Patent ID: 7909902

Claim:
An apparatus for venting an electronic device, comprising: an object in an electronic device; and a perforated pattern formed in the object, the perforated pattern comprising a plurality of perforations through which matter is flowable, the plurality of perforations forming an interconnecting web that defines an opening to web area ratio, and a web thickness between perforations, each of the perforations comprising a modified hexagonal shape, the modified hexagonal shape comprising a hexagon having six rounded corners, each of the perforations comprising a major dimension and also a radius for each rounded corner in a perforation, the major dimension extending from the vertex of a first rounded corner to the vertex of the second rounded corner opposite the first rounded corner, wherein the radius of each rounded corner is chosen so the opening to web area ratio of the modified hexagonal shape is greater than the opening to web area ratio of perforations of a standard hexagonal shape, the standard hexagonal shape comprising a hexagonal shape without rounded corners, a major dimension of the standard hexagonal shape comprising a diagonal from a corner of the standard hexagonal shape to an opposite corner of the standard hexagonal shape and matching the major dimension of the modified hexagonal shape, and a web thickness between the standard hexagonal shapes matching the web thickness between the modified hexagonal shapes.