Pump nozzle

Abstract

A pump nozzle for a pump, the pump nozzle includes a plunger, a connecting rod, a compression bar, a bushing, a cylinder, and a spring. The cylinder is fixedly attached to the bushing and is equipped with a paddle. When the compression bar is pressed downward, the spring is compressed, a valve between the plunger and the compression bar opens, and the paddle stays put to seal a bottom of the cylinder. When the compression bar is released and allowed to bounce back, the valve between the plunger and the compression bar closes, causing suction by negative pressure to raise the paddle up and draw liquid , fluidic or gaseous content into the cylinder.

What is claimed is: 
     
         1 . A pump nozzle comprising:
 a plunger;   a connecting rod;   a compression bar;   a bushing;   a cylinder; and   a spring,   wherein the compression bar is in the cylinder and goes through the bushing, the spring is between the compression bar and the bushing, the plunger is located over the compression bar and is below and fixedly attached to the bushing, and the cylinder is fixedly attached to the bushing.   
     
     
         2 . The pump nozzle of  claim 1 , in which the cylinder includes a paddle. 
     
     
         3 . The pump nozzle of  claim 2 , wherein the paddle is elastic. 
     
     
         4 . The pump nozzle of  claim 3 , in which the paddle is made of plastic materials. 
     
     
         5 . The pump nozzle of  claim 2 , in which when the compression bar is pressed downward, the spring is compressed, a valve between the plunger and the compression bar opens, and the paddle stays put to seal a bottom of the cylinder. 
     
     
         6 . The pump nozzle of  claim 5 , in which when the compression bar is released and allowed to bounce back, the valve between the plunger and the compression bar closes, causing suction by negative pressure to raise the paddle up and draw fluidic content into the cylinder. 
     
     
         7 . The pump nozzle of  claim 1 , wherein the connecting rod is fitted into a bottom end of the compression bar. 
     
     
         8 . The pump nozzle of  claim 7 , in which a disengaging force between the compression bar and the connecting rod is greater than 7-10 kg. 
     
     
         9 . A pump including a pump nozzle, the pump nozzle comprising:
 a plunger;   a connecting rod;   a compression bar;   a bushing;   a cylinder; and   a spring,   wherein the compression bar is in the cylinder and goes through the bushing, the spring is between the compression bar and the bushing, the plunger is located over the compression bar and is below and fixedly attached to the bushing, and the cylinder is fixedly attached to the bushing.   
     
     
         10 . The pump of  claim 9 , in which the cylinder includes a paddle. 
     
     
         11 . The pump of  claim 10 , wherein the paddle is elastic. 
     
     
         12 . The pump of  claim 11 , in which the paddle is made of plastic materials. 
     
     
         13 . The pump of  claim 10 , in which when the compression bar is pressed downward, the spring is compressed, a valve between the plunger and the compression bar opens, and the paddle stays put to seal a bottom of the cylinder. 
     
     
         14 . The pump of  claim 13 , in which when the compression bar is released and allowed to bounce back, the valve between the plunger and the compression bar closes, causing suction by negative pressure to raise the paddle up and draw liquid content into the cylinder. 
     
     
         15 . The pump of  claim 9 , wherein the connecting rod is fitted into a bottom end of the compression bar. 
     
     
         16 . The pump of  claim 15 , in which a disengaging force between the compression bar and the connecting rod is greater than 7-10 kg.