Flexible conduit construction and method of making the same

In a method of making a flexible conduit construction having an inner flexible tubular member and having an outer flexible tubular member telescoped about said inner tubular member with the internal peripheral surface of said outer tubular member in spaced relation from the outer peripheral surface of said inner tubular member throughout the length of said inner tubular member to portect the same, said outer tubular member having opposed ends and being formed of a material that radially expands when said opposed ends are placed under axial compression and that radially contracts when said opposed ends are placed under axial tension, said construction having end members respectively secured to said opposed ends of said outer tubular member, the improvement comprising the steps of disposing a resilient means about said inner tubular member in spaced relation therewith and engaging said internal peripheral surface of said outer tubular member to hold said internal peripheral surface in spaced relation relative to said outer peripheral surface of said inner tubular member even when said tubular members are in an arcuately flexed condition, forming said resilient means to comprise a coiled compression spring having opposed ends, securing said opposed ends of said spring respectively to said end members, and placing said outer tubular member under axial tension between said end members and thereby have said internal peripheral surface thereof disposed in radial compression against said coiled compression spring.