CONVERTIBLE KNAPSACK Russian patent published in 2000 - IPC

FIELD: travelling equipment. SUBSTANCE: knapsack has basic soft module, shoulder strips attached to basic module, and at least one patch pocket joined to basic module by means of built-up zipper fastener. Zipper fastener has at least two similar zippers, with one zipper fixed to basic soft module and other zipper attached to patch pocket. Each half of zipper on basic module is mated with respective half of zipper on patch pocket. Such construction allows volume of basic module to be reduced, patch pockets to be attached and connected one with the other for obtaining closed spaces. EFFECT: wider operational capabilities, simplified construction and convenient usage. 4 dwg