Lower end fitting locknut for nuclear fuel assembly
Number of patents in Portfolio can not be more than 2000
United States of America
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Apr 19, 2022
Grant Date -
Feb 28, 2019
app pub date -
Sep 27, 2018
filing date -
Sep 27, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus including a lower end fitting having a top planar surface, a bottom planar surface, a counterbore defined therebetween, an opening extending from the counterbore to the top planar surface, and a lock recess that extends both radially outwardly from the counterbore and extends inwardly into the lower end fitting from the bottom planar surface. The apparatus includes a guide tube having a lower end and an end plug configured to connect with the lower end of the guide tube. The end plug has a threaded shaft sized to pass through the opening of the lower end fitting, and a female lock nut has a deformable side wall configured to be swaged into the recess of the lower end fitting. The lock recess remains visible as viewed from the bottom planar surface of the lower end fitting when the female lock nut is fully disposed in the counterbore.
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