Steel tube useful in pole, pylon, or tower, filled at least partially with cementitious material, and comprising plural sections bolted to one another at end flanges

Abstract

In a steel tube filled at least partially with a cementitious material, which is pumped into the steel tube and which is allowed to cure, and comprising plural sections, which have end flanges and which are bolted together at the flanges, the flanges contacted by the cementitious material have gaskets to prevent the cementitious material from being extruded between the flanges contacted by the cementitious material before the cementitious material has cured. The flanges having the gaskets are external flanges. The tube sections meeting at the flanges having the gaskets have notches, within which the gaskets are seated, so as to allow the flanges to have flange-to-flange contact, except where the gaskets are seated in the notches.

1 . In a steel tube filled at least partially with a cementitious material, which is pumped into the steel tube and which is allowed to cure, and comprising plural sections, which have end flanges and which are bolted together at the flanges, an improvement wherein the flanges contacted by the cementitious material have means to prevent the cementitious material from being extruded between the flanges contacted by the cementitious material before the cementitious material has cured.  
     
     
         2 . In a steel tube filled at least partially with a cementitious material, which is pumped into the steel tube and which is allowed to cure, and comprising plural sections, which have end flanges and which are bolted together at the flanges, an improvement wherein the flanges contacted by the cementitious material have gaskets to prevent the cementitious material from being extruded between the flanges contacted by the cementitious material before the cementitious material has cured.  
     
     
         3 . In a steel tube filled at least partially with a cementitious material, which is pumped into the steel tube and which is allowed to cure, and comprising plural sections, which have end flanges and which are bolted together at the flanges, an improvement wherein the flanges contacted by the cementitious material are external flanges, which have gaskets to prevent the cementitious material from being extruded between the flanges contacted by the cementitious material before the cementitious material has cured.  
     
     
         4 . The improvement of  claim 2  wherein the tube sections meeting at the flanges having the gaskets have notches, within which the gaskets are seated, so as to allow the flanges to have flange-to-flange contact, except where the gaskets are seated in the notches.  
     
     
         5 . The improvement of  claim 3  wherein the tube sections meeting at the flanges having the gaskets have notches, within which the gaskets are seated, so as to allow the flanges having the gaskets to have flange-to-flange contact, except where the gaskets are seated in the notches.