Solvent-bonded joint

Claim 1

In combination, a pair of flexible plastic tubular members frictionally joined directly together along a fluid-tight zone of interference with an elongated gradually-tapered crevice between said members extending towards said zone, said members including an outer member and an inner member, said outer member having an end portion telescopingly receiving an end portion of said inner member, said zone of interference being disposed adjacent the end portion of said inner member, said outer tubular member having an integral tubular insert portion disposed within said inner member, said insert portion frictionally engaging the inner surface of said inner member to form a second fluid-tight zone of interference and bracing said inner member against inward flexure in response to inward forces exerted upon said inner member by said outer member at said first zone of interference, said tapered crevice between said members being adapted to receive liquid solvent for forming a solvent bond, at least one of said flexible plastic members being provided with a plurality of circumferentially-spaced integral nubs disposed within said crevice adjacent the mouth thereof and engaging the other of said members for maintaining a generally uniform annular spacing between said members at the mouth of said crevice.