Patent ID: 6137771
Filing Date: 2000-10-24
Classification: G11B

Abstract:
A cartridge for use in a removable cartridge disk drive, comprising:a top shell;a bottom shell pivotally coupled to said top shell for pivoting said cartridge from a closed position to an open position about a shell pivot axis in response to insertion of said cartridge into the drive, said bottom shell and said top shell forming a drive head opening therebetween corresponding to the cartridge being in the open position, said cartridge having at least one rectilinear side; and,a recording medium, disposed between said top shell and said bottom shell, having a medium rotation axis that is non-parallel to said shell pivot axis each one of the top shell and the bottom shell having a dimension greater than a diameter of the recording medium; anda projection coupled to an inside surface of at least one of said top shell and said bottom shell, at least a portion of said projection having an approximately circular shape, said projection enclosing a perimeter of said medium while said cartridge is in the closed position; wherein said projection has a non-circular portion disposed proximate the drive head opening, said non-circular portion forming at least part of the drive head opening while the cartridge is in an open position.