Pipe joints or couplings – Nonmetal to metal – Internal member
Patent
1987-03-27
1988-09-27
Reese, Randolph A.
Pipe joints or couplings
Nonmetal to metal
Internal member
285242, 285259, 29508, F16L 3320
Patent
active
047736798
ABSTRACT:
A pressurized fluid coupling and a method of manufacturing the pressurized fluid coupling are disclosed. The pressurized fluid coupling includes a metal tube having circumferentially extending beads formed therein for receiving a free end of a flexible tube thereon. The method of manufacturing the pressurized fluid coupling includes selectively hardening alternating wall portions of the metal tube by roll grooving spaced apart circumferentially extending grooves therein. After roll grooving the grooves into the tube, the tube is clamped in a clamping mechanism, and the end of the tube is subjected to an advancing punch mechanism which causes circumferentially extending bulges to form in the tube between the spaced apart grooves. The circumferentially beads add strength to the end of the tube for allowing a flexible hose to be compressedly secured thereto without collapsing the tube.
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Anchor Swan
Knight Anthony
Reese Randolph A.
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