Protective case for mobile device

A protective case for a mobile device, the mobile device including a speaker and a microphone and having front and back surfaces and side surfaces extending between the front and back surfaces, including a top side, a bottom side, a right side, and a left side, the protective case comprising:

• a middle frame configured to engage and substantially surround at least three of the surfaces of the mobile device, the middle frame comprising:
• a body having a front edge and a back edge, wherein the body at least partially encloses an interior volume;
• an aperture through the middle frame;
• a selectively-permeable seal covering the aperture;
• a gasket reinforcing the seal and providing a channel between the seal and a side surface of the mobile device, the gasket including a void extending from the first gasket edge next to the seal to the second gasket edge opposite the first edge and next to the side surface of the mobile device;
• a channel formed along the middle frame extending from the aperture, the channel being positioned adjacent to the void in the gasket and providing a continuous path for airflow to an interior chamber;
• and
• a plurality of inner ribs extending from the body toward the interior volume and configured to suspend or separate the side surfaces of the mobile device from the body, each of the inner ribs having a height, width, and depth;
• wherein the height of each of the inner ribs of the plurality is at least 80 percent of the distance between the front edge and back edge of the body and the width is smaller than the height.

A protective case for a mobile device, the mobile device including a speaker and a microphone and having front and back surfaces and side surfaces extending between the front and back surfaces, including a top side, a bottom side, a right side, and a left side, the protective case comprising:

• a substantially rigid middle frame configured to engage and substantially surround at least three of the surfaces of the mobile device, the middle frame comprising:
• a body having a front edge and a back edge, wherein the body at least partially encloses an interior volume;
• an aperture through the middle frame;
• a selectively-permeable seal covering the aperture;
• a gasket reinforcing the seal and providing a channel between the seal and a side surface of the mobile device, the gasket including a void extending from the first gasket edge next to the seal to the second gasket edge opposite the first edge and next to the side surface of the mobile device;
• a channel formed along the middle frame extending from the aperture, the channel being positioned adjacent to the void in the gasket and providing a continuous path for airflow to an interior chamber;
• and
• a plurality of inner ribs positioned between the front edge and back edge of the body and extending outwardly from the body toward the interior volume and configured to suspend or separate the side surfaces of the mobile device from the body;
• a back panel positioned at the back edge of the middle frame;
• and
• at least two raised sides extending from the back panel toward the interior volume, the raised sides being configured to suspend the mobile device, creating the interior chamber between the back surface of the mobile device and the back panel, one of the raised sides including a recessed portion that does not extend toward the interior volume and positioned where the channel meets the raised side.