Merchant & Gould, P.C.
Knapsack having a back wall formed with spacers
A knapsack is made of a hard thermoplastic material and is molded into a single-piece construction. The knapsack has a rear wall surface facing toward a user's back and formed with a plurality of spacers to result in a spacing between the rear wall surface and the user's back. As a result, the knapsack does not attach closely to the user's back and, therefore, permits air ventilation and can provide a massaging effect.
A A A
A45F A45F A45F
inventional additional additional
Chin-Lien
Ho