The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2009
Filed:
May. 27, 2003
Vernon Peregrin Joynt, Waterkloof, ZA;
Jacobus Theodorus Van Dyk, Brunia Oord, ZA;
Vernon Peregrin Joynt, Waterkloof, ZA;
Jacobus Theodorus Van Dyk, Brunia Oord, ZA;
CSIR, Pretoria, ZA;
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.