초록 ▼

A system for backpacks that allows the backpack to be worn comfortably without shoulder straps. This is accomplished with a pair of generally triangular shaped flaps that are attached to the pack at symmetrical locations, typically the front or rear corners. The free edges of the flaps approximate c

A system for backpacks that allows the backpack to be worn comfortably without shoulder straps. This is accomplished with a pair of generally triangular shaped flaps that are attached to the pack at symmetrical locations, typically the front or rear corners. The free edges of the flaps approximate catenary curves. Adjustable-length straps connect the apex of each flap to the backpack waistbelt. The flaps distribute tension relatively evenly along a substantial portion of the height of the packbag or frame, which pulls the packbag more tightly against the wearer\s back, so that it can be worn comfortably without shoulder straps. The system may also be used with shoulder straps in order to lessen the stress on the user\s shoulders.

대표청구항 ▼

A backpack suspension system adapted to firmly hold a packbag or frame of a backpack against the wearer\s back and hips, the backpack including a waistbelt for encircling the wearer\s torso, the suspension system comprising: a pair of load transfer means each defining a generally polygonal shape wit

A backpack suspension system adapted to firmly hold a packbag or frame of a backpack against the wearer\s back and hips, the backpack including a waistbelt for encircling the wearer\s torso, the suspension system comprising: a pair of load transfer means each defining a generally polygonal shape with a plurality of edges, and each defining a longest edge, said load transfer means each attached along their longest edge along a substantial portion of the height of the packbag or frame and at symmetrical locations of the packbag or frame, respectively, leaving free edges not attached to the packbag or frame, in which said load transfer means are each spaced from the waistbelt; and a pair of adjustable-length members, each attached to a said load transfer means and to the waistbelt, for allowing adjustment of the spacing between each said load transfer means and the waistbelt; wherein at least one free edge of each said load transfer means describes a concave curve approximating a catenary, so that said load transfer means distribute tension from said waistbelt along a substantial portion of the height of the packbag or frame to hold the packbag or frame, along its height, more firmly against the wearer\s back and hips.