US Patent 7308733 Swivel hinge assembly and electronic device having the same

A swivel hinge assembly is provided for use in an electronic device, such as a portable electronic device. The swivel hinge assembly includes a first rotary shaft configured to be rotatable about a substantially vertically extending axis, a base configured to be rotatable in a substantially horizontal plane by the first rotary shaft, and a second rotary shaft, which is installed on the base, at least a portion of which is configured to be rotatable about a substantially horizontally extending axis which intersects with the first rotary shaft. The swivel hinge assembly may further comprise a cover plate configured to cover an opening formed on a top surface of a main body of the electronic device, and in which the base rotates.