Shutter curtain lifting prevention structure in shutter device
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United States of America Patent
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-
N/A
Issued Date -
Jun 14, 2007
app pub date -
Sep 28, 2004
filing date -
Oct 30, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A shutter curtain lifting prevention structure comprises a shutter curtain formed by connecting a plurality of slats via an interlock portion in the vertical direction, guide rails standing on both sides of an opening of the construction, and a cutout recess being integrally formed at the guide groove of each guide rail. The cutout recess is formed by horizontally cutting out the interior side plane portion of the front face located above and in the vicinity of the floor surface, such that when a bottom plate of the shutter curtain kept in a shut state is lifted, a connection portion of the bottom plate and the slat, which is opposed to the cutout recess is made engaged by the engaging portion defined by the cutout recess, thus preventing lifting of the shutter curtain.
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