Bottle cap with a lock

Abstract

A bottle cap with a lock has a hollow barrel, a plug received into the hollow barrel, a ring provided under the plug, and a fastener. When a bottle neck is mounted with the bottle cap with the lock and the plug rotates relative to the hollow barrel via a key, the fastener slides upwardly adjacent to the plug thereby compressing against the ring to expand to lock the bottle. When rotating the key backwardly, the fastener slides downwardly opposed to the plug thereby the ring being shrunk to get back to an original status so that the ring and the fastener can be taken off from the plug easily for cleaning.

1 . A bottle cap with a lock comprises: 
 a body ( 10 ,  10 ′) having a hollow barrel ( 110 ) and a plug ( 120 ,  120 ′) which is received into the hollow barrel ( 110 ), a hole ( 111 , 111 ′) defined in a lower end of the body ( 10 ,  10 ′), a keyway ( 121 ,  121 ′) defined in an upper end of the body ( 10 ,  10 ′), whereby the plug ( 120 ,  120 ′) rotates relative to the hollow barrel ( 110 ) when a key ( 51 ,  51 ′) is received and rotated in a keyway ( 121 ,  121 ′);    a ring ( 20 ) having an opening ( 21 ) defined in a center thereof and provided under the body ( 10 ,  10 ′); and    a fastener ( 30 ) provided under the ring ( 20 ) and having a shaft ( 31 , 31 ′) upwardly formed in a center thereof whereby the shaft ( 31 , 31 ′) is inserted into the opening ( 21 ) and the hole ( 111 , 111 ′) in turn to connect to the plug ( 120 , 120 ′) so that the shaft ( 31 , 31 ′) can slide in an axial direction relative to the hollow barrel ( 110 ) with the rotation of the plug ( 120 ,  120 ′);    whereby when the ring ( 20 ) is inserted into a bottle neck ( 50 ) and the plug ( 120 ,  120 ′) rotates relative to the body ( 10 , 10 ′) via the rotation of the key ( 51 ,  51 ′) in a first direction, the fastener ( 30 ) slides upwardly adjacent to the plug ( 120 ,  120 ′) thereby compressing against the ring ( 20 ) to expand so that an outer wall of the ring ( 20 ) securely attaches to an inner wall of the bottle neck to lock the bottle; when the key ( 51 ,  51 ′) is rotated in a second direction opposed to the first direction, the plug ( 120 , 120 ′) rotates and the fastener ( 30 ) slides downwardly opposed to the body ( 10 , 10 ′) thereby the ring ( 20 ) can resume its original pre-expanded status so that the present invention can be separated from the bottle neck; when continuing rotating the key ( 51 ,  51 ′) in the second direction, the shaft ( 31 ) separates from the hole ( 111 , 111 ′) and the opening ( 21 ), the ring ( 20 ) and the fastener ( 30 ) can be taken off from the plug ( 120 ,  120 ′) for cleaning.    
   
   
       2 . The bottle cap with the lock as claimed in  claim 1 , wherein a flange ( 113 ) is formed on and radially extends from the lower end of the hollow barrel ( 110 ).  
   
   
       3 . The bottle cap with the lock as claimed in  claim 1 , wherein the shaft ( 31 ) is inserted into the hole ( 111 , 111 ′) whereby the shaft ( 31 , 31 ′) moves upwardly or downwardly in an axial direction rather than rotate in a radial direction, the hole ( 111 , 111 ′) is defined in a lower end of the hollow barrel ( 110 ).  
   
   
       4 . The bottle cap with the lock as claimed in  claim 1 , wherein an anti-dust head ( 150 ) is provided under and detachably attached to the barrel ( 110 ); and 
 the hole ( 111 ′) is defined in a center of the anti-dust head ( 150 ) to allow the shaft ( 31 , 31 ′) move upwardly or downwardly in an axial direction rather than rotate in a radial direction.    
   
   
       5 . The bottle cap with the lock as claimed in  claim 1 , wherein the shaft ( 31 ) is configured to mate with the hole ( 111 , 111 ′) and has two flat portions ( 32 ) formed on an upper end thereof and opposed to each other and two threaded portions ( 33 ) formed adjacent to and spaced the flat portions ( 32 ).  
   
   
       6 . The bottle cap with the lock as claimed in  claim 2 , wherein the shaft ( 31 ) is configured to mate with the hole ( 111 , 111 ′) and has two flat portions ( 32 ) formed on an upper end thereof and opposed to each other and two threaded portions ( 33 ) formed adjacent to and spaced the flat portions ( 32 ).  
   
   
       7 . The bottle cap with the lock as claimed in  claim 4 , wherein the shaft ( 31 ) is configured to mate with the hole ( 111 , 111 ′) and has two flat portions ( 32 ) formed on an upper end thereof and opposed to each other and two threaded portions ( 33 ) formed adjacent to and spaced the flat portions ( 32 ).  
   
   
       8 . The bottle cap with the lock as claimed in  claim 1 , wherein the shaft ( 31 ′) is configured to mate with the hole ( 111 , 111 ′) and has two sliding portions ( 32 ′) formed on an upper end thereof and opposed to each other, and a threaded aperture ( 34 ) defined on an upper end of the shaft ( 31 ′).  
   
   
       9 . The bottle cap with the lock as claimed in  claim 2 , wherein the shaft ( 31 ′) is configured to mate with the hole ( 111 , 111 ′) and has two sliding portions ( 32 ′) formed on an upper end thereof and opposed to each other, and a threaded aperture ( 34 ) defined on an upper end of the shaft ( 31 ′).  
   
   
       10 . The bottle cap with the lock as claimed in  claim 4 , wherein the shaft ( 31 ′) is configured to mate with the hole ( 111 , 111 ′) and has two sliding portions ( 32 ′) formed on an upper end thereof and opposed to each other, and a threaded aperture ( 34 ) defined on an upper end of the shaft ( 31 ′).  
   
   
       11 . The bottle cap with the lock as claimed in  claim 5 , wherein a threaded hole ( 125 ) is defined in a lower end of the plug ( 12020 ′), and the threaded hole ( 125 ) corresponds to and is engaged with the threaded portions ( 33 ).  
   
   
       12 . The bottle cap with the lock as claimed in  claim 6 , wherein a threaded hole ( 125 ) is defined in a lower end of the plug ( 12020 ′), and the threaded hole ( 125 ) corresponds to and is engaged with the threaded portions ( 33 ).  
   
   
       13 . The bottle cap with the lock as claimed in  claim 7 , wherein a threaded hole ( 125 ) is defined in a lower end of the plug ( 12020 ′), and the threaded hole ( 125 ) corresponds to and is engaged with the threaded portions ( 33 ).  
   
   
       14 . The bottle cap with the lock as claimed in  claim 8 , wherein a threaded element ( 129 ) is provided on a lower end of the plug ( 120 , 120 ′) and is screwed into the threaded aperture ( 34 ) in the shaft ( 31 ′).  
   
   
       15 . The bottle cap with the lock as claimed in  claim 9 , wherein a threaded element ( 129 ) is provided on a lower end of the plug ( 120 , 120 ′) and is screwed into the threaded aperture ( 34 ) in the shaft ( 31 ′).  
   
   
       16 . The bottle cap with the lock as claimed in  claim 10 , wherein a threaded element ( 129 ) is provided on a lower end of the plug ( 120 , 120 ′) and is screwed into the threaded aperture ( 34 ) in the shaft ( 31 ′).