Reusable end fitting for convoluted hose

Claim 1

A reusable end fitting for a convoluted hose, said end fitting comprising coaxial inside and outside parts each of which has an inner and an outer end, said parts being joined to each other at said coaxial inner ends when said parts are attached to a hose, said inside part having an elongated section with a large and coarse screw thread at its outer end to turn into the convolutions of said hose, the contours of the large and coarse screw thread and hose convolutions approximately complementing each other, the pitch and diameter of said coarse screw threads progressively increase to progressively flatten said convolutions onto a generally smooth substantially funnel shaped ramp area near the inner end of said elongated section, the diameter of a small end of said funnel shaped ramp area beginning with the diameter of said elongated section having said coarse screw threads and progressively increasing thereafter, whereby a continual turning of said inner member into said hose stretches at least some of the convolutions at the end of the hose and gradually smooths and stretches the hose over said ramp area, valleys of said convolutions on said hose being stretched to seal around the ramp area, said outside part having an internal area with a contour which is complementary to said substantially funnel shaped ramp area, and means responsive to a joining of said inside and outside parts for compressing the end of said hose in a captured position between said parts in said funnel shaped ramp area and the contour which is complementary thereto.

Claim 10

A method of making a two part fitting connection to a convoluted hose, said method comprising the steps of: (a) screwing one of said two parts which comprises an elongated fitting having a large and coarse thread extending in a progressively increasing pitch and diameter to form a gradually smoothing walled ramp, into the end of a convoluted hose, the other of said parts having an internal area which is complementary to said smooth walled ramp within a space therebetween; (b) continuing screwing said fitting into said hose to gradually stretch the convolutions at the end of said hose into a pressure contact gradually flattening and smoothing said hose over said smooth walled ramp on said elongated fitting; (c) capturing an end of said hose between said two parts of said fitting and in said space between said ramp and the area complementary thereto; and (d) placing said stretched convolutions at the end of said hose into a tighter pressure contact over said ramp responsive to a closing of said two parts relative to each other.

Claim 11

A method of making a two part fitting connection to a convoluted hose, said method comprising the steps of: (a) screwing one of said two parts which comprises an elongated fitting having a large and coarse thread extending in a progressively increasing pitch and diameter to form a gradually smoothing walled ramp, into the end of a convoluted hose, the other of said parts having an internal area which is complementary to said smooth walled ramp within a space therebetween; (b) continuing screwing said fitting into said hose to gradually stretch the convolutions at the end of said hose into a pressure contact gradually flattening and smoothing said hose over said smooth walled ramp on said elongated fitting; (c) capturing an end of said hose between said two parts of said fitting and in said space between said ramp and the area complementary thereto; and (d) placing said stretched convolutions at the end of said hose into a tighter pressure contact over said ramp responsive to a closing of said two parts relative to each other.