US Patent 7170034 Pulsed electric shaver

A hair cutting apparatus comprising a structure (126), a portion (1216) of which being adapted for placement against a skin surface where hair is to be cut, a heat generator comprising one or more heat elements (1214) positioned to touch said hair and heated to a temperature sufficient to cut hair, at least one of said heat elements being juxtaposed with said portion and a controller that controls the power source to provide pulsed heating of said one or more heat elements.