Sandwich structure and method of making same
First Claim
1. A sandwich structure comprising:
- a core having opposing top and bottom surfaces;
a plurality of discrete pins disposed through the core and extending beyond the top and bottom surfaces of the core;
a face sheet on the top core surface; and
a face sheet on the bottom core surface, the ends of each pin bent over and lying between the respective core surfaces and the face sheets.
1 Assignment
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Accused Products
Abstract
A sandwich structure including a core having opposing top and bottom surfaces, a plurality of discrete pins disposed through the core and extending beyond the top and bottom surfaces of the core, a face sheet on the top core surface, and a face sheet on the bottom core surface. The ends of each pin are bent over and lie between the respective core surfaces and the face sheets to secure the face sheets to the core, improve the strength of the core, and to provide a physical connection between the two face sheets. Also disclosed is a reinforced core for a sandwich structure which does not yet have the face sheets assembled to it. Also disclosed is a method of making such a reinforced core and completed sandwich structures including such a core.
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Citations
18 Claims
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1. A sandwich structure comprising:
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a core having opposing top and bottom surfaces;
a plurality of discrete pins disposed through the core and extending beyond the top and bottom surfaces of the core;
a face sheet on the top core surface; and
a face sheet on the bottom core surface, the ends of each pin bent over and lying between the respective core surfaces and the face sheets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A sandwich structure comprising:
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a core having opposing top and bottom surfaces;
a plurality of discrete pins disposed through the core and extending beyond the top and bottom surfaces of the core wherein each pin includes strands of fiber;
a face sheet on the top core surface; and
a face sheet on the bottom core surface, the ends of each pin bent over and lying between the respective core surfaces and the face sheets wherein the strands of fibers are separated from each other at the extending bents over ends of each pin.
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15. An improved core for a sandwich structure, the improved core comprising:
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a core body;
a top and bottom surface; and
a plurality of discrete pins each having strands of fiber inserted through the core, the ends of each pin extending from top and bottom surfaces of the core and bent over and lying along the respective top and bottom surfaces of the core wherein the strands of fiber are separated from each other at the bent over ends of each pin.
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16. A sandwich structure comprising:
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a core having top and bottom surfaces;
a top face sheet material layer on the top core surface;
a bottom face sheet material layer on the bottom core surface; and
a plurality of discrete pins each having strands of fiber disposed through the core and the face sheet material layers and extending beyond the face sheet material layers, the extending ends of each pin bent over and lying along the exterior of the respective face sheet material layers wherein the strands of fiber are separated from each other at bent over ends of each pin.
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17. An improved core for a sandwich structure, the improved core comprising:
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a core body;
a top and bottom surface; and
a plurality of discreet pins inserted through the core, the ends of each pin extending from the top and bottom surfaces of the core and bent over and lying along the respective top and bottom surfaces of the core, each pin including strands of fiber and wherein the strands of fiber are separated from each other at the bent over ends of the pin.
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18. A sandwich structure comprising:
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a core having top and bottom surfaces;
a top face sheet material layer on the top core surface;
a bottom face sheet material layer on the bottom core surface; and
a plurality of pins disposed through the core and the face sheet material layers and extending beyond the face sheet material layers, the extending ends of each pin bent over and lying along the exterior of the respective face sheet material layers, each pin including strands of fiber, the strands of fiber separated from each other at the bent over ends of each pin.
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Specification