Dispensing nozzle

Abstract

A nozzle is provided for dispensing a viscous material. The nozzle includes an elongated nozzle body defining a hollow passage formed between a base and the tapered end. The tapered end is initially closed for preventing discharge of material from within the passage. A removable tip portion is formed within the tapered end of the nozzle body. The removable tip is formed by a tear tab projecting from the tapered end and a removable tear strip formed within the sidewall of the nozzle body and connected to the tab. The tear strip is defined by spaced, longitudinally extending tear lines within the sidewall and includes at least two removable sections along the length of the strip. The tear tab forms a starting mechanism for transferring an opening force to the tear strip to remove the sections of the strip to form a discharge opening.

What is claimed is: 
     
         1 . A nozzle for dispensing a viscous material, the cartridge, the nozzle comprises:
 an elongated nozzle body defining a hollow passage formed between a base and the tapered end, the tapered end initially formed in a closed condition for preventing discharge of material from within the passage,   a removable tip portion formed within the tapered end of the nozzle body, the removable tip having
 a tear tab projecting from the tapered end, and 
 a removable tear strip formed within the sidewall of the nozzle body and connected to the tab, the tear strip defined by spaced, longitudinally extending tear lines within the sidewall and having at least two removable sections along the length of the strip, 
 the tear tab forming a starting mechanism for transferring an opening force to the tear strip to remove the sections of the strip along the tapered end to form a discharge opening, and 
 wherein each section of the tear strip defines length of nozzle opening. 
   
     
     
         2 . The nozzle of  claim 1  wherein the passage in the nozzle body tapers inwardly along the sidewall from the nozzle base to the discharge tip. 
     
     
         3 . The nozzle of  claim 1  wherein the nozzle body tapers along the nozzle axis. 
     
     
         4 . The nozzle of  claim 1  wherein the longitudinal lines diverge from one another as the lines extend toward the base. 
     
     
         5 . The nozzle of  claim 1  wherein the nozzle body has a circular cross-section at positions along its length between the base and the tapered end. 
     
     
         6 . The nozzle of  claim 1  wherein the tear strip is generally arched between the spaced lines. 
     
     
         7 . The nozzle of  claim 1  wherein the tear strip is generally flat between the spaced lines. 
     
     
         8 . The nozzle of  claim 1  wherein the spaced tear lines are positioned on opposing sides of the nozzle body. 
     
     
         9 . The nozzle of  claim 8  wherein the reduction in thickness of the sidewall defining the tear lines is directed radially inwardly toward the nozzle axis. 
     
     
         10 . The nozzle of  claim 8  wherein the reduction in thickness of the sidewall, defining one of the tear lines, is directed inwardly toward the second reduction in thickness, defining a second tear line. 
     
     
         11 . The nozzle of  claim 1  wherein the discharge tip forms an end wall substantially transverse with the nozzle axis.