Abstract: An improved defogging and deicing shield structure suitable for use as a face shield in combination with a protective helmet or for use in goggles having at least two spaced coextensive lenses. The inner surface of one lens is imprinted with an electrical circuit in a predetermined pattern. The resistance of the circuit being sufficient to generate heat effective to defog or deice the exterior surface of the other lens when the circuit is connected to a direct current power source.

Abstract: Condensed breath vapor is removed from visors on helmets adapted to be used by drivers of open air outdoor vehicles, such as snowmobiles, motorcycles, and all terrain vehicles, by applying electric current to a resistance heater coil on the visor. The heating coil is electrically connected to a connector mounted on the visor. The connector is electrically connected by a helically coiled cable to an assembly mounted on the vehicle dashboard. The assembly includes a female jack for receiving a male jack at the end of the coiled helical cable. The assembly also includes a switch for connecting the jack to a power supply of the vehicle, so that electric energy from the power supply can be coupled selectively to the female jack at two power levels.

Abstract: A helmet device including a helmet body having an open front portion and a shielding mechanism attached to the helmet body so as to substantially shield such front portion of the helmet body. The shielding mechanism includes a see-through member permitting an outside view therethrough and a wiper mechanism for wiping the outer surface of the see-through member. The helmet device eliminates any need for manually wiping away raindrops or the like adhering to the outer surface of the see-through member, even when the helmet device is used in the rain or like conditions.

Abstract: A device for use in a helmet having a shield panel for preventing the shield panel from fogging by electric heating. A transparent electroconductive film is provided inside the shield panel for passing current through the film to generate heat. An assembly including the conductive film is removable from the shield panel for repeated use when the shield panel is to be replaced by a new one due to damage.

Abstract: A protective helmet, e.g. a motorcycle helmet has a chinpiece below its visor which defines an air passage with a member behind this chinpiece, permitting air to flow from an opening in this chinpiece uniformly over the interior of a visor to prevent fogging thereof by moisture.

Abstract: Fogging by the condensation of water vapor on optically transmissive surfaces of optical devices, such as the lens of goggles, is prevented by means of a transparent hydrophylic polymer integrated therewith and disposed in the moisture laden environment. A perfluorosulfonic acid polymer, such as is sold under the trademark Nafion by Du Pont, is used. The polymer is attached to the surface of the lens which faces the wearer of the goggles, as by being laminated to the lens. The polymer provides a transparent regeneratable dessicant, even though it is attached to the non-permeable lens, and removes water before it can condense as droplets to fog the lens. There also may be characteristics of the hydrophylic polymer other than that of a dessicant which is significant in the fog prevention (e.g. contact angle of water droplets on the surface).

Abstract: The invention is concerned with an improved underwater swimming mask or goggles having a lens with an inner surface, a frame mounting the lens in spaced relationship to a swimmer's eyes and a water-excluding face-fitting skirt peripherally extending from the frame. The improvement comprises wiper means mounted for sweeping movement across a viewing area of the lens and in wiping contact with the lens inner surface, and weight means connected to and displaceable with the wiper means for moving same in response to tilting movements of the mask or goggles when worn by the swimmer during swimming. The tilting movements resulting from the swimmer rotating his head from side to side cause the weight means to be displaced by gravity and to thereby move the wiper means therewith so as to dissipate mist or droplets of water collected on the lens inner surface and to clear the viewing area of the lens.