Concrete Tie Fastener

Abstract

This invention addresses issue of rail seat abrasion by completely removing all elastomers from directly contacting the rail by utilizing a shoulder post with a lower portion that is coated or encapsulated with a nonconductive material and a rolled or cast tie plate design that introduces a tie plate to the rail seat of the concrete tie. The coated or encapsulated lower portion of the shoulder is then cast into the concrete. By having the pad between the plate and the tie, it is subjected to vertical compression only with no rubbing action.

1 . A tie fastener system comprising wherein there is no direct contact between the rail and elastomers in a track that uses rail borne signal circuitry. 
   
   
       2 . A tie fastener system as in  claim 1  further comprising having a direct fixation fastening system. 
   
   
       3 . A tie fastener system as in  claim 2  where said direct fixation fastening system is concrete. 
   
   
       4 . A tie fastener system as in  claim 1  further comprising having the rail in direct contact with a tie plate. 
   
   
       5 . A tie fastener system as in  claim 1  further comprising having the pad placed beneath a tie plate. 
   
   
       6 . A tie fastener system as in  claim 1  further comprising having an insulator post with an electrically inert coating cast into the concrete tie making the shoulder electrically isolated from the concrete tie. 
   
   
       7 . A tie fastener system as in  claim 1  further comprising having a plurality of electrically isolated shoulder hooks into an electrically isolated receptacle that is cast into the tie. 
   
   
       8 . A tie fastener system as in  claim 1  further comprising having an electrically isolated receptacle for accepting a hook-in shoulder is cast into the tie. 
   
   
       9 . A tie fastener system as in  claim 1  further comprising having a tie plate with a hole through which it receives the shoulder post. 
   
   
       10 . A tie fastener system as in  claim 1  further comprising having clip locks that are preassembled system together prior to being delivered to the installation site. 
   
   
       11 . A tie fastener system comprising wherein there is no direct contact between the rail and elastomers in a track that uses rail borne signal circuitry having a direct fixation fastening system having the rail in direct contact with a tie plate, having the pad placed beneath a tie plate, having an insulator post with an electrically inert coating cast into the concrete tie making the shoulder electrically isolated from the concrete tie, having a plurality of electrically isolated shoulder hooks into an electrically isolated receptacle that is cast into the tie having the electrically isolated receptacle for accepting a hook-in shoulder is cast into the tie. 
   
   
       12 . A tie fastener system as in  claim 11  where said direct fixation fastening system is concrete. 
   
   
       13 . A tie fastener system as in  claim 11  further comprising having a tie plate with a hole through which it receives the shoulder post. 
   
   
       14 . A tie fastener system as in  claim 11  further comprising having clip locks that are preassembled system together prior to being delivered to the installation site. 
   
   
       15 . A tie fastener comprising wherein a fastener with no direct contact between the rail and elastomers in a track that uses rail borne signal circuitry having a direct fixation fastening system having the rail in direct contact with a tie plate, having the pad placed beneath a tie plate, having an insulator post with an electrically inert coating cast into the concrete tie making the shoulder electrically isolated from the concrete tie, having a plurality of electrically isolated shoulder hooks into an electrically isolated receptacle that is cast into the tie having the electrically isolated receptacle for accepting a hook-in shoulder is cast into the tie. 
   
   
       16 . A tie fastener as in  claim 15  where said direct fixation fastening system is concrete. 
   
   
       17 . A tie fastener as in  claim 15  further comprising having a tie plate with a hole through which it receives the shoulder post. 
   
   
       18 . A tie fastener as in  claim 15  further comprising having clip locks that are preassembled system together prior to being delivered to the installation site.