TODAY’S PATENT – PRICK-PREVENTING SHOE
The prick-preventing shoe was invented by Kenji Okayasu and Hideo Okayasu, patented by the USPTO on the 2nd of April, 1991, bearing patent number US5003709A.
The prick-preventing shoe has its prick prevention and flexibility compatible with each other so that it is advantageous to enjoy the spongy step accompanied by the bendability. The workman’s shoe of the prior art has its sole reinforced by a metal plate of steel, stainless steel or the like so that the shoe may be prevented from being pricked by a nail or the like.
The present invention contemplates to eliminate the drawbacks of a general workman’s show and has an object to provide a prick-preventing shoe which is intended to prevent its sole from being pricked and not to deteriorate the springy step accompanied by the bending motions, both by using a sheet of an amorphous metal.