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    • 49. 发明申请
    • Protective helmets
    • 防护头盔
    • US20130212763A1
    • 2013-08-22
    • US11706719
    • 2007-02-15
    • Ashok BhatnagarLori L. WagnerBrian D. ArvidsonBradley L. Grunden
    • Ashok BhatnagarLori L. WagnerBrian D. ArvidsonBradley L. Grunden
    • F41H1/08
    • F41H1/08A42B3/063A42C2/00
    • A helmet shell formed from two types of high tenacity fibers in multiple layers of fibrous materials. The fibrous materials are in the form of layers of fibrous networks in a resin matrix. There are a plurality of each type of fibrous layers. Preferably the outer set of fibrous layers is formed from aramid fibers and the inner set of fibrous layers is formed from high tenacity polyolefin fibers. There may also be employed a third type of fibrous material as an additional set of fibers and used as the outer layers of the helmet shell. The third type of fibrous layers is formed from glass fibers that are also in a resin matrix. The helmet is lightweight, has excellent ballistic resistant properties and is useful for both military and non-military applications.
    • 由多层纤维材料的两种类型的高韧性纤维形成的头盔外壳。 纤维材料是树脂基质中纤维网层的形式。 存在多种各种纤维层。 优选地,外层纤维层由芳族聚酰胺纤维形成,并且内层的纤维层由高韧性聚烯烃纤维形成。 也可以采用第三种类型的纤维材料作为额外的一组纤维并用作头盔壳的外层。 第三种类型的纤维层由也在树脂基质中的玻璃纤维形成。 头盔重量轻,具有优异的防弹性能,适用于军事和非军事应用。