Convoluted hose end assembly

Claim 1

In combination, a hose and a fitting, said fitting secured to one end of said hose, said hose end comprising helical convolutions having a predetermined pitch width, said fitting comprising a generally cylindrical nipple insert sealingly engaging said hose end, said insert having a longitudinal axis along which are spaced at least two distinct raised, annular, non-helical sealing surfaces and a relief region positioned between said surfaces, said relief region having a reduced diameter portion comprising a diameter less than that of each of said sealing surfaces, wherein each of said spaced sealing surfaces has a longitudinal width of approximately one pitch width of said hose, said combination further comprising at least one of said helical convolutions of said hose end being flattened directly over each of said sealing surfaces, and wherein other of said convolutions define a crush portion overlying said relief region, said reduced diameter portion of said relief region being bounded on each side by one of a pair of relief ramps, each ramp opposed to the other and defining equal but opposite angles in a range of 10 to 25 degrees with respect to said longitudinal axis, and wherein said reduced diameter portion is also equal to one pitch width of said hose.