Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1979-05-07
1981-04-21
Hoag, W.E.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
156245, 264157, 264250, 264258, 264261, 277227, 308 2R, 308 26, B29C 2700, B29G 500
Patent
active
042632439
ABSTRACT:
A strong, light-weight flexible bearing, particularly suitable for use in mounting a movable thrust nozzle to a rocket case, is made by stacking reinforced plastic shims, having the forms of concentric, spherical zones, alternately with layers of elastomer and bonding them together. A protective heat and flame barrier is formed by providing an especially refractory outer edge on each shim, which extends beyond the layers of elastomer. Each shim is made by:
preparing a mold surface that forms a spherical zone of unique radius; filling a refractory cloth with a curable, liquid resin; placing segments of the cloth on the mold surface in an overlapping arrangement until the desired shim thickness is attained; preparing a second mold surface substantially parallel to the first: clamping this over the cloth segments on the first mold surface; and applying heat and pressure to the cloth segments until the resins are cured. The protective edge is formed on each shim by attaching an edging of resin-filled cloth, of especially refractory properties, to the outer edge of at least some of the segments before arranging them in the mold.
REFERENCES:
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patent: 3429622 (1969-02-01), Lee et al.
patent: 3467353 (1969-09-01), Peterson et al.
patent: 3504902 (1970-04-01), Irwin
patent: 3504903 (1970-04-01), Irwin
patent: 3504904 (1970-04-01), Irwin
patent: 3519260 (1970-07-01), Irwin
patent: 3696999 (1972-10-01), Desjardins
Cox D. Morley
Prescott Billy H.
Wilson Jonathan W.
Hoag W.E.
McCullough Edward E.
Thiokol Corporation
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