Safety helmets

A helmet and safety technology, which is applied in the field of safety helmets with polymer composite sandwich structures, can solve the problems of manufacturing costs, increasing complex processing steps, etc., and achieve the effect of reducing the number of processes

Inactive Publication Date: 2006-08-02
QINETIQ LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are complications associated with this approach from a manufacturing standpoint, since the shell must be structurally supported during the foam formation process from expanded polystyrene (EPS), adding additional complexity. processing steps, and incur additional manufacturing costs

Method used

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Examples

Experimental program
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Embodiment Construction

[0065] figure 1 Indicates the fibre-reinforced first polymer layer. A concave mold (not shown) will have a series of raised and lower relief patterns which will create the surface shape of the first (outer) layer. The key features of this layer are the dome section comprising the top vent recess 1 and the front vent recess 2, this recess also serves as a means of aligning the energy dissipating material in the female mold. There is also a vent hole in the chin bar area 3, the vent holes 1, 2, 3 are designed to ensure that enough air is able to circulate inside the finished helmet. A goggle section (not shown) will be located in the cut-out portion 4 and it will be fixed and hinged at corresponding anchor points 6 on either side of the helmet. A chin strap (not shown) will be fastened at the mounting hole 5, with an identical fastening point on the other side of the helmet. The mounting holes 5, 6 are ground during the finishing stage of the final helmet to ensure correct al...

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Abstract

A low mass safety helmet is provided, containing a sandwich of polymer composite materials to produce an effective means of shock mitigation to a wearer's head. The sandwich comprises an inner and outer layer of fibre reinforced polymer which encapsulates a pre-formed energy dispersive material which is typically a high impact resistant foam. Optionally, on the inside surface of the inner layer which is adjacent to the wearer's head there may also be fitted a comfort liner, manufactured from either a low density impact foam or a material or plastic lattice, to provide comfort to the wearer and protection from low energy impacts. The use of a preformed foam liner in the manufacturing of the helmet allows for accurate dimensional tolerances to be achieved, thus allowing helmets which can meet the requirements for both military and civilian use to be manufactured by mass production techniques.

Description

technical field [0001] The present invention relates to a polymer composite sandwich structure (PCS) safety helmet in which the mass of the safety helmet can be significantly reduced compared to conventional safety helmets without any attendant loss in mechanical strength. Background technique [0002] The conventional protective helmets available in today's market cover a wide range from everyday wear lightweight use helmets such as motorcycle helmets or bicycle helmets to professional use helmets such as those used in racing. Similarly, helmets can cost anywhere from a few pounds for a bicycle helmet to hundreds of thousands of pounds for a Formula 1 helmet. However, a helmet for lightweight use and a helmet for professional use are equally made using the same essentially two-layer scheme. The helmet consists of an inner layer and an outer layer, the inner layer is typically a thick layer of energy absorbing material, typically a layer of foam, which will be placed adjace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A42B3/06A42C2/00B29D99/00B29C70/34B32B27/12
CPCB29C70/345B32B27/12A42C2/00A42B3/06B29L2031/4821B29C35/00B29C35/002B29C70/68B29C70/685B32B2323/10B32B2262/101B32B2262/106B32B2262/0269B32B2375/00B32B2307/56B32B5/245B32B5/18B32B2437/04B32B2266/0228B32B27/32B32B2266/0235B32B27/308B32B27/40B32B2266/0214B32B27/36B32B27/38B32B2363/00B32B2266/025B32B2305/08B32B2367/00B32B2331/00
Inventor S·E·戴A·D·福尔曼A·哈金斯J·A·普赖斯
Owner QINETIQ LTD
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