Patent ID: 7369882

Claim:
A portable apparatus comprising: a main body; a battery cover coupled to a bottom surface of the main body in a predetermined position so that it can rotate about a first hinge axis toward or away from the main body and provided with a folding force, at less than a first angle relative to the bottom surface of the main body, in such a direction that it is folded on the main body, an unfolding force at between the first angle and a second angle, the second angle being greater than the first angle, and a retaining force at the second angle for retaining the main body in an upright position at a slant; a sliding/swing housing positioned on an upper surface of the main body, the sliding/swing housing adapted to slide along a longitudinal direction of the main body while being parallel to and continuously facing the main body and adapted to swing about a second hinge axis, which is spaced from and perpendicular to the first hinge axis and which is perpendicular to the longitudinal direction, while being parallel to and continuously facing the inner surface, the inner surface being opposite to the bottom surface; and a battery pack removably attached to the battery cover.