Patent ID: 6408545
Filing Date: 2002-06-25
Classification: A43B

Abstract:
A level measuring device installed in a heel of a golf shoe comprising:a transparent box installed inside the heel, a ball of opaque material which rolls freely inside the box according to movement of the shoe; first and second infrared emitting diodes for emitting infrared light from outside of the box to inside of the box wherein ball rolls; front, back, right, and left photosensors which each outputs a signal after receiving infrared light signal from the diodes; a microprocessor which outputs a condition signal indicating the position of the golf shoe according to a signal outputted from the photosensors; a display device which shows the position of the golf shoe according to a signal outputted from the microprocessor; a battery which supplies power to the first and second infrared emitting diodes and the microprocessor.