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US 11,473,605 B2Granted
Preload controlled stud lockbolt
AssigneeHowmet Aerospace Inc.
InventorsThomas Brennetot, Arnaud Brunet, Christophe Coulon
Life of this patent
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Abstract
A fastener including a pin member having a shank portion, a threaded portion having a thread, a lock portion having at least one lock groove, and a pull portion located having at least one pull groove. The threaded portion is adapted to be engaged threadedly with a threaded hole of a workpiece to install the pin member therein. The fastener includes a swage collar adapted to be installed into the at least one lock groove of the lock portion to secure a plurality of workpieces. The pull portion is adapted to break off when the fastener is installed.
Claims11
A fastener, comprising:
- a pin member including an elongated shank portion having a first end, a second end opposite the first end, a smooth cylindrical shank portion having a first end and a second end opposite the first end of the smooth cylindrical shank portion, a threaded portion located adjacent to the first end of the smooth cylindrical shank portion and proximate to the first end of the elongated shank portion and having a thread, a lock portion located adjacent to the second end of the smooth cylindrical shank portion and having at least one lock groove, and a pull portion located at the second end of the elongated shank portion and having at least one pull groove,
- wherein the lock portion of the pin member includes an annular stop located at one end thereof and proximate to the pull portion of the pin member, wherein the annular stop includes an outer diameter that is greater than an outer diameter of the remainder of the elongated shank portion;
- and
- a collar received on the lock portion, wherein the annular stop acts as a physical stop for the collar.
1 more element
Dependencies are inferred from the claim text.