Patent ID: 6417491
Filing Date: 2002-07-09
Classification: A42B,H05B

Abstract:
A helmet having defogging capability comprising:a body having an opening opposite a wearer's eyes; at least one transparent panel connected to said body, said panel extending laterally over said opening and having upper and lower end portions, side end portions and a central portion; a transparent electrically conductive film mounted to at least one surface of said transparent panel and extending laterally along said panel; a first electrode mounted to said electrically conductive film by electrically conductive adhesive near said upper end portion of said panel and extending laterally across said panel; a second electrode mounted to said electrically conductive film by electrically conductive adhesive, said second electrode being spaced from said first electrode and extending laterally across said panel; and said transparent electrically conductive film being of greater thickness at said panel central portion than at said panel side end portions, there being a ratio of the thickness of electrically conductive film at said panel central portion to the thickness of electrically conductive film at said panel side end portions of greater than one to one.