Patent ID: 6662943
Filing Date: 2003-12-16
Classification: G11B

Abstract:
A disk case, comprising:a top case having a first protrusion defining an inner through hole; and a bottom case pivotally connected to the top case such that a first surface of the bottom case faces a first surface of the top case when the bottom case is pushed toward the top case, the bottom case having an engagement structure located thereon and protruded from the first surface thereof to match the through hole when the bottom case comes into contact with the top case, wherein the engagement structure has a second protrusion, the engagement structure being a hollow cylindrical portion having a top plate, and the second protrusion is disposed around the top plate, the hollow cylindrical portion having a plurality of indentations formed therein; whereby, the top case and the bottom case are fastened together by engaging the second protrusion with the first protrusion.