BLIND, BULBING, TACKING RIVET AND METHOD OF INSTALLATION

摘要

A tacking fastener for securing workpieces together to form a temporary assembly is provided that includes a stem and a sleeve. The stem includes a proximal end portion, a central portion, and a distal end portion. The stem further includes a head disposed at the proximal end portion, the head defining a distal face having a gripping feature. The sleeve includes a flange disposed at the distal end portion, the flange defining a proximal face having a gripping feature. The sleeve is disposed around the stem and configured to form a tacking rivet upon installation of the tacking fastener. The sleeve is plastically deformed during installation to form a plurality of bulbs, thereby being capable of securing workpieces of varying grip length. The stem and the tacking rivet remain within the workpieces after the workpieces are secured.

主权项

1. A tacking fastener for securing at least two workpieces together to form a temporary assembly, the tacking fastener comprising:
a stem defining a proximal end portion, a central portion, and a distal end portion, the stem comprising:
a head disposed at the proximal end portion, the head defining a distal end face having a gripping feature, and a recess extending into a proximal end of the head;a tapered portion extending proximate the central portion;a break notch extending around a circumference of the stem between the head and the tapered portion;a compression groove extending around the circumference of the stem between the head and the break notch;a plurality of ridges and grooves disposed along the distal end portion; and a sleeve disposed around the stem between the head and the plurality of ridges and grooves, the sleeve configured to form a tacking rivet upon installation of the tacking fastener, the sleeve defining a flange having a proximal face and a distal face, the proximal face defining a gripping feature and the distal face defining a diameter marking indicia,wherein the sleeve is plastically deformed during installation to form a plurality of bulbs, thereby being capable of securing workpieces of varying grip length, the stem and the tacking rivet remain within the workpieces after the workpieces are secured together, and the gripping feature of the sleeve and the stem engage the workpieces to inhibit spinning of the sleeve upon subsequent removal.