US6012178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antiballistic protective helmet
Assignee: Akzo Nobel NV
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Filing: 1997-10-08
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Granted: 2000-01-11
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Expires: 2017-10-08
Abstract
Abstract A helmet, in particular an antiballistic helmet, containing protective textile fabric layers made from antiballistic fibers including aramide fibers, polyethylene fibers spun by the gel spinning process, glass fibers, metal fibers, or blends thereof. Aramide fibers are preferred. The textile fabric layers arranged on the side away from the wearer are made of multiaxial knitted fabric, and the textile fabric layers on the side toward the wearer are made of woven fabric. The layers of multiaxial knitted fabric preferably comprise 60-80% of all reinforcement layers.
Inventors
- 👤 Dieter H. P. Schuster
- 👤 Achim G. Fels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:06
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/06; A42B3/062; A42B3/063; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/28; F; F41; F41H; F41H1/00; F41H1/04; F41H1/08; F41H5/00; F41H5/02; F41H5/04; F41H5/0471; F41H5/0485
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
37 words
Helmet comprising a plurality of textile fabric layers embedded in a matrix material and joined together via the matrix material, wherein at least one of the textile fabric layers comprise multiaxial knitted fabric comprised of antiballistic fibers.
Claim 2
Dependent Claim
37 words
Helmet comprising a plurality of textile fabric layers embedded in a matrix material and joined together via the matrix material, wherein at least one of the textile fabric layers comprise multiaxial knitted fabric comprised of antiballistic fibers.
Claim 3
Dependent Claim
30 words
Helmet in accordance with claim 1, wherein at least one of the textile fabric layers on a side away from a wearer of the helmet comprise the multiaxial knitted fabric.
Claim 4
Dependent Claim
28 words
Helmet in accordance with claim 1, wherein at least one of the textile fabric layers on a side toward a wearer comprise woven fabric comprised of antiballistic fibers.
Claim 5
Dependent Claim
27 words
Helmet in accordance with claim 1, wherein the at least one textile fabric layers of multiaxial knitted fabric comprise 50-90% by weight of all textile fabric layers.
Claim 6
Dependent Claim
27 words
Helmet in accordance with claim 1, wherein the at least one textile fabric layers of multiaxial knitted fabric comprise 60-80% by weight of all textile fabric layers.
Claim 7
Dependent Claim
28 words
Helmet in accordance with claim 1, wherein the antiballistic fibers are aramide fibers, polyethylene fibers spun by the gel spinning process, glass fibers, metal fibers, or blends thereof.
Claim 8
Dependent Claim
13 words
Helmet in accordance with claim 1, wherein the antiballistic fibers are aramide fibers.
Claim 9
Dependent Claim
14 words
Helmet in accordance with claim 1, wherein the helmet is an antiballistic protective helmet.
Claim 10
Dependent Claim
30 words
Helmet in accordance with claim 1, wherein the matrix material is a phenolic resin, a vinyl ester, an epoxy resin, an acrylic resin, an unsaturated polyester, or an alkyd resin.
Claim 11
Dependent Claim
14 words
Helmet in accordance with claim 1, wherein the matrix material is a phenolic resin.
Claim 12
Dependent Claim
80 words
Helmet comprising a plurality of textile fabric layers embedded in a matrix material and joined together via the matrix material, wherein at least one of the textile fabric layers located on a side of the helmet away from a wearer of the helmet comprise multiaxial knitted fabric comprised of antiballistic fibers and wherein at least one of the textile fabric layers on a side of the helmet toward a wearer of the helmet comprise woven fabric comprised of antiballistic fibers.
Claim 13
Dependent Claim
80 words
Helmet comprising a plurality of textile fabric layers embedded in a matrix material and joined together via the matrix material, wherein at least one of the textile fabric layers located on a side of the helmet away from a wearer of the helmet comprise multiaxial knitted fabric comprised of antiballistic fibers and wherein at least one of the textile fabric layers on a side of the helmet toward a wearer of the helmet comprise woven fabric comprised of antiballistic fibers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-10 | 2003-07-12 | 2004-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-10 | 2007-07-12 | 2008-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-10 | 2011-07-12 | 2012-01-11 | $7700.00 | Window Closed / Lapsed |