Patent ID: 6276524
Filing Date: 2001-08-21
Classification: G11B

Abstract:
In a case for storing a disc-shaped magnetic recording carrier having upper and lower faces, an outer edge, and an inner edge defining a central circular opening, the case including a floor positioned within a frame, and a plurality of spaced-apart segments connected to the floor to form a cylindrical rim and cooperating with one another to engage the outer edge of the magnetic recording carrier, the improvement comprising:(a) a first cylindrical raised seat positioned on a central location on the floor and adapted for receiving the recording carrier thereon; and(b) a second cylindrical raised seat positioned in a central location on said first cylindrical raised seat and including:(i) a button positioned above the horizontal plane and on an upper face of said second cylindrical raised seat and including a polygonal sidewall having upper and lower edges, and a face having an outer edge connected to said upper edge; and(ii) a plurality of spaced-apart tabs positioned adjacent said polygonal sidewall and movable toward the sidewall in response to radially-directed inward pressure against said tabs, each of the tabs including a vertical face having a wedge-shaped notch thereon biased towards and engaging the inner edge of the opening of the recording carrier in the absence of radially-directed inward pressure against the tab.