Alcoa Inc.

Arconic Corporation

Howmet Aerospace Inc.

Randy Torrence

Gerhart Hufnagl

Douglas DeSalvo

Rodrigo Pinheiro

Gilbert Lee

Thomas Brennetot

Arnoldo Gutierrez

Douglas Desalvo

A fastener includes a sleeve, a core bolt, and an insert. The sleeve includes a first portion having a first inner diameter, a second portion having a second inner diameter, and a step intermediate the first and second portions. The core bolt includes a cylindrical portion having a first diameter, a threaded portion having a major diameter, and a thread run-out intermediate the cylindrical and threaded portions. The insert is disposed within the sleeve and is sized and shaped to be retained between the step of the sleeve and the thread run-out of the core bolt when the fastener is in a pre-installation position. The fastener compresses the insert between the step of the sleeve and the thread run-out of the core bolt by an installation motion of the core bolt. The insert deforms away from the core bolt to initiate formation of a bulb in response to the compression.

Blind fasteners

A rivet includes a pin member having a head and a lock groove, and a lock ring having a flange. The flange of the lock ring is swaged into the lock groove of the pin member and transformed to a bead that engages the lock groove, and a portion of an outer surface of the lock ring deforms and is rotated inwardly. The rivet is installed within a structure such that the head of the pin member is flush with an outer surface of a panel and the portion of the outer surface of the lock ring is flush with an outer surface of another panel. The pin member includes a frangible portion that breaks off when the rivet is installed.

Rivet

A fastener installation tool including an upper jaw having a head adapted to engage a fastener for securing a plurality of workpieces to one another, a lower jaw, and first and second pairs of links fastened to the upper and lower jaws. The tool includes a hydraulic cylinder having one end attached to the lower jaw and a piston rod attached to the first pair of links. The cylinder actuates the tool between a disengaged position, in which the links are in a retracted position and the upper jaw and the lower jaw are juxtaposed with one another, and an engaged position, in which the links are in an extended position and the upper jaw and the lower jaw are spaced apart from one another. The tool is adapted to install the fastener to the workpieces when the tool is in its engaged position.

Fastener installation tool

Growing community of inventors

Tucson, AZ, United States of America

Randy Torrence