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US 4,030,953 AGranted
Method of molding fiberglass reflecting antenna
AssigneesScala Radio Corporation, Milliflect
InventorsJoseph Fredrick Rutschow, Bruno Zucconi
Life of this patent
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Abstract
Fiberglass antenna for reflecting electromagnetic radiation. The antenna includes metal reflecting surface embedded within the fiberglass. The antenna is fabricated in a heated, vacuum injected mold.
Claims2
Method of fabricating a fiberglass reflecting antenna, comprising the steps of:
- a. spraying a gel coat layer into a first convex antenna mold, said first mold having a predetermined curvature;
- b. applying a layer of resin impregnated fiberglass cloth on top of the gel coat in the first convex mold;
- c. placing an electromagnetic reflecting surface on top of the layer of resin impregnated cloth;
- d. placing a plurality of layers of dry fiberglass woven roving into the first convex mold on top of the reflecting surface;
- spraying a gel coat layer into a second concave antenna mold, said second concave mold having both a shape and a predetermined curvature complimentary to said first convex mold;
- f. applying a layer of chopped fiberglass and resin on top of the gel coat layer in the second mold;
- g. anchoring a plurality of mounting brackets to said chopped fiberglass and resin layer in the second mold;
- h. placing said first convex mold and said second concave mold together;
- i. injecting resin into the space between said molds;
- j. pressing said molds together while the injected resin hardens so that the electromagnetic reflecting surface assumes the predetermined curvature of said molds;
- k. heating said molds to an elevated temperature that substantially relieves shrinkage induced stress in the fiberglass;
- and
- l. removing the antenna from the molds after cooling.
10 more elements
Dependencies are inferred from the claim text.