Reinforcing rings for honeycomb panels and method and apparatus for making them
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United States of America Patent
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-
May 7, 1991
Grant Date -
N/A
app pub date -
Nov 25, 1988
filing date -
Nov 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ring insert for locally reinforcing a panel having a honeycomb core and at least one face sheet. The ring insert has at least two adjacent corrugated foil strips wound with the surface of the strips (and the corrugations) lying substantially perpendicular to the ring axis. The corrugations in adjacent strips have substantially different corrugation curve periods to prevent nesting of the corrugations of one strip into those of the next strip. The strips are bonded together to form a unitary ring. These inserts are adapted to be placed in cut-outs of corresponding shape in a honeycomb core and to be bonded thereto and to the panel face sheets. A method and an apparatus for winding the coil are also disclosed.
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