Crimped or swaged couplings for cable reinforced hoses

Abstract

A hose coupling for fitment to an end of a cable reinforced hose includes a unitary stem having a cable trap groove portion having an outside diameter greater than an inside diameter of a tube of the hose and less than an inside diameter of the hose with the tube skived from the hose. A unitary ferrule defines at least one cable trap rib corresponding to the cable trap groove and having an inside diameter less than the outside diameter of the cable reinforced hose and greater than an outside diameter of the hose with material covering the cable skived from the hose. The groove width is at least the width of the rib plus twice the diameter of cable reinforcing the hose. Epoxy may be disposed between the hose tube and the stem for sealing or injected between the ferrule and the stem permeating the cable.

What is claimed is: 
     
         1 . A method comprising:
 skiving layers of a cable reinforced hose covering the cable reinforcement from an end portion of said cable reinforced hose;   skiving a tube from inside a distal portion of said end portion of said cable reinforced hose;   disposing a unitary stem having an inner bore, a termination portion for attaching to a fixture, a cable trap groove portion and an insert portion, with said insert portion inserted inside said tube of said cable reinforced hose and with said cable trap groove inserted inside said distal portion of said end portion of said hose;   disposing a unitary ferrule having a plurality of ridges inter-indexing with lands defined on an outside of said insert and with at least one cable trap rib corresponding to the cable trap groove over said end portion of said hose; and   compressing said ferrule resulting in said ridges compressing said hose to seal said tube in said lands and said rib forcing said cable into said groove.   
     
     
         2 . The method of  claim 1 , wherein said compressing distorts a plurality of cables reinforcing said hose between said cable trap rib and said cable trap groove. 
     
     
         3 . The method of  claim 1  wherein said coupling further comprises a weephole connecting the space occupied by the hose between said ferrule and said stem to the outside. 
     
     
         4 . The method of  claim 1 , wherein said compressing is swaging. 
     
     
         5 . The method of  claim 1 , wherein said compressing is crimping. 
     
     
         6 . The method of  claim 1 , further comprising welding said ferrule to said stem, prior to said disposing steps. 
     
     
         7 . The method of  claim 6 , wherein said welding comprises welding said ferrule on said stem with said termination portion of said stem extending from said ferrule and said cable trap groove and said insert of said stem disposed in said ferrule. 
     
     
         8 . The method of  claim 1 , further comprising disposing epoxy between said tube and said stem, prior to said compressing wherein said compressing causes said epoxy to seal the tube of the hose against the stem. 
     
     
         9 . The method of  claim 1 , further comprising injecting low viscosity epoxy through a weephole to in between said ferrule and said stem, following said compressing. 
     
     
         10 . The method of  claim 1 , wherein said hose is a blow out preventer hose. 
     
     
         11 . Method of  claim 2  wherein said weephole passes through a circular plate securing said ferrule to said stem. 
     
     
         12 . A method comprising:
 skiving layers of a cable reinforced hose covering the cable reinforcement from an end portion of said cable reinforced hose;   skiving a tube from inside a distal portion of said end portion of said cable reinforced hose;   disposing a unitary stem having an inner bore, a termination portion for attaching to a fixture, a cable trap groove portion and an insert portion, with said insert portion inserted inside said tube of said cable reinforced hose and with said cable trap groove inserted inside said distal portion of said end portion of said hose;   disposing a unitary ferrule having a plurality of ridges inter-indexing with lands defined on an outside of said insert and with at least one cable trap rib corresponding to the cable trap groove over said end portion of said hose; and   compressing said ferrule resulting in said ridges compressing said hose to seal said tube in said lands and in said rib forcing said cable into said groove and in distorting a plurality of cables reinforcing said hose between said cable trap rib and said cable trap groove;   wherein said coupling further comprises a weephole connecting the space occupied by the hose between said ferrule and said stem to the outside.   
     
     
         13 . Method of  claim 12  wherein said weephole passes through a circular plate securing said ferrule to said stem. 
     
     
         14 . The method of  claim 13 , further comprising injecting low viscosity epoxy through said weephole to in between said ferrule and said stem, following said compressing.