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US 5,176,778 AGranted
Method for making fiberglass articles
OwnerHarold Curtisinventor
Life of this patent
Estimating the term…
Abstract
A method for making fiberglass articles includes steps for forming fiberglass sections each having a smooth and an unfinished surface and a raised portion, placing unfinished surfaces wet with bonding agent in contact, thus defining a hollow interior channel adjacent to the raised portion, and evacuating the hollow interior channel to compressively hold the sections together while the fiberglass cures to form a single, integral fiberglass part having a smooth finish on all surfaces.
Claims24
A method for forming a fiberglass part comprising the steps of:
- (a) forming first and second fiberglass sections, each of which has a smooth surface and an unfinished surface and edges so that said first section has a raised portion and said second section is relatively more flexible than said first section and has differential curvature at said edges with respect to said first section;
- (b) wetting said unfinished surface of at least one of said first and second fiberglass sections with a bonding agent;
- (c) placing said unfinished surfaces of said first and second fiberglass sections, including said at least one wet, unfinished surface together such that said edges are brought into contact, and so that a hollow interior channel is defined between said first and second fiberglass sections and adjacent said raised portion;
- (d) connecting a vacuum source to said hollow interior channel to evacuate said hollow interior channel, thereby bringing the sections into intimate contact and removing the differential curvature, and causing atmospheric pressure to compressively hold said first and second fiberglass sections firmly together;
- and
- (e) allowing said first and second fiberglass sections to curve, forming a single, integral fiberglass part having a smooth finish on all surfaces.
3 more elements
Dependencies are inferred from the claim text.