F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 33/20 (2006.01) F16L 25/00 (2006.01) F16L 33/213 (2006.01)
Patent
CA 2066255
New hose construction, new couplings therefor and new methods of making such hose constructions and new methods of making such couplings are provided herein. In one embodiment, an improvement is provided in a hose construction including a tubular hose having an inner peripheral surface and an outer peripheral surface, and a coupling secured to one end of the tubular hose. The improvement is one wherein the innerperipheral surface means of the tubular hose includes an inner corrugated hose which is made of polymeric material and which has inwardly-convex projections with recesses therebetween and which extends from one end of the tubular hose to the other endthereof. In addition, the coupling has an insert which is disposed in one end of the tubular hose and which is radially-outwardly-expanded into sealing relation with the inner corrugated hose. The insert has an outer peripheral surface which is defined by a plurality of outwardly-convex projections with recesses therebetween. Such projections of the insert are respectively received in the recesses of the inner hose. The projections of the inner hose are respectively received in the recesses of the insert. In this way, the interior of the tubular hose is substantially-sealed to the interior of the coupling. Furthermore, the insert includes an inner tubular metallic sleeve and an outer tubular polymeric sleeve which is telescopically-disposed on the tubular metallic sleeve and which has an outer peripheral surface that comprises the outer peripheral surface of the insert. The inner tubular metallic sleeve and the outer tubular polymeric sleeve have been simultaneously-radially-outwardly-expanded in the telescoped relation thereof to provide the sealing relation with the inner corrugated hose.
Foster Randy C.
Holden Homer N.
Sanders John D.
Borden Ladner Gervais Llp
Dayco Products Llc
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