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US 12,025,170 B2Granted
Apparatus for a burst-through torque indicator
AssigneeIllinois Tool Works Inc.
InventorsAlbert James Dapoz, Nicholas Quincy
Life of this patent
Estimating the term…
Abstract
A nut is configured to be secured to a bolt. The nut includes a main body that defines an axially aligned bore with threads disposed on an inner wall thereof. Further, the nut includes a dome-shaped head that has an axially aligned aperture and that is provided to be deformed by threads on the bolt when a predetermined burst-through torque is applied thereto.
Claims16
A nut configured to couple to a bolt, the nut comprising:
- a main body defining an axially aligned bore and including a first end, a second end, and threads disposed on an interior wall thereof;
- and
- a continuous dome-shaped head disposed at the second end thereof having an axially aligned aperture with an aperture diameter that is smaller than a bore diameter of the axially aligned bore,
- wherein a beveled portion is disposed between a neck and the second end of the main body,
- wherein the neck is formed integrally between the beveled portion and the continuous dome-shaped head, the neck having an outer diameter D′ that is uniformly cylindrical and extending parallel to an axis A of the nut for a height H,
- wherein the continuous dome-shaped head is provided to be deformed by threads disposed on the bolt when a predetermined burst-through torque is applied thereto,
- wherein the aperture diameter of the axially aligned aperture is inversely related to the predetermined burst-through torque,
- wherein the axially aligned aperture is deformed by the threads of the bolt at a burst-through point, and
- wherein the deformed nut is rotated beyond the burst through point by an expected number of revolutions around the bolt to provide a proper fitting.
6 more elements
A nut configured to couple to a bolt, the nut comprising:
- a flange, the flange having an outer diameter D;
- a main body defining an axially aligned bore having threads disposed on an interior wall thereof;
- and
- a continuous dome-shaped head disposed at an outermost end thereof and having an axially aligned aperture with an aperture diameter,
- wherein the continuous dome-shaped head is provided to be deformed at a burst-through point by threads disposed on the bolt when a predetermined torque is applied thereto,
- wherein a neck is formed integrally between the main body and the continuous dome-shaped head, the neck being uniformly cylindrical and extending parallel to an axis A of the nut for a height H, the neck having an outer diameter D′ that is smaller than the outer diameter D of the flange;
- wherein a beveled portion is disposed between the neck and the second end of the main body,
- wherein the axially aligned aperture is deformed by the threads of the bolt at a burst-through point, and
- wherein the deformed nut is rotated beyond the burst through point by an expected number of revolutions around the bolt to provide a proper fitting.
6 more elements
Dependencies are inferred from the claim text.