Weldless transfer tube assembly

Abstract

A weldless assembly comprises a plurality of tubes, wherein the plurality of tubes includes an inner tube, an intermediate tube, and an outer tube; a first closure end configured to cap a first side of the plurality of tubes; and a second closure end configured to cap a second side of the plurality of tubes.

What is claimed is: 
     
         1 . A weldless assembly comprising:
 a plurality of tubes comprising an inner tube, an intermediate tube, and an outer tube;   a first closure end configured to cap a first side of the plurality of tubes; and   a second closure end configured to cap a second side of the plurality of tubes.   
     
     
         2 . The weldless assembly of  claim 1 , wherein each of the inner, the intermediate, and the outer tubes are separately nitrided to ensure consistent material properties between the inner, the intermediate, and the outer tubes prior to the assembly of the plurality of tubes. 
     
     
         3 . The weldless assembly of  claim 1 , wherein the intermediate tube is inserted into the outer tube. 
     
     
         4 . The weldless assembly of  claim 3 , wherein the inner tube is inserted into the intermediate tube. 
     
     
         5 . The weldless assembly of  claim 1 , wherein each of the first and second closure ends comprise a plurality of seals that are aligned with the plurality of tubes. 
     
     
         6 . The weldless assembly of  claim 1 , wherein the first closure end comprises a washer that secures the first closure end to the plurality of tubes. 
     
     
         7 . The weldless assembly of  claim 1 , wherein the second closure end comprises a guide that secures the second closure end to the plurality of tubes. 
     
     
         8 . The weldless assembly of  claim 1 , wherein a snap ring secures the second closure end to the outer tube.