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US 5,632,940 AGranted
Method of making an integrally stiffened article
OwnerBradford L. Whatleyinventor
Life of this patent
Estimating the term…
Abstract
A method of making an article from a fiber reinforced polymer composite material including the steps of providing at least two mandrels, wrapping at least one of the mandrels with a first layer of a fiber reinforced polymer composite material, disposing the at least two mandrels in a predetermined orientation, wrapping a second layer of a fiber reinforced polymer composite material around the mandrels, and curing the wrapped assembly.
Claims30
A method of making an integrally stiffened article, comprising the steps of:
- providing at least two elongated mandrels;
- individually wrapping each of said at least two mandrels with a first layer of a reinforced polymer composite material extending at least once around each of said at least two mandrels;
- disposing said at least two mandrels in a predetermined adjacent orientation;
- overwrapping a second layer of a reinforced polymer composite material at least once around said at least two mandrels to form a subassembly;
- providing at least one additional elongated mandrel;
- individually wrapping said at least one additional mandrel with a first layer of a reinforced polymer composite material extending at least once around said at least one additional mandrel;
- disposing said at least one additional mandrel in adjacent relation with said subassembly;
- overwrapping a third layer of reinforced polymer composite material around said subassembly and said at least one additional mandrel to form an assembly;
- and
- curing said assembly to form an article having a plurality of internal integral stiffeners having common fiber reinforcement, with each of said internal integral stiffeners having fiber reinforcement common to said third layer of reinforced polymer composite material.
7 more elements
A method of making an integrally stiffened article, comprising the steps of:
- providing at least two elongated mandrels;
- individually wrapping each of said at least two mandrels with a first layer of a reinforced polymer composite material extending at least once around each of said at least two mandrels;
- disposing said at least two mandrels in a predetermined orientation;
- overwrapping a second layer of a reinforced polymer composite material at least once around said at least two mandrels to form a subassembly including a concave portion;
- providing at least one additional elongated mandrel;
- individually wrapping said at least one additional mandrel with a first layer of a reinforced polymer composite material extending at least once around said at least one additional mandrel;
- disposing said at least one additional mandrel in adjacent abutting relation with said each of said at least two mandrels, said at least one additional mandrel nested within said concave portion of said subassembly;
- overwrapping a third layer of reinforced polymer composite material around said subassembly and said at least one additional mandrel to form an assembly;
- and
- curing said assembly to form an article having a plurality of internal integral stiffeners having common fiber reinforcement, with each of said internal integral stiffeners having fiber reinforcement common to said third layer of reinforced polymer composite material.
7 more elements
Dependencies are inferred from the claim text.