Method and apparatus for knock out feature in brittle material
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United States of America Patent
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Mar 4, 2014
Grant Date -
Nov 17, 2011
app pub date -
May 18, 2011
filing date -
Oct 7, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A master electrical insulation barrier panel for use in a switchgear arrangement. The master electrical insulation barrier panel includes a plurality of optionally removable knock-out features, wherein each of the knock-out features has a peripheral edge. The peripheral edge includes a plurality of snapable tabs, wherein each snapable tab is separated by an opening configured to create a breakable weak link in a non-electrically conductive brittle material used for fabricating the master electrical insulation barrier wherein a weak link is associated with each of the optionally removable knock-out features. In addition, each of the optionally removable knock-out features corresponds to an optional opening for at least one possible electrical connection, such that at least one knock-out feature can be optionally removed from the master electrical insulation barrier panel during installation of the master electrical insulation barrier panel to create the optional opening for at least one electrical connection.
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