Spacer grids with springs having improved robustness
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United States of America Patent
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Jan 30, 2018
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N/A
app pub date -
Jan 21, 2013
filing date -
Apr 17, 2012
priority date (Note) -
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Abstract
A spacer grid includes intersecting straps defining cells with springs and dimples arranged to hold fuel rods passing through the cells. The springs are dual cantilevered springs with a bridge section between the distal end of the spring and the base. The distal portion of the spring is less stiff than the bridge section. The bridge section creates a bump which acts as a stop or travel limiter to prevent loss of grip force due to excessive spring deflection.
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