Plastic case with simplified assembly and disassembly

Abstract

A plastic case is provided. The plastic case has a first side; a second side attached to the first side; a third side attached to the first side and the second side; a first high-strength bond attaching the first side to at least one of the second side or the third side; and a first perforation in one of the sides that is attached by the first high-strength bond. The first perforation has a lower breaking strength than the first high-strength bond.

1 . A plastic case, comprising: 
 a first side;    a second side attached to the first side;    a third side attached to the first side and the second side;    a first high-strength bond attaching the first side to at least one of the second side or the third side; and    a first perforation in one of the sides that is attached by the first high-strength bond,    wherein the first perforation has a lower breaking strength than the first high-strength bond.    
   
   
       2 . The plastic case of  claim 1 , wherein the first high-strength bond is an ultrasonic weld.  
   
   
       3 . The plastic case of  claim 1 , further comprising a fourth side attached to the first and second sides; 
 a second high-strength bond attaching the fourth side to at least one of the first side or the second side; and    a second perforation in one of the sides that is attached by the second high-strength bond,    wherein the second perforation has a lower breaking strength than the second high-strength bond.    
   
   
       4 . The plastic case of  claim 3 , wherein at least the first high-strength bond or the second high-strength bond is an ultrasonic weld.  
   
   
       5 . The plastic case of  claim 3 , further comprising a fifth side attached to the third and fourth sides; 
 a third high-strength bond attaching the fifth side to at least one of the first, second, third or fourth side; and    a third perforation in one of the sides that is attached by the third high-strength bond,    wherein the third perforation has a lower breaking strength than the third high-strength bond.    
   
   
       6 . The plastic case of  claim 5 , wherein at least the first high-strength bond, the second high-strength bond or the third high-strength bond is an ultrasonic weld.  
   
   
       7 . The plastic case of  claim 5 , wherein the first side is a bottom of the case, and 
 the second, third, fourth and fifth sides are vertical sides of the case.    
   
   
       8 . The plastic case of  claim 7 , wherein the first high-strength bond, the second high-strength bond and the third high-strength bond are ultrasonic welds.  
   
   
       9 . The plastic case of  claim 1 , further comprising 
 a removable panel in one of the first, second or third sides; and    a panel perforation defining the removable panel,    wherein the panel perforation has a lower breaking strength than a non-perforated area of the side in which the panel is located.    
   
   
       10 . The plastic case of  claim 1 , wherein the first high-strength bond and the first perforation are located such that breaking the first perforation allows the case to be opened.  
   
   
       11 . A plastic case comprising: 
 at least three sides;    a first high-strength bond attaching one of the three sides to another one of the three sides; and    a first perforation in one of the sides that is attached by the first high-strength bond,    wherein the first perforation has a lower breaking strength than the first high-strength bond.    
   
   
       12 . The plastic case of  claim 11 , wherein the first high-strength bond is an ultrasonic weld.  
   
   
       13 . The plastic case of  claim 11 , further comprising 
 a fourth side;    a second high-strength bond attaching the fourth side to at least one of the at least three sides; and    a second perforation in one of the sides that is attached by the second high-strength bond,    wherein the second perforation has a lower breaking strength than the second high-strength bond.    
   
   
       14 . The plastic case of  claim 13 , wherein at least the first high-strength bond or the second high-strength bond is an ultrasonic weld.  
   
   
       15 . The plastic case of  claim 14 , wherein the first high-strength bond and the second high-strength bond are ultrasonic welds.  
   
   
       16 . The plastic case of  claim 11 , further comprising 
 a removable panel in one of the at least three sides; and    a panel perforation defining the removable panel,    wherein the panel perforation has a lower breaking strength than a non-perforated area of the one of the at least three sides in which the panel is located.    
   
   
       17 . The plastic case of  claim 11 , wherein the first high-strength bond and the first perforation are located such that breaking the first perforation allows the case to be opened.