Protective helmet with multi-density impact liners and method for same
US-10010127-B1 · Jul 3, 2018 · US
US2018271202A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018271202-A1 |
| Application number | US-201715464947-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 21, 2017 |
| Priority date | Mar 21, 2017 |
| Publication date | Sep 27, 2018 |
| Grant date | — |
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
What the patent document calls the invention.
A short plain-language summary of the technical disclosure.
Who owns or filed the patent and who is credited as inventor.
Filing, priority, publication, and grant dates set the timeline.
The legal scope of protection — read this for what is actually claimed.
Technology tags used to group this patent with similar filings.
Prior art links and similar publications in this corpus.
Official abstract text for this publication.
A protective helmet having a liner assembly received in an outer shell and connected to the outer shell, with front, rear, side and top portions each including at least one zone where the liner assembly includes a plurality of overlapping layers, each of the layers being made from one of first, second, third and fourth materials, where the first material has a greater density and/or hardness than that of the second, third and fourth materials, the second material has a greater density and/or hardness than that of the third and fourth materials, and the third material has a greater density and/or hardness than that of the fourth material, and wherein the liner assembly includes one or more particular zones set forth in Table 3 or 4.
Opening claim text (preview).
1 . A protective helmet comprising: an outer shell; 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 overlay a top of the head of the wearer, 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 a plurality of overlapping layers, each of the layers being made from one of first, second, third and fourth materials, where the first material has a greater density than that of the second, third and fourth materials, the second material has a greater density than that of the third and fourth materials, and the third material has a greater density than that of the fourth material, and: the at least one zone of the front portion includes at least one of the zones F 1 , F 2 and F 3 where the layers are made of the material set forth in Table 4 and have a respective thickness of at least the thickness set forth in Table 4 ; the at least one zone of the rear portion includes at least one of the zones R 1 and R 2 where the layers are made of the material and have a respective thickness of at least the thickness set forth in Table 4; the at least one zone of the side portions include at least one of the zones S 1 and S 2 where the layers are made of the material and have a respective thickness of at least the thickness set forth in Table 4; and the at least one zone of the top portion includes at least one of the zones T 1 and T 2 where the layers are made of the material and have a respective thickness of at least the thickness set forth in Table 4 . 2 . The protective helmet as defined in claim 1 , wherein the front portion includes all of the zones F 1 , F 2 and F 3 set forth in Table 4. 3 . The protective helmet as defined in claim 1 , wherein the rear portion includes the zones R 1 and R 2 set forth in Table 4. 4 . The protective helmet as defined in claim 1 , wherein the side portions include the zones S 1 and S 2 set forth in Table 4. 5 . The protective helmet as defined in claim 1 , wherein the top portion includes the zones T 1 and T 2 set forth in Table 4. 6 . The protective helmet as defined in claim 1 , wherein the respective thickness of each of the layers of the at least one of the zones F 1 , F 2 and F 3 , of the at least one of the zones R 1 and R 2 , of the at least one of the zones S 1 and S 2 and of the at least one of the zones T 1 and T 2 corresponds to at least the thickness forth in Table 3. 7 . The protective helmet as defined in claim 1 , wherein the first material has a greater hardness than that of the second, third and fourth materials, the second material has a greater hardness than that of the third and fourth materials, and the third material has a greater hardness than that of the fourth material. 8 . The protective helmet as defined in claim 1 , wherein the first, second, third and fourth materials correspond to the type of material set forth in Table 2. 9 . The protective helmet as defined in claim 1 , wherein, the density of each of the first, second, third and fourth materials is within the respective density range set forth in Table 2. 10 . The protective helmet as defined in claim 1 , wherein the hardness of each of the first, second, third and fourth materials is within the respective hardness range set forth in Table 2. 11 . A protective helmet comprising: an outer shell; a liner assembly received in the outer shell and connected to the outer shell, the liner assembly having at least one zone where the liner assembly includes a plurality of overlapping layers, each of the layers being made from one of first, second, third and fourth materials, where the first material has a greater density than that of the second, third and fourth materials, the second material has a greater density than that of the third and fourth materials, and the third material has a greater density than that of the fourth material, and wherein the at least one zone includes at least one of the zones F 1 , F 2 , F 3 , R 1 , R 2 , S 1 , S 2 , T 1 and T 2 where the layers are made of the material and have a respective thickness of at least the thickness set forth in Table 4. 12 . The protective helmet as defined in claim 11 , wherein the liner assembly includes all of the zones F 1 , F 2 , F 3 , R 1 , R 2 , S 1 , S 2 , T 1 and T 2 set forth in Table 4. 13 . The protective helmet as defined in claim 11 , wherein the respective thickness of the layers of the at least one of the zones F 1 , F 2 , F 3 , R 1 , R 2 , S 1 , S 2 , T 1 and T 2 is at least the thickness set forth in Table 3. 14 . The protective helmet as defined in claim 11 , wherein the first material has a greater hardness than that of the second, third and fourth materials, the second material has a greater hardness than that of the third and fourth materials, and the third material has a greater hardness than that of the fourth material. 15 . The protective helmet as defined in claim 11 , wherein the first, second, third and fourth materials correspond to the type of material set forth in Table 2. 16 . The protective helmet as defined in claim 11 , wherein, the density of each of the first, second, third and fourth materials is within the respective density range set forth in Table 2. 17 . The protective helmet as defined in claim 11 , wherein the hardness of each of the first, second, third and fourth materials is within the respective hardness range set forth in Table 2. 18 . A protective helmet comprising: an outer shell; 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 overlay a top of the head of the wearer, 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 a plurality of overlapping layers, each of the layers being made from one of first, second, third and fourth materials, where the first material has a greater hardness than that of the second, third and fourth materials, the second material has a greater hardness than that of the third and fourth materials, and the third material has a greater hardness than that of the fourth material, and: the at least one zone of the front portion includes at least one of the zones F 1 , F 2 and F 3 where the layers are made of the material and have a respective thickness of at least the thickness set forth in Table 4; the at least one zone of the rear portion includes at least one of the zones R 1 and R 2 where the layers are made of the material and have a respective thickness of at least the thickness set forth in Table 4; the at least one zone of the side portions include at least one of the zones S 1 and S 2 where the layers are made of the material and have a respective thickness of at least the thickness set forth in Table 4; and the at least one zone of the top portion includes at least one of the zones T 1 and T 2 where the layers are made of the material and have a respective thickness of at least the thickness set fo
Related publications grouped by family.
Answers are generated from the same data shown on this page.