Protective footwear

An article of protective footwear in the form of a boot protects a foot of a user against effects of a landmine explosion. A composite sole volume between an outer sole and an inner sole incorporates shock wave guide elements of a material having a high acoustic speed, in the form of glass strips wh...

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Bibliographic Details
Main Authors Joynt, Vernon Peregrin, Van Dyk, Jacobus Theodorus
Format Patent
LanguageEnglish
Published 12.05.2009
Online AccessGet full text

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Abstract An article of protective footwear in the form of a boot protects a foot of a user against effects of a landmine explosion. A composite sole volume between an outer sole and an inner sole incorporates shock wave guide elements of a material having a high acoustic speed, in the form of glass strips which extend spatially from the outer sole obliquely laterally outwardly to a side of the sole volume. The strips are surrounded by liquid. Above the strips and below the inner sole, there is provided a barrier of material having a low acoustic speed, e.g. vermiculite. Surrounding the foot, opposed to the sole of the foot, there is provided a fluid having a high acoustic speed, e.g. glycerin to ensure effective transfer of any shock wave component entering the foot, away from the foot.
AbstractList An article of protective footwear in the form of a boot protects a foot of a user against effects of a landmine explosion. A composite sole volume between an outer sole and an inner sole incorporates shock wave guide elements of a material having a high acoustic speed, in the form of glass strips which extend spatially from the outer sole obliquely laterally outwardly to a side of the sole volume. The strips are surrounded by liquid. Above the strips and below the inner sole, there is provided a barrier of material having a low acoustic speed, e.g. vermiculite. Surrounding the foot, opposed to the sole of the foot, there is provided a fluid having a high acoustic speed, e.g. glycerin to ensure effective transfer of any shock wave component entering the foot, away from the foot.
Author Van Dyk, Jacobus Theodorus
Joynt, Vernon Peregrin
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References Kelsey (3636895) 19720100
Lewis et al. (3243898) 19660400
Fujinaka et al. (3318024) 19670500
Krstic (6725572) 20040400
Ringler et al. (4611411) 19860900
Chavet et al. (6751892) 20040600
Barron (3061951) 19621100
(2191384) 19871200
Makris et al. (6006646) 19991200
(WO 01/18479) 20010300
Vaz (6505421) 20030100
Jordan (3516181) 19700600
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