Patent ID: 8172117

Claim:
A backpack comprising: a. a container; b. a frame; c. a hip belt, said hip belt comprising a buckle; d. a horizontal spring hip bar; e. a first vertical support rod; f. a second vertical support rod; g. a horizontal pivot shoulder bar; and h. a horizontal pivot shoulder bar channel; wherein: i. said container is mounted on said frame; j. each end of said horizontal spring hip bar is pivotally attached to said hip belt; k. the center of said horizontal spring hip bar is pivotally attached to said frame at about the centerline of said frame; l. said horizontal pivot shoulder bar passes through said horizontal pivot shoulder bar channel; m. said horizontal pivot shoulder bar is pivotally attached to about the center line of said frame such that the ends of said horizontal pivot shoulder bar may move in alternate vertical directions; n. said horizontal pivot shoulder bar channel is horizontally attached to said frame; o. the ends of said horizontal pivot shoulder bar extend beyond the sides of said frame; p. the top of said first vertical support bar is pivotally attached to one end of said horizontal pivot shoulder bar; q. the top of said second vertical support bar is pivotally attached to the other end of said horizontal pivot shoulder bar; r. the bottom of said first vertical support bar is pivotally attached to one end of said horizontal spring hip bar; and s. the bottom of said second vertical support bar is pivotally attached to the other end of said horizontal spring bar.