Patent Publication Number: US-2002012480-A1

Title: Waterproof bag means

Description:
BACKGROUND OF THE INVENTION  
       [0001] Field of the Invention  
       [0002] This invention relates to a waterproof bag means and in particular to waterproof bags or pouches for campers, mountain climber, etc., such as rucksacks or backpacks, knapsacks and other types of bags for outdoor activities.  
       [0003] Ideally, a combination of three functional properties, i.e., lightness in weight, sufficient waterproofness and also proper air-permeability, are essential for such a bag means, however, it has been impossible to combine these mutually inconsistent properties in a bag. If one of these properties is improved, the remainder would be deteriorated. For example, waterproofness not only affects lightness in weight and air-permeability but also causes the following problems which have not been solved yet:  
       [0004] (1) a highly waterproofed material increases weight and production cost thereof;  
       [0005] (2) waterproofness of materials to be used for a bag means is not sufficiently improved compared with that of cloths, while durability is lower;  
       [0006] (3) when a bag means is exposed to heavy rain, etc., water tends to soak thereinto even if the bag is highly waterproofed;  
       [0007] (4) the thus soaked water is not easily drained dry; and  
       [0008] (5) a seam sealing treatment of bag means further increases the production cost.  
       SUMMARY OF THE INVENTION  
       [0009] According to the present invention, there is provided completely waterproofed bag means comprising a main body made of a mesh material as a whole except an opening portion thereof and a completely waterproofed inner bag to be put in the main body detachably.  
       [0010] A smooth outer cover may be detachably put on the outside of the main body. 
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0011]FIG. 1 is an exploded perspective view of a rucksack according to the present invention.  
     [0012]FIG. 2 is an exploded perspective view of a pouch according to the present invention.  
     [0013]FIG. 3 is an exploded perspective view of a handbag according to the present invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
     [0014] There may be used any kind of conventional materials as a mesh material for the present bag means, although less water-absorbing one is preferable.  
     [0015] An inner bag to be put in a main body contributes to weight-saving of the present bag means as a whole, because only waterproofness might be considered rather regardless of durability thereof.  
     [0016] The present bag means makes it possible to keep various kinds of things independently under a dry condition in the inner bag and an air-permeable condition between the mesh main body and the inner bag, respectively. Due to the above mentioned structure of the present invention, both of improved waterproofness and air-permeability can be secured simultaneously. Similarly, due to this structure, weight of the bag means as a whole can be saved.  
     [0017] As the inner bag prevents soaking from water from outside environment almost completely, the bag can be used continuously without draining.  
     [0018] Further, things put in the space between the mesh main body and the inner bag can be checked easily from outside and, in addition, willingly dried, if necessary.  
     [0019] An outer cover may also be put on the mesh main body in bush, etc. so as to protect the mesh.  
     EMBODIMENTS  
     [0020] Referring now to the drawings, the present invention will be detailed.  
     [0021]FIG. 1 is a perspective view of a rucksack according to the present invention, in which numerals  1 ,  2  and  3  designate a main body, a lid portion and an inner bag, respectively, while numerals  4  and  5  designate catch.  
     [0022] Except the lid portion  2  for getting things in and out, the main body  1  is made of a nylon mesh material. The inner bag  3  is made of waterproofed nylon taffeta for rainwear, while seam thereof is sealed by means of seam tape to enhance waterproofness.  
     [0023] An opening portion of the inner bag  3  is folded to seal the bag  3  by means of a seamed nylon tack  6 .  
     [0024] The main body  1  and an upper portion of the inner bag  3  are joined by means of loop clutches  4  and hooks  5  so as to fit the bag  3  inside of the main body  1  firmly.  
     [0025] The remainder structure of the present bag means is essentially similar to conventional rucksacks.  
     [0026]FIG. 2 is a perspective view of a waist pouch. Basic structure of a main body is the same as that of the rucksack shown in FIG. 1.  
     [0027] An inner bag  3  is made of the same material used for the above mentioned rucksack, which opening portion is closed tight by means of a closing string  7 , then folded back and finally tightened by means of a magic taped belt  8 .  
     [0028] The inner bag  3  is fit inside of the main body  1  firmly by means of hooks  5  similarly as described above.  
     [0029] Numeral  9  designates a nylon outer cover. The outer cover  9  is formed to just fit on the main body so as to cover the mesh completely, thereby hooks  10  being used to fix the cover  9  on the body  1 .  
     [0030]FIG. 3 is a perspective view of a handbag. Basic structure of the handbag is the same as that of the rucksack shown in FIG. 1, except that the lid portion is omitted and double top handles are formed.  
     [0031] An inner bag  3  is made of the same material as described above and formed as a box shape to fit into a main body  1 , while an opening portion thereof is closed tightly by means of seamed nylon tacks  11  and a slide fastener  12 .  
     [0032] The inner body  3  is fixed inside of the main body  1  by means of hooks  4 .