Air channel grill for security institutions
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United States of America Patent
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May 25, 2010
Issued Date -
N/A
app pub date -
Feb 11, 2005
filing date -
Oct 20, 2004
priority date (Note) -
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Abstract
A security grill for a security institution has an air inlet face, an air outlet face, and zigzag channels extending from a point adjacent the inlet face toward the outlet face. The zigzag channels are defined by slats which are bent at least twice in alternating directions. The zigzag channels are divided into segments each having a cross-sectional width. The segments adjacent the air outlet face have a cross-sectional width less than any of the other segments along the channel. The slats are bent at certain angles which are larger than those of conventional security grills. Corners are created along each slat as a result of bending the slats in alternating directions. The corners are rounded.
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