Spill-proof training cup

Abstract

A spill-proof training cup includes a lid with a passage housing a valve. The valve has a valve plane parallel to or forming a selected angle with the passage. The valve plane has a port and a stopping flap attached outside the port to block the port and stop liquid from flowing out. When the cup is sucked on, a pressure difference is generated to overcome the blocking force of the stopping flap and a gap is generated between the stopping flap and the port so that the liquid contained in the cup body may pass through the port. The port and the passage form an angle so that when the training cup is inverted, the liquid contained in the cup does not directly hit the stopping flap and the barrier plane of the valve can block the liquid so that the liquid does not flow out improperly.

1 . A spill-proof training cup for stopping a liquid contained in the cup from flowing out freely when the cup is toppled and for allowing the liquid to flow out relying on a suction force when the cup is sucked on, comprising: 
 a cup body, having a housing compartment to contain the liquid;    a lid, for covering an opening of the cup body, having a suction spout to be sucked on, the suction spout having a passage located on a lower portion to communicate the suction spout with the interior of the cup body;    a valve, located in the passage and having a valve plane parallel to or forming an acute angle with the passage, and the valve plane having a port; and    a stopping flap, having a portion connecting to the valve adjacent to the port and being made from a pliable material, which has resilience, to block the port such that the liquid contained in the cup body does not flow out freely when the cup body is toppled accidentally and a pressure difference is generated to overcome the blocking force of the stopping flap when the suction spout is sucked on and the stopping flap is bent to form a gap with the valve so that the liquid in the cup body flows out through the passage and the port to the suction spout.    
   
   
       2 . The spill-proof training cup of  claim 1 , wherein the valve further has an upper barrier plane and a lower plane to cooperate with the valve plane to divide the passage into a barrier section and a flowing section.  
   
   
       3 . The spill-proof training cup of  claim 1 , wherein the stopping flap is made from a pliable plastic.  
   
   
       4 . The spill-proof training cup of  claim 3 , wherein the pliable plastic is silicon rubber.  
   
   
       5 . The spill-proof training cup of  claim 1 , wherein the lid has an air vent to allow air in the cup body to communicate with the ambience when the cup is sucked on.  
   
   
       6 . The spill-proof training cup of  claim 1 , wherein the valve is formed substantially in a Z-shape.  
   
   
       7 . The spill-proof training cup of  claim 1 , wherein the valve is formed substantially in a L-shape.  
   
   
       8 . A spill-proof training cup for stopping a liquid contained in the cup from flowing out freely when the cup is toppled and for allowing the liquid to flow out relying on a suction force when the cup is sucked on, comprising: 
 a cup body, having a housing compartment to contain the liquid;    a lid, for covering an opening of the cup body, having a suction spout to be sucked on, the suction spout having a passage located on a lower portion to communicate the suction spout with the interior of the cup body; and    a valve, located in the passage and having a valve plane parallel to or forming an acute angle with the passage, the valve plane having a through slit which is closed when not being sucked on and which is opened to form a gap by the suction force generated by suction when the suction spout is sucked on so that the liquid flows out through the gap and the passage to the suction spout.    
   
   
       9 . The spill-proof training cup of  claim 8 , wherein the valve is formed substantially in a Z-shape.  
   
   
       10 . The spill-proof training cup of  claim 8 , wherein the valve is formed substantially in a L-shape.  
   
   
       11 . The spill-proof training cup of  claim 8 , wherein the valve plane is made from a pliable plastic.  
   
   
       12 . The spill-proof training cup of  claim 11 , wherein the pliable plastic is silicon rubber.  
   
   
       13 . The spill-proof training cup of  claim 8 , wherein the through slit is formed in a l-shape.  
   
   
       14 . The spill-proof training cup of  claim 8 , wherein the through slit is formed in an arched shape.  
   
   
       15 . The spill-proof training cup of  claim 8 , wherein the through slit is formed in an irregular shape.  
   
   
       16 . A spill-proof training cup for stopping a liquid contained in the cup from flowing out freely when the cup is toppled and for allowing the liquid to flow out relying on a suction force when the cup is sucked on, comprising: 
 a cup body, having a housing compartment to contain the liquid;    a lid, for covering an opening of the cup body, having a suction spout to be sucked on, the suction spout having a passage located on a lower portion to communicate the suction spout with the interior of the cup body;    a valve, located in the passage and having a barrier plane and a port opposite to the barrier plane; and    a stopping flap, having a portion connecting to the valve adjacent to the port and being made from a pliable material, which has resilience, to block the port such that the liquid contained in the cup body does not flow out freely through the port and the barrier plane withstand the impact of the liquid when the cup body is toppled accidentally and the blocking force of the stopping flap is overcame by a pressure difference generated by suction when the suction spout is sucked on and a gap is formed between the stopping flap and the valve to allow the liquid in the cup body flows out through the port and the passage to the suction spout.    
   
   
       17 . The spill-proof training cup of  claim 16 , wherein the barrier plane includes an upper barrier plane and a lower barrier plane.  
   
   
       18 . The spill-proof training cup of  claim 17 , wherein the port is opposing the lower barrier plane.  
   
   
       19 . The spill-proof training cup of  claim 17 , wherein the stopping flap is located on the upper barrier plane.