Patent ID: 11885596
Assignee: nan
Field: Surface technology, coating (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 6:
7. A bulletproof structure, comprising a plurality of hybrid-layered cells in a fish-scale arrangement, each of the plurality of hybrid-layered cells further comprising:
a viscous absorber layer, containing a semi-liquid viscous material, wherein the viscous absorber layer retards rotation and velocity of an incoming object;
a first elastic metal layer, laminated fixedly to the viscous absorber layer, having a first predetermined toughness;
a viscous-elastic foundation layer, laminated fixedly to the first elastic metal layer by opposing the viscous absorber layer, having predetermined elasticity and compressibility; and
a second elastic metal layer, laminated fixedly to the viscous-elastic foundation layer by opposing the first elastic metal layer, having a second predetermined toughness;
wherein the first predetermined toughness is higher than the second predetermined toughness;
wherein the first elastic layer deforms as the object impacting on the first elastic metal layer, and the viscous elastic foundation layer adheres the first elastic metal layer and the second elastic metal layer together for supporting the first elastic metal layer to resist deformation; and
wherein the viscous-elastic foundation layer includes a plurality of coiled spring elements with different lengths extending in parallel between the first elastic metal layer and the second elastic metal layer;
wherein the plurality of coiled spring elements includes a plurality of first spring elements extending in parallel and individually connecting the first elastic metal layer and the second elastic metal layer, and a plurality of second spring elements disposed in parallel on the second elastic metal layer and having a diameter larger than that of the first spring elements and a length shorter than that of the first spring elements.