Safety footwear
AssigneeSTC Footwear Inc.
InventorMichel Bisson
Life of this patent
Estimating the term…
Abstract
An electrostatic dissipative footwear comprises a conductive insole and a conductive outsole spaced by a non-conductive mid sole. An electronic device extends through the mid sole for connecting the insole and the outsole in electrically conductive relationship. The electronic device includes a resistor for precisely controlling current flow between the insole and the outsole, and an active electrical device, such as a fuse, for protecting the wearer against electrical shocks.
Claims16
A composite sole for use in a safety footwear, comprising an insole and an outsole, said insole and said outsole being at least partly made of electrically-conducting material, an insulator between said insole and said outsole, and an electronic device integrated between said insole and said outsole for dynamically controlling current flow therebetween, said electronic device including a resistor for setting the electrical resistance of an electrically conductive path define by said insole, said outsole and said electronic device;
- and a microfuse for protecting the wearer against electrical shocks, wherein said insulator is molded about said electronic device with said electrical resistance fixedly set in the surrounding insulating material.
A composite sole for use in an electrostatic dissipative footwear, comprising an insole and an outsole spaced by a mid sole, said insole and said outsole being at least partly made of electrically-conducting material, whereas said mid sole is made of a substantially non-conductive material, and an electronic device extending through said mid sole for connecting said insole and said outsole in electrically conductive relationship, said electronic device including a resistor for controlling current flow between said insole and said outsole, wherein said resistor is embedded in said mid sole which acts therefor as an insulator, said resistor being in immediate contact on all sides with the material of said mid sole.
A method of manufacturing an electrostatically dissipating sole for a safety footwear, comprising the steps of:
- providing a conductive insole and a conductive outsole, providing an electronic device in a free space between said insole and said outsole for controlling current flow therebetween, connecting said insole and said outsole in electrically conductive relationship with said electronic device, and structurally joining said insole to said outsole by injecting a substantially non-conductive material in said free space to form a mid sole between said insole and said outsole with said electronic device at least partly embedded in said mid sole.
A composite sole for use in an electrostatic dissipative footwear, comprising an isole and an outsole spaced by a mid sole, said insole and said outsole being at least partly made of electrically-conducting material, whereas said mid sole is made of a substantially non-conductive material, and an electronic device electrically connected to said insole and said outsole for controlling current flow therebetween, said mid sole being molded about said electronic device so that the electronic device is set in said mid sole with the space surrounding the electronic device completely filled with material.
Dependencies are inferred from the claim text.