Toothbrush

Abstract

In one aspect, the present invention is directed to a toothbrush comprising: a toothpaste dispenser wherein the toothpaste container thereof is deployed within the toothbrush; a passageway from the container to the bristles of the toothbrush, wherein the container and the passageway generate a closed space; and a closure at the end of the passageway, for preventing contact between the air and the toothpaste stored within the closed space. According to one embodiment of the invention, the dispenser dispenses toothpaste upon applying pressure to the container. The toothbrush may further comprise a no-return mechanism, for preventing toothpaste within the closed space from falling back. The no-return mechanism may comprise a valve that comprises, e.g., a flexible lid attached to the body of the toothbrush, for closing the passageway of the valve.

1 . A toothbrush comprising:
 a toothpaste dispenser, wherein the toothpaste container thereof is deployed within said toothbrush;   a passageway from said container to the bristles of said toothbrush, wherein said container and said passageway generate a closed space; and   a closure at the end of said passageway, for preventing contact between the air and the toothpaste stored within said closed space.   
   
   
       2 . A toothbrush according to  claim 1 , wherein said dispenser dispenses toothpaste upon applying pressure to said container. 
   
   
       3 . A toothbrush according to  claim 1 , further comprising a no-return mechanism, for preventing toothpaste within said closed space from falling back. 
   
   
       4 . A toothbrush according to  claim 4 , wherein said closure comprises a valve. 
   
   
       5 . A toothbrush according to  claim 4 , wherein said valve comprises a flexible lid attached to the body of said toothbrush, for closing the passageway of said valve. 
   
   
       6 . A toothbrush according to  claim 1 , wherein said closure comprises a switch for turning said closure from an open state to a closed state, and vice versa. 
   
   
       7 . A toothbrush according to  claim 1 , wherein said closure comprises a valve. 
   
   
       8 . A toothbrush according to  claim 7 , wherein said valve comprises a flexible lid attached to the body of said toothbrush, for closing the passageway of said valve. 
   
   
       9 . A toothbrush according to  claim 1 , wherein the volume of said container is between about 3 to 10 cc. 
   
   
       10 . A toothbrush according to  claim 1 , further comprising a mechanism for automatically opening said closure upon dispensing toothpaste, and automatically closing said closure upon stopping toothpaste dispensing. 
   
   
       11 . A toothbrush according to  claim 10 , wherein said mechanism comprises a sliding member which unblocks said passageway upon pressure of toothpaste, and returns to block said passageway upon releasing said pressure. 
   
   
       12 . A toothbrush according to  claim 11 , wherein said sliding member returns to block said passageway by a spring.