Unitary composite backpack frame with upper stays
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United States of America Patent
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Aug 4, 2015
Grant Date -
Aug 29, 2013
app pub date -
Apr 4, 2013
filing date -
Jul 16, 2010
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Abstract
Resin-impregnated sandwich composite backpack frames are disclosed. The frames may, for example, be made of a carbon fiber twill with a foam core. The frames have an upper portion that includes upwardly-extending, elongate stays to support a backpack and mechanically decouple its load from the wearer. Open, generally vertically extending tracks in the upper portion provide points of attachment for shoulder strap assemblies. The lower portion is contoured to follow the typical lumbar-sacral curvature of the human back and terminates in a generally U-shaped tongue. Openings and unreinforced areas in the frame are provided to reduce weight and increase flexibility.
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