Protective panel

• US 6,063,716 A
• Filed: 03/11/1997
• Issued: 05/16/2000
• Est. Priority Date: 03/14/1996
• Status: Expired due to Term

• Current Assignee: Modern Smart Technology Ltd. (Optoma Corporation), Safeboard AB
• Original Assignee: Modern Smart Technology Ltd. (Optoma Corporation), Safeboard AB
• Inventors: Granqvist, Kaj
• Primary Examiner(s): Morris, Terrel
• Application Number:
  US08/815,414
• Time in Patent Office: 1,162 Days
• Field of Search: 428/911, 442/135, 442/208, 442/239, 442/246
• US Class Current: 442/246
• CPC Class Codes: A41D 31/245 using layered materials
• CPC Class Codes: F41H 5/0485 all the layers being only fibre- or fabric-reinforced layers
• CPC Class Codes: Y10S 428/911 Penetration resistant layer
• CPC Class Codes: Y10T 442/322 Warp differs from weft
• CPC Class Codes: Y10T 442/3472 Woven fabric including an additional woven fabric layer
• CPC Class Codes: Y10T 442/3528 Three or more fabric layers

Abstract

The invention concerns a panel for protection against projectiles, splinter, etc. The panel is primarily arranged to supplement the outer shell of a vehicle such that the overall protection against such projectiles is considerably increased without the weight of the vehicle or the like being increased in any essential aspect. The panel includes a two digit number of layers of woven fibers, made from yarns of aramid or corresponding material. The layers are put on top of each other in the direction of incidence of a projectile etc. against the panel.

Claims

1. A protective panel for blocking a potentially dangerous incoming object, comprising at least ten layers of woven fibres stacked on top of each other, wherein at least two of the layers have mutually different mesh sizes, the different mesh sizes being created by providing (a) the warp yarn diameter in one of the two layers being different from the weft yarn diameter in the same layer, and (b) the yarns in one of the two layers having a different diameter from the yarns in the other of the two layers, wherein one of the two layers has warp and weft directions that are rotated and obliquely oriented relative to warp and weft directions of the other of said two layers.

2. The protective panel of claim 1 wherein the woven fibres are aramid.

3. The panel of claim 1 wherein the two layers have different cover factors.

4. A panel for protection against potentially dangerous incoming objects, comprising

a two-digit number of layers of woven fibres, made from yarns of aramid, which layers are put on top or each other in a predicted direction of incidence of a potentially dangerous incoming object against the panel, and

wherein said two-digit number of layers includes at least two layers having mutually different mesh sizes, wherein the different mesh sizes are created by providing (a) the warp yarn diameter in one of the two layers being different from the weft yarn diameter in the same layer, and (b) the yarns in one of the two layers having a different diameter from the vamp in the other of the two layers.

5. The panel as claimed in claim 4, wherein the different mesh sizes in at least two layers are created by using lower and higher cover factors, respectively, in the weaves of said two layers.

6. The panel as claimed in claim 4,

wherein said at least two layers with mutually different mesh sizes include plural sets of three layers, the layers in each set being located along said predicted direction of incidence of a potentially dangerous incoming object.

7. The panel as claimed in claim 6,

wherein the number of sets of layers is at least three.

8. The panel as claimed in claim 6,

wherein the weight of each layer ranges from 100 grams per square meter to 600 grams per square meter.