Reusable end fitting for convoluted hose
AssigneeTiteflex Corporation
InventorsJames M. Lalikos, Norman H. Desilets
Life of this patent
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AssigneeTiteflex Corporation
InventorsJames M. Lalikos, Norman H. Desilets
Estimating the term…
Twin seals are provided between an end fitting and a convoluted hose connected thereto. The end fitting has two parts, one of which terminates in an elongated member having large and coarse threads on the outside thereof. As the elongated member is turned into the end of the hose, convolutions at the end of the hose are either scrunched and squeezed together or stretched over a ramp section. One of the seals is along the surface of the large threads and the other is a result of the end thrust either the scrunching and squeezing or the stretching of the end convolutions. A pilot end of braid on the hose pulls it to increase the end thrust. In some embodiments, a third seal is made between the outside surface of the hose and a gland surrounding the hose. The pitch of the large and coarse threads may be longer than the pitch of the convolutions so that an inner core of the hose advances faster than the outer braid, as the elongated member is turned into the end of the core thereby increasing either the scrunching and squeezing or the stretching.
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.
A method of making a two part fitting connection to a convoluted hose, said method comprising the steps of:
Dependencies are inferred from the claim text.