Pipe joints or couplings – With strain relief
Patent
1988-09-12
1990-08-28
Arola, Dave W.
Pipe joints or couplings
With strain relief
285247, 285423, F16L 3500
Patent
active
049519760
ABSTRACT:
A connector specially suited for coupling soft resilient hose, in particular polyurethane hose, includes complementary male and female members defining a pair of concentric and generally parallel conical surfaces which receive therebetween the end of the hose to be engaged. At least one sharp circumferential barb is fixedly positioned along the conical surface of the male member to bite into the inner sidewall of the hose, to thereby effectively prevent the hose from slipping off the connector during assembly or subsequent use. The two complementing members are also provided with a pair of cooperating annular shoulders which abuttingly engage when the two members are joined together, to position the conical surface of the male member completely within the female member and thereby eliminate the danger of cutting and for damaging the hose along a projecting edge of the connector. Such abutment of shoulders also indexes the concentric conical clamping surfaces a predetermining distance apart to produce a particular desired compression of the hose wall, and additionally indexes corresponding nut portions on the male and female members in mutually-spaced relationship to more easily engage tools used during assembly and installation of the connector.
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Arola Dave W.
Uni-Mist, Inc.
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