Patent ID: 8111508

Claim:
A foldable computing device comprising: a base; a lid; and a hinge rotatably connecting the lid to the base, the hinge comprising: a first fixing member fixed to the lid; a second fixing member fixed to the base; a hollow member defining a closed chamber, the chamber having a lateral surface, and a protrusion protruding from the lateral surface; and an axle member comprising a protruding wall received in the closed chamber, a first end and a second end, the first end extending out of the closed chamber and being fixed to the first fixing member, the second end extending out of the closed chamber and being rotatably frictionally connected to the second fixing member, the protruding wall cooperating with the protrusion to divide the closed chamber into a first chamber and a second chamber; wherein, as the protruding wall rotates together with the axle member, the first chamber and the second chamber change in size, air flows between the first chamber and the second chamber until a balanced pressure is achieved.