# US 9,040,160 B2 · Multilayer armor

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- Number: US 9,040,160 B2
- Document ID: US9040160B2
- Status: Granted
- Kind: B2
- Application number: 13/441,413
- Filed: 2012-04-06
- Published: 2012-11-29
- Granted: 2015-05-26
- Earliest claimed: 2011-04-08
- Assignees: Schott AG
- Applicants: John Carberry; Katherine T. Leighton; Carsten Weinhold; Eric Urruti
- Inventors: John Carberry; Katherine T. Leighton; Carsten Weinhold; Eric Urruti
- Web page: https://patentgrep.com/patent/US9040160B2

## CPC

- F41H 5/02: Plate construction
- B32B 17/10733: {containing epoxy}
- B32B 17/10743: {containing acrylate (co)polymers or salts thereof}
- B32B 17/10761: {containing vinyl acetal}
- B32B 17/1077: {containing polyurethane}
- B32B 17/10798: {containing silicone}
- B32B 17/10853: {the membrane being bag-shaped}
- F41H 5/0407: {Transparent bullet-proof laminates}{informative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66}
- F41H 5/0414: {Layered armour containing ceramic material}
- Y10T 428/24942: including components having same physical characteristic in differing degree
- Y10T 428/315: Surface modified glass [e.g., tempered, strengthened, etc.]
- F41H: ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A multilayer armor is provided that includes a first rigid layer, a second rigid layer, and an interlayer securing the first and second rigid layers to one another. At least one of the first and second rigid layers can include a plurality of regions with a physical or material property that varies between the regions. The interlayer can have a force-extension ratio of 5,600 psi/in or less. The interlayer can have a physical or material property that varies within the interlayer.

## Claims

### Claim 1

A multilayer armor comprising:
a first rigid layer;
a second rigid layer; and
an interlayer securing the first and second rigid layers to one another, wherein at least one of the first and second rigid layers is divided into strips having varying degrees of tempering.

### Claim 2 (depends on 1)

The multilayer armor of claim 1, wherein the first and second rigid layers and the interlayer are each transparent and have matching refractive indicies such that the armor is transparent.

### Claim 3 (depends on 1)

The multilayer armor of claim 1, wherein each of the first and second rigid layers comprises a physical or material property that varies within the layer.

### Claim 4 (depends on 1)

The multilayer armor of claim 1, wherein the first and second rigid layers are made of a material selected from the group consisting of glass, ceramic, glass-ceramic, and plastic.

### Claim 5 (depends on 1)

The multilayer armor of claim 1, wherein said tempering is chemical or thermal tempering.

### Claim 6 (depends on 1)

The multilayer armor of claim 1, wherein each of the first and second rigid layers is divided into strips having varying degrees of tempering, and the strips in the first rigid layer and the strips in the second rigid layer are angled with respect to one another.

### Claim 7 (depends on 1)

The multilayer armor of claim 1, wherein the at least one of the first and second rigid layers is a rigid polymer layer having cavities defined therein, and the rigid polymer layer includes a different material within the cavities, wherein the different material has an index of refraction substantially equal to that of the rigid polymer layer.

### Claim 8 (depends on 1)

The multilayer armor of claim 1, wherein the at least one of the first and second rigid layers comprises a glass-ceramic sphere that is flattened.

### Claim 9 (depends on 1)

The multilayer armor of claim 1,
wherein said first rigid layer is a glass or glass-ceramic layer comprising a strike face,
wherein the strike face has a strength that is at least three times greater than the strength of the second rigid layer.

### Claim 10 (depends on 1)

The multilayer armor of claim 1, wherein said interlayer has a physical or material property that varies within the interlayer.

### Claim 11 (depends on 1)

The multilayer armor of claim 1, wherein said interlayer has a force-extension ratio of 5,600 psi/in or less.