Pipe joints or couplings – Nonmetal to metal – Internal member
Patent
1998-02-19
1999-11-16
Arola, Dave W.
Pipe joints or couplings
Nonmetal to metal
Internal member
285351, 29508, 29509, 29516, F16L 3320
Patent
active
059843764
ABSTRACT:
A compact, lightweight closed coupling male spring lock fitting for direct connection to an air-conditioning hose having an inner sleeve, an outer sleeve and an annular cage, the inner sleeve having stepped portion that receives an inner surface of the annular cage. The annular cage surrounds the outer diameter of the inner sleeve and is spaced a distance from one end of the inner sleeve. The outer sleeve abuts an outer surface of the annular cage and prevents axial movement of the annular cage. The outer sleeve is retained in a retaining groove on the outer diameter of the inner sleeve, adjacent the stepped portion. The closed coupling of the outer sleeve and annular cage significantly reduces the overall length and weight of the fitting in comparison to prior art fittings and the inner sleeve may be machined opposed to conventional tube roll-forming processes.
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Arola Dave W.
Automotive Fluid Systems, Inc.
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