Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1979-11-26
1981-05-19
Massie, Jerome W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
126417, 156196, 156242, 156280, 156297, 350293, B32B 3104, G02B 510
Patent
active
042683327
ABSTRACT:
An improved method of making a high precision trough shaped parabolic reflector apparatus is described. A smooth surfaced sheet of flexible material is bent and formed over a convex mold comprising a number of precision shaped parabolic arcs mounted to a base. Means are provided for clamping the flexible sheet of material and drawing it into close conformity with the convex mold. The backside or convex side of the sheet of material is then cemented to a support framework comprising a number of approximately parabolic, but not necessarily precision formed web or rib members which are joined together by a torsion tube or similar structural stiffening means. The type of cement utilized accurately fills any discontinuities and/or inaccuracies in the arcuate shape of the approximately parabolic ribs so that the ribs and the flexible sheet are bonded rigidly together as a unit without distortion or strain on the sheet. The approximately parabolic, but non-precision ribs and stiffening means thereafter serve to maitain the sheet of flexible material in a highly accurate and precision parabolic contour produced by the precision parabolic mold.
REFERENCES:
patent: 3264392 (1966-08-01), Taplin
patent: 3654012 (1972-04-01), Schlager
patent: 3655472 (1972-04-01), Chandler
patent: 3855027 (1974-12-01), Erdmann et al.
patent: 4032089 (1977-06-01), Kinsler
patent: 4115177 (1978-09-01), Nelson
patent: 4188358 (1980-02-01), Withoos et al.
Massie Jerome W.
Sun Trac Industries, Inc.
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