Patent ID: 7931178
Filing Date: 2011-04-26
Classification: A45F,F03G

Abstract:
1. A suspended load backpack, comprising: shoulder straps; means for accepting a load to be carried by said backpack on a wearer's back; and a suspension system mounted on the wearer's back between the shoulder straps and the load accepting means and that has a first portion connected directly or indirectly to said shoulder straps and a second portion connected to said load accepting means, said suspension system incorporating a compliant mechanism that permits said second portion of said suspension system and said load accepting means to move up, relative to said first portion of said suspension system, when a gait of a wearer of the backpack causes the first portion to move downward relative to the ground and to move down, relative to the first portion of said suspension system, when the gait of the wearer of the backpack causes the first portion of said suspension system to move upward relative to the ground, thereby reducing up and down motion of the load relative to the ground and accelerative forces during the gait of the wearer of the backpack, wherein a natural frequency of said compliant mechanism with said load is below a stepping frequency of the wearer of the backpack so as to reduce resonance.