Anti back-out steel coupling system for nonmetallic composite pi

Details Anti back-out steel coupling system for nonmetallic composite pi Anti back-out steel coupling system for nonmetallic composite pi

1984-10-29

1985-10-22

Callaghan, Thomas F.

Pipe joints or couplings

With means blocking release of holding means

Set screw

285246, 285353, F16L 3318

Patent

active

045484287

ABSTRACT:
A steel coupling system that is joined together by standard oil-well tubing threads, but is prevented from backing out by a set screw system, and is sealed by a compressible gasket, which creates an internally flush, or straight transition across the inside surface of the coupling system. Both the male and female halves of the coupling system are affixed to unidirectional, or longitudinally-reinforced nonmetallic composite pipe by a friction-grip technique that radially compresses the composite pipe wall at right angles to the longitudinal reinforcing fibers. The coupling system is designed in such a way that the greater the axial tensile stress across the coupling the greater is the gripping action, or the compression of the nonmetallic composite pipe wall.

REFERENCES:
patent: 579986 (1897-04-01), Jordan
patent: 904673 (1908-11-01), Bideker
patent: 1091759 (1914-03-01), Paradis
patent: 1344774 (1920-06-01), Stafford et al.
patent: 3352577 (1967-11-01), Medney
patent: 3357725 (1967-12-01), Champion

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