F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
26/156, 285/62,
F16L 21/00 (2006.01) B29C 27/20 (1980.01)
Patent
CA 1137271
Abstract of the Disclosure A coupling comprises a body of fiber glass rein- forced plastic which has a rubber sleeve embedded therein. The rubber sleeve is a one piece unit which includes specially shaped sealing gaskets on either end and has a rubber liner spanning the area between these sealing gaskets. This rubber sleeve is stretched onto a steel and plastic molding mandrel. This stretching places the rubber liner under tension which reduces the cross-sectional area of the liner and compensates for thermal expansion of the liner during curing. The mandrel/sleeve combination is rotated in order to wind a thermosetting resin impregnated fiber glass roving around ?? outer circumference of the mandrel/sleeve combination, thus embedding the sleeve in the fiber glass reinforced resin matrix. The thermosetting resin is cured at elevated temperatures, hardening into a rigid coupling with the embedded rubber sleeves integral therewith. There- after the hardened coupling is stripped from the steel and plastic mandrel and subjected to a further curing and finishing operation.
328595
Ferraro Joseph P.
Heisler Robert W.
Kazienko Henry J.
Lostak Charles
Sznopek John L.
Johns-Manville Corporation
Macrae & Co.
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