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US 6,671,889 B2Granted
Multi-layer, personnel-protective helmet shell with spray-fabricated inner and outer structural layers
OwnerMichael R. Dennis, Russell A. Monkinventors
Life of this patent
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Abstract
A multilayer helmet shell wherein inner and outer, structural, load-bearing semi-rigid layers, each formed from an affinity-bonded agglomeration of mechanically interactive, spray-deposited particles, jacket a viscoelastic, acceleration-rate-sensitive, microcellular foam core layer. The mechanical interfaces between the inner and outer jacketing, and the intermediate core, materials take the form of regions of inter-material suffusement.
Claims8
A largely spray-formed, shock-protective, multilayer helmet shell comprising
- a helmet-shaped structural central layer having inner and outer surfaces,
- a helmet-shaped structural inner layer joined to the inner surface of said central layer, which inner layer has been formed to its final shape substantially entirely by a first vapor-suspension particle deposition material that has been sprayed onto the inner surface of said central layer to form an interactive particle agglomeration, and
- a helmet-shaped structural outer layer joined to the outer surface of said central layer, which outer layer has been formed to its final shape substantially entirely by a second vapor-suspension particle deposition material which has been sprayed onto the central layer's outer surface to form another interactive particle agglomeration.
Dependencies are inferred from the claim text.