Backsack

Abstract

A backsack (48) comprises a bag (51 ), a strap (30), a pair of robust ring spring clips (38, 66) and generally four pellets (26, 28). The bag is folded and glued of a single sheet of printable paper-like, yet high-strength material to have side gussets (55) and a flat bottom (52). The flat bottom (52) comprises folded and glued flaps (21, 23) which advantageously form corner pockets (22). The top of the bag is turned (87), with reinforcements affixed under the cuff. Two holes (88) are punched through all four layers of the collapsed bag resulting in eight holes (88) when the bag is open. With the bag still collapsed, the strap (30) is threaded through one of the two holes, back through the other, and serves as a closure at the top, leach of the two equal length portions of the strap (30) emerges from its hole and loops down to form shoulder loops. A pellet (28) is placed into each bottom corner pocket (22). The coils of the pair of ring spring clips (40, 42 and 68, 70) are pried apart with a tool (34). Each corner with its pellet within (27) is inserted between the open coils, and the tool (34) is withdrawn, allowing the coils to close, trapping the pellets (28) along with the bag corners (27) within its open center (44). The straps can be attached to the opposite side of the coils using the same pellet method, or by other methods. An alternative combination clip provides cinch-type strap adjustability. Backsacks can be made to have one or two straps for one or two shoulder use, and an auxiliary (80) or integral (81) waist strap, and fixed or adjustable, auxiliary or integral foul weather protection (86, 89, 90, 91, 92).

Dependencies are inferred from the claim text.