PRESSURIZED WATERPROOF CASE FOR ELECTRONIC DEVICE

摘要

The pressurized waterproof case (10) for an electronic device (C) is particularly adapted for the waterproof containment and operation of a touch-screen computer (C) or the like therein at some appreciable water depth. The case (10) may be formed as an enclosure (12) having an open top panel (16) or face covered by a flexible, transparent membrane (28) or the like for the operation of the touch-screen device (C) within the case (10). A pressurizing system is provided for the case (10) to pressurize the case (10) and the electronic device (C) therein to slightly greater than ambient in order to prevent the external water pressure from bearing against the transparent membrane (28) and pressing it against the touch screen, thereby precluding operation of the touch screen device (C) within the case (10). The pressurizing system may be a small gas cartridge (32), or may be provided from an external source. A pressure relief valve (36) is also provided.