Protective helmet with multi-density impact liners and method for same
US-10010127-B1 · Jul 3, 2018 · US
US11517065B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11517065-B2 |
| Application number | US-201916577008-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 20, 2019 |
| Priority date | Mar 21, 2017 |
| Publication date | Dec 6, 2022 |
| Grant date | Dec 6, 2022 |
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Official abstract text for this publication.
A protective helmet including an outer shell, and a liner assembly received in the outer shell and connected to the outer shell, the liner assembly defining a front portion configured to overlay a front of a head of a wearer, a rear portion configured to overlay a rear of the head of the wearer, a top portion disposed above and out of contact with a top of the head of the wearer when the helmet is worn, and two opposed side portions each configured to overlay a respective side of the head of the wearer. Each of the front, rear, side and top portions includes at least one zone where the liner assembly includes a plurality of overlapping layers.
Opening claim text (preview).
The invention claimed is: 1. A protective helmet comprising: an outer shell; and a liner assembly received in the outer shell and connected to the outer shell, the liner assembly defining a front portion configured to overlay a front of a head of a wearer, a rear portion configured to overlay a rear of the head of the wearer, a top portion configured to be disposed above a top of the head of the wearer when the helmet is worn, and two opposed side portions each configured to overlay a respective side of the head of the wearer; wherein each of the front, rear, side and top portions includes at least one zone where the liner assembly includes overlapping layers, each of the layers being made from one of first, second, third, and fourth materials; and wherein: the at least one zone of the front portion has a configuration defined by one of a first front zone (F 1 ), a second front zone (F 2 ) and a third front zone (F 3 ), wherein the first front zone (F 1 ), the second front zone (F 2 ) and the third front zone (F 3 ) are respectively composed as follows: Layers from Minimum outer shell Thickness Zone to head (mm) Material First front Layer 1 3.2 Second material zone (F1) Layer 2 4.8 Third material Layer 3 8 Second material Layer 4 6.4 Third material Second front Layer 1 8 Second material zone (F2) Layer 2 16 Third material Layer 3 6.4 Fourth material Third front Layer 1 11.2 Second material zone (F3) Layer 2 6.4 Third material, the at least one zone of the rear portion has a configuration defined by one of a first rear zone (R 1 ) and a second rear zone (R 2 ), wherein the first rear zone (R 1 ) and the second rear zone (R 2 ) are respectively composed as follows: Layers from Minimum outer shell Thickness Zone to head (mm) Material First rear Layer 1 6.4 Second material zone (R1) Layer 2 1.6 First material Layer 3 12.8 Second material Layer 4 3.2 Fourth material Second rear Layer 1 6.4 Second material zone (R2) Layer 2 1.6 First material Layer 3 9.6 Third material Layer 4 6.4 Fourth material, the at least one zone of the side portions has a configuration defined by one of a first side zone (S 1 ) and a second side zone (S 2 ), wherein the first side zone (S 1 ) and the second side zone (S 2 ) are respectively composed as follows: Layers from Minimum outer shell Thickness Zone to head (mm) Material First side Layer 1 4.8 Second material zone (S1) Layer 2 3.2 First material Layer 3 8 Third material
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