from said flanged end inside said body portion having a uniform outer diameter along its length; said sleeve having an intermediate segment with a uniform internal diameter and a recessed portion adjacent said uniform diameter portion where the internal diameter of said sleeve gradually decreases from a maximum in said recessed part to a minimum at the end of said sleeve, adjacent to said sleeve. Said traction pin head, whereby the thickness of the wall of said sleeve gradually increases from said recessed portion to said first end to provide an end segment in said gradually increasing resistance sleeve, with at least a portion of said segment end intended to extend beyond said inaccessible surface; said traction pin including a stem extending from said head through said sleeve and including means at its rod end opposite said head to initiate a radially outward deformation in that part of said end segment of the sleeve which is immediately adjacent to said inaccessible surface, when a relative axial load is applied between said pin and said sleeve in one direction. (Machine-translation by Google Translate, not legally binding)