Plastic cover for container

Abstract

A plastic cover for a container includes a main body, and an anti-theft ring mounted on an end of the main body and having an inner wall provided with a plurality of catch plates each having a mediate section formed with a bent portion. Thus, the bent portion enhances the structural strength of each of the catch plates, so that each of the catch plates can be made with a smaller thickness, thereby decreasing costs of fabrication.

1 . A plastic cover, comprising: 
 a main body; and    an anti-theft ring mounted on an end of the main body and having an inner wall provided with a plurality of catch plates each having a mediate section formed with a bent portion.    
   
   
       2 . The plastic cover in accordance with  claim 1 , wherein the main body has an inner wall formed with an inner thread.  
   
   
       3 . The plastic cover in accordance with  claim 1 , wherein the main body of the plastic cover has a first end formed with a closed face and a second end formed with an opening.  
   
   
       4 . The plastic cover in accordance with  claim 3 , wherein the anti-theft ring is mounted on the second end of the main body.  
   
   
       5 . The plastic cover in accordance with  claim 3 , wherein each of the catch plates is bent toward the closed face of the main body.  
   
   
       6 . The plastic cover in accordance with  claim 1 , wherein the catch plates of the anti-theft ring are equally spaced from each other.  
   
   
       7 . The plastic cover in accordance with  claim 1 , wherein each of the catch plates of the anti-theft ring is substantially V-shaped.  
   
   
       8 . The plastic cover in accordance with  claim 1 , wherein each of the catch plates of the anti-theft ring has two ends formed with two wings which are inclined toward different directions.  
   
   
       9 . The plastic cover in accordance with  claim 1 , wherein the bent portion of each of the catch plates of the anti-theft ring is directed toward a center of the anti-theft ring.  
   
   
       10 . The plastic cover in accordance with  claim 1 , wherein the bent portion of each of the catch plates of the anti-theft ring is directed toward the inner wall of the anti-theft ring.  
   
   
       11 . The plastic cover in accordance with  claim 1 , wherein the anti-theft ring includes a plurality of flexible connecting ribs for connecting the catch plates so as to enhance the structural strength of the anti-theft ring.  
   
   
       12 . The plastic cover in accordance with  claim 11 , wherein the connecting ribs are deformed when the catch plates are compressed by a transverse force, so as to absorb the transverse compressing force applied on the catch plates.  
   
   
       13 . The plastic cover in accordance with  claim 1 , further comprising a continuously arranged cutting seam formed between the main body and the anti-theft ring, so that the main body is not separated from the anti-theft ring completely.  
   
   
       14 . The plastic cover in accordance with  claim 13 , further comprising a plurality of connecting studs mounted on the inner wall of the main body and the anti-theft ring.  
   
   
       15 . The plastic cover in accordance with  claim 14 , wherein each of the connecting studs has a first end connected to the main body and a second end connected to the anti-theft ring, so that each of the connecting studs is passed through the cutting seam to connect the main body and the anti-theft ring.