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TODAY’S PATENT- PWM HEATING SYSTEM FOR EYE SHIELD

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TODAY’S PATENT- PWM HEATING SYSTEM FOR EYE SHIELD

The Protective helmets was invented by Jack Cornelius on 22nd August 2013 bearing patent number US20130212765A1.

The present invention relates to an eye-shield condensation preventing system comprising an eye shield adapted for protecting a user’s eyes and adapted for defining at least a partially enclosed space between the user’s eyes and the eye shield, a power source, a pulse-width modulator preferably comprised of a microcomputer, switching means, preferably comprised of a MOSFET device, that is responsive to the pulse-width modulator, a preferably indium-tin-oxide (ITO) heating element on the eye shield, and a circuit interconnecting the power source, the pulse-width modulator, the switching means and the heating element for controlling heating of the eye shield. In one embodiment the eye shield is divided into a plurality of heating regions. A current adjustment means, sensors, and optionally user-selectable profiles are employed to allow heating adjustment or automated anti-fog capability and variable condition adaptability of the invention.

The eye-shield condensation preventing system further comprises of a current adjustment means operatively connected to said pulse-width modulator for varying duty cycle of the power source via the pulse-width modulator in turn varying the amount of current delivered to the heating element.

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    Sovanna Dash

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