Polar boss component for pressurized-gas storage assembly

Abstract

A polar boss suitable for use in pressurized-gas assemblies. The polar boss includes a longitudinally extending part with a top surface with a recessed opening and a planar bottom surface. A channel extends through the polar boss, communicates with the recessed opening, and terminates at the bottom planar surface to serve as a passageway through the polar boss. A circular groove is provided on the planar bottom surface with inner and outer side walls, with helical threading provided on the inner and outer side walls.

1 - 3 . (canceled) 
     
     
         4 . A polar boss comprising:
 a longitudinally extending part that has a top surface with a recessed opening;   a planar bottom surface;   a channel extending through the polar boss and communicating with the recessed opening and terminating at the bottom planar surface to serve as a passageway through the polar boss; and   a circular groove provided on the planar bottom surface;   wherein the circular groove comprises an inner side wall and an outer side wall, with a first set of helical threads provided on the inner side wall and a second set of helical threads provided on the outer side wall.   
     
     
         5 . The polar boss of  claim 4  wherein the first set of helical threads, the second set of helical threads, or both comprise tapered threading. 
     
     
         6 . The polar boss of  claim 5  wherein the tapered threading comprises a taper of about 1.79 degrees. 
     
     
         7 . The polar boss of  claim 4  wherein the first set of helical threads, the second set of helical threads, or both are configured to form or cut threads into a raised circular ring of a liner if the polar boss is screwed onto the liner with the raised circular ring engaging within the circular groove. 
     
     
         8 . The polar boss of  claim 4  wherein the first set of helical threads, the second set of helical threads, or both comprise straight threading. 
     
     
         9 . The polar boss of  claim 4  wherein the channel and the recessed opening are configured to receive a fitting body to hermetically seal the channel along the top surface of the longitudinally extending part. 
     
     
         10 . The polar boss of  claim 4 , wherein the polar boss is formed from a metal material. 
     
     
         11 . The polar boss of  claim 4 , wherein the polar boss is formed from a plastic material. 
     
     
         12 . The polar boss of  claim 7  wherein the polar boss is configured to compress the raised circular ring within the circular groove if the polar boss is screwed onto the liner.