Package and article carriers – Carried by animate bearer – Article held by receiver
Reexamination Certificate
2002-03-05
2004-02-03
Weaver, Sue A. (Department: 3727)
Package and article carriers
Carried by animate bearer
Article held by receiver
C224S645000, C224S657000
Reexamination Certificate
active
06685072
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a knapsack, more particularly to a knapsack which can be produced at a relatively low cost, which permits air ventilation when carried on a user's back, and which can massage the user's back.
2. Description of the Related Art
Conventional knapsacks are mostly made from fabric or polyurethane rubber materials in order to provide comfort during use. While such knapsacks permit air ventilation and are comfortable when placed in contact with a user's back due to their softness, these materials are relatively expensive. Moreover, these knapsacks require hard support boards placed therein or supportive reinforcement strips formed therearound in order to prevent the contents from being damaged or piled up disorderly and the deformation of the knapsacks. In addition, since such knapsacks require extra time for sewing, the production costs are increased as well. Furthermore, damaged or broken knapsacks that are made from fabric or polyurethane rubber materials could not be easily recycled. Hence, a serious problem in environmental protection arises therefrom.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to provide a knapsack which can be produced at a relatively low cost, which permits air ventilation when carried on a user's back, and which can massage the user's back.
A knapsack according to this invention comprises a sack body defining an accommodation space for receiving articles therein, and including a back wall which has a front wall surface confronting said accommodation space, and a rear wall surface opposite to the front wall surface and adapted to face toward a user's back; and a plurality of spacers which are disposed on said rear wall surface, which are spaced apart from each other, and which extend away from said front wall surface so as to space said rear wall surface apart from the user's back, said spacers being molded integrally with said back wall to form a single-piece construction.
REFERENCES:
patent: 5361955 (1994-11-01), Gregory
patent: 5573155 (1996-11-01), Sadler
patent: 5588569 (1996-12-01), Mitomi et al.
patent: 5894977 (1999-04-01), Krueger et al.
patent: 5911348 (1999-06-01), Shook
patent: 19526764 (1997-01-01), None
patent: 2646998 (1990-11-01), None
Ho Chin-Lien
Merchant & Gould P.C.
Weaver Sue A.
LandOfFree
Knapsack having a back wall formed with spacers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Knapsack having a back wall formed with spacers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Knapsack having a back wall formed with spacers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3307813