Patent ID: 7770766

Claim:
A rucksack comprising a bag having a back panel, a belt assembly and a rigid frame secured to the back panel and the belt assembly, wherein the bottom portion of the rigid frame has a V-shaped configuration with furthest-apart edges having an angle α at the apex, and in its middle and rear portion, the belt assembly includes an upwardly open pocket having a V-shaped configuration with an inside side edge of angle β at the apex, where β is greater than α, such that said pocket is suitable for serving as a housing for receiving the V-shaped bottom portion of the frame while allowing the belt assembly to pivot angularly relative to the remainder of the rucksack, the inside edges of the upwardly open pocket coming into abutment against the furthest-apart edges of the bottom portion of the rigid frame in order to prevent pivoting beyond an angle γ equal to (β-α)/2.