Abstract: The present invention relates to a separable keyboard and computers having this separable keyboard which can be separated into two parts. This invention is particularly directed towards notebook or lap top computers. An essential feature of this invention is that the user can control the amount and degree to which the two keyboard halves are separated. Additional features include designs that allow the user to sense whether the keyboards are separating or locking into one of several possible discrete positions, and designs that prevent the keyboard halves from swerving or wobbling.

Abstract: Disclosed is a water-proof, gas pervious casing for a battery capable of containing a plurality of battery cells. The casing is made of a gas impervious, water-proof material that completely encapsulates the battery cells. A recessed region in the casing contains perforations, allowing gases to escape. This perforated recessed region is covered and filled with a plurality of layers of gas pervious sheets, one of which is water-proof. In addition to the recessed region, the exterior of the casing of the battery contains an electrical connector terminal which is surrounded with a water-proof seal. When the battery is installed in an electrical appliance, a cavity wall forms a water-proof seal with the battery to prevent moisture from entering the terminal region of the battery. On the exterior of the casing, adjacent to the recessed region, is a series of spacers are mounted which provide channels for exhaust gas to flow when the battery is snugly installed into the battery cavity of an electronic appliance.