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US 12,129,881 B2Granted
Preload controlled stud lockbolt
AssigneeHowmet Aerospace Inc.
InventorsThomas Brennetot, Arnaud Brunet, Christophe Coulon
Life of this patent
Estimating the term…
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.
Claims9
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 pull portion located at the second end of the elongated shank portion and having at least one pull groove, and
- a lock portion located adjacent to the second end of the smooth cylindrical shank portion,
- wherein the lock portion includes
- at least one lock groove,
- a first end,
- a second end opposite the first end of the lock portion, and
- a first width longitudinally extending from the first end of the
- lock portion to the second end of the lock portion;
- and
- a collar,
- wherein the collar includes
- a first end,
- a second end opposite the first end of the collar, and
- a second width longitudinally extending from the first end of the collar to the second end of the collar,
- wherein the second width of the collar is equal to or greater than the first width of the lock portion.
18 more elements
Dependencies are inferred from the claim text.